Protector Code

/*
    Protector -- a UCI chess engine

    Copyright (C) 2008 Raimund Heid (Raimund_Heid@yahoo.com)

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.

*/

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#if defined(SMP) && defined(MUTEX)
#include <pthread.h>
#endif

#define T41_INCLUDE
#define T33_INCLUDE
#define  NEW
#define  XX  127

#if !defined(SMP) && !defined(SUN)
#define  lock_t int
#endif

typedef unsigned int INDEX;
typedef unsigned int square;

typedef  int  color;
#define  x_colorWhite    0
#define  x_colorBlack    1
#define  x_colorNeutral  2

typedef  int  piece;
#define  x_pieceNone     0
#define  x_piecePawn     1
#define  x_pieceKnight   2
#define  x_pieceBishop   3
#define  x_pieceRook     4
#define  x_pieceQueen    5
#define  x_pieceKing     6

/*
  Macro that fetches positions of pieces
*/

#define  C_PIECES  3  /* Maximum # of pieces of one color OTB */

#define  SqFindKing(psq)       (psq[C_PIECES*(x_pieceKing-1)])
#define  SqFindOne(psq, pi)    (psq[C_PIECES*(pi-1)])
#define  SqFindFirst(psq, pi)  (psq[C_PIECES*(pi-1)])
#define  SqFindSecond(psq, pi) (psq[C_PIECES*(pi-1)+1])
#define  SqFindThird(psq, pi)  (psq[C_PIECES*(pi-1)+2])

/*
  All defined, now include probing code
*/
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#if !defined (DEBUG) && !defined(NDEBUG)
#define	NDEBUG
#endif
#include <assert.h>

// SMP stuff

#if defined (SMP)
static	lock_t	lockLRU;
#else
#define	LockInit(x)
#define LockCache(x)
#define UnLockCache(x)
#endif

// Declarations

typedef unsigned	char BYTE;
typedef unsigned	long ULONG;
typedef	signed		char tb_t;

#if !defined (COLOR_DECLARED)
typedef	int	color;
#define	x_colorWhite	0
#define	x_colorBlack	1
#define	x_colorNeutral	2
#define COLOR_DECLARED
#endif

#if !defined (PIECES_DECLARED)
typedef	int	piece;
#define	x_pieceNone		0
#define	x_piecePawn		1
#define	x_pieceKnight		2
#define	x_pieceBishop		3
#define	x_pieceRook		4
#define	x_pieceQueen		5
#define	x_pieceKing		6
#define PIECES_DECLARED
#endif

#if !defined (SqFind2)
#define	SqFind2(psq,pi1,sq1,pi2,sq2)	sq1=SqFindFirst(psq,pi1);sq2=SqFindFirst(psq,pi2);
#endif

// Machine and compiler-specific declarations

#if defined (_MSC_VER)

#undef	TB_CDECL
#define	TB_CDECL	__cdecl
#define	TB_FASTCALL	/* __fastcall */ /* FIXME; doesn't work at first glance */
#if _MSC_VER >= 1200
#define	INLINE		__forceinline
#endif

#else

#define	TB_CDECL
#define	TB_FASTCALL

#endif

#if !defined (INLINE)
#define	INLINE	inline
#endif

// Some constants from SJE program

#define pageL 256

/* tablebase byte entry semispan length */

#define tbbe_ssL ((pageL - 4) / 2)

/* tablebase signed byte entry values */

#define bev_broken  (tbbe_ssL + 1)  /* illegal or busted */

#define bev_mi1     tbbe_ssL        /* mate in 1 move */
#define bev_mimin   1               /* mate in 126 moves */

#define bev_draw    0               /* draw */

#define bev_limax   (-1)            /* mated in 125 moves */
#define bev_li0     (-tbbe_ssL)     /* mated in 0 moves */

#define	bev_limaxx	(-tbbe_ssL - 1)	/* mated in 126 moves */
#define	bev_miminx	(-tbbe_ssL - 2)	/* mate in 127 moves */

// Some constants for 16-bit tables

#define L_pageL 65536

/* tablebase short entry semispan length */

#define L_tbbe_ssL ((L_pageL - 4) / 2)

/* tablebase signed short entry values */

#define L_bev_broken  (L_tbbe_ssL + 1)		/* illegal or busted */

#define L_bev_mi1     L_tbbe_ssL			/* mate in 1 move */
#define L_bev_mimin   1						/* mate in 32766 moves */

#define L_bev_draw    0						/* draw */

#define L_bev_limax   (-1)					/* mated in 32765 moves */
#define L_bev_li0     (-L_tbbe_ssL)			/* mated in 0 moves */

#define	L_bev_limaxx	(-L_tbbe_ssL - 1)	/* mated in 32766 moves */
#define	L_bev_miminx	(-L_tbbe_ssL - 2)	/* mate in 32767 moves */

// Convertion from 8-bit to 16-bit score
// UNDONE: Maybe implement via lookup table?

#define	S_to_L(tbt)\
	(\
	 (0 == tbt) ? 0:\
	 (tbt > 0) ? (bev_broken != tbt ? tbt + 32640 : L_bev_broken):\
	 (tbt >= bev_li0) ? tbt - 32640:\
	 (bev_limaxx == tbt) ? -32640:\
	 /*bev_miminx == tbt*/  32640\
	)

// Constants

#define	i8	((INDEX) 8)
#define	i14	((INDEX) 14)
#define	i44	((INDEX) 44)
#define	i46	((INDEX) 46)
#define	i47	((INDEX) 47)
#define	i48	((INDEX) 48)
#define	i58	((INDEX) 58)
#define	i59	((INDEX) 59)
#define	i60	((INDEX) 60)
#define	i61	((INDEX) 61)
#define	i62	((INDEX) 62)
#define	i63	((INDEX) 63)
#define	i64	((INDEX) 64)

#define x_row_1 0
#define x_row_2 1
#define x_row_3 2
#define x_row_4 3
#define x_row_5 4
#define x_row_6 5
#define x_row_7 6
#define x_row_8 7

#define x_column_a 0
#define x_column_b 1
#define x_column_c 2
#define x_column_d 3
#define x_column_e 4
#define x_column_f 5
#define x_column_g 6
#define x_column_h 7

/* reflection macros */

#define reflect_x(sq) ((sq) ^ 0x38)
#define reflect_y(sq) ((sq) ^ 0x07)
#define reflect_xy(sq) rgsqReflectXY[sq]

static const square rgsqReflectXY [] =
{
  0,  8, 16, 24, 32, 40, 48, 56,
  1,  9, 17, 25, 33, 41, 49, 57,
  2, 10, 18, 26, 34, 42, 50, 58,
  3, 11, 19, 27, 35, 43, 51, 59,
  4, 12, 20, 28, 36, 44, 52, 60,
  5, 13, 21, 29, 37, 45, 53, 61,
  6, 14, 22, 30, 38, 46, 54, 62,
  7, 15, 23, 31, 39, 47, 55, 63,
};

static const square rgsqReflectMaskY [] =
{
 0, 0, 0, 0, 7, 7, 7, 7,
 0, 0, 0, 0, 7, 7, 7, 7,
 0, 0, 0, 0, 7, 7, 7, 7,
 0, 0, 0, 0, 7, 7, 7, 7,
 0, 0, 0, 0, 7, 7, 7, 7,
 0, 0, 0, 0, 7, 7, 7, 7,
 0, 0, 0, 0, 7, 7, 7, 7,
 0, 0, 0, 0, 7, 7, 7, 7,
};

static const square rgsqReflectMaskYandX [] =
{
 0, 0, 0, 0, 7, 7, 7, 7,
 0, 0, 0, 0, 7, 7, 7, 7,
 0, 0, 0, 0, 7, 7, 7, 7,
 0, 0, 0, 0, 7, 7, 7, 7,
 0x38, 0x38, 0x38, 0x38, 0x38+7, 0x38+7, 0x38+7, 0x38+7,
 0x38, 0x38, 0x38, 0x38, 0x38+7, 0x38+7, 0x38+7, 0x38+7,
 0x38, 0x38, 0x38, 0x38, 0x38+7, 0x38+7, 0x38+7, 0x38+7,
 0x38, 0x38, 0x38, 0x38, 0x38+7, 0x38+7, 0x38+7, 0x38+7,
};

static const square rgsqReflectInvertMask[] = { 0, 0x38 };

/* useful macros */

#define	TbRow(sq)				((sq) >> 3)
#define	TbColumn(sq)			((sq) & 7)

#if defined (NEW)
#define	PchExt(side) ((x_colorWhite == side) ? ".nbw" : ".nbb")
#else
#define	PchExt(side) ((x_colorWhite == side) ? ".tbw" : ".tbb")
#endif

// Verbose levels

static bool		fPrint = false;		// Print some technical statistics
static bool		fVerbose = false;	// Print additional information

// Malloc that checks for out-of-memory condition

static size_t	cbAllocated;

static void* PvMalloc
	(
	size_t cb
	)
	{
	void	*pv;

	pv = malloc (cb);
	if (NULL == pv)
		{
		printf ("*** Cannot allocate %d bytes of memory\n", cb);
		exit (1);
		}
	cbAllocated += cb;
	return pv;
	}

#if defined (NEW)	// New index schema ----------------------------------------

// 'Invalid' value have to be large, so index
// of invalid position will be very large, too.

#define	INF	4000

// Enumeration: valid positions with 2 kings on board; white king restricted to
// a1-d1-d4 triangle; also, if it's at a1-d4 half-diagonal, then black king
// must be in a1-h1-h8 triangle

static const short rgsTriKings [64 * 64] =
{
 INF, INF,   0,   1,   2,   3,   4,   5, INF, INF,   6,   7,   8,   9,  10,  11,
 INF, INF,  12,  13,  14,  15,  16,  17, INF, INF, INF,  18,  19,  20,  21,  22,
 INF, INF, INF, INF,  23,  24,  25,  26, INF, INF, INF, INF, INF,  27,  28,  29,
 INF, INF, INF, INF, INF, INF,  30,  31, INF, INF, INF, INF, INF, INF, INF,  32,
 INF, INF, INF,  33,  34,  35,  36,  37, INF, INF, INF,  38,  39,  40,  41,  42,
  43,  44,  45,  46,  47,  48,  49,  50,  51,  52,  53,  54,  55,  56,  57,  58,
  59,  60,  61,  62,  63,  64,  65,  66,  67,  68,  69,  70,  71,  72,  73,  74,
  75,  76,  77,  78,  79,  80,  81,  82,  83,  84,  85,  86,  87,  88,  89,  90,
  91, INF, INF, INF,  92,  93,  94,  95,  96, INF, INF, INF,  97,  98,  99, 100,
 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116,
 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132,
 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148,
 149, 150, INF, INF, INF, 151, 152, 153, 154, 155, INF, INF, INF, 156, 157, 158,
 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174,
 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190,
 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, 207, 208, 209, 210, 211, INF, INF, INF, 212, 213, 214, 215, 216,
 INF, INF, INF, 217, 218, 219, 220, 221, INF, INF, INF, 222, 223, 224, 225, 226,
 INF, INF, INF, INF, 227, 228, 229, 230, INF, INF, INF, INF, INF, 231, 232, 233,
 INF, INF, INF, INF, INF, INF, 234, 235, INF, INF, INF, INF, INF, INF, INF, 236,
 237, INF, INF, INF, 238, 239, 240, 241, 242, INF, INF, INF, 243, 244, 245, 246,
 247, INF, INF, INF, 248, 249, 250, 251, 252, 253, 254, 255, 256, 257, 258, 259,
 260, 261, 262, 263, 264, 265, 266, 267, 268, 269, 270, 271, 272, 273, 274, 275,
 276, 277, 278, 279, 280, 281, 282, 283, 284, 285, 286, 287, 288, 289, 290, 291,
 292, 293, INF, INF, INF, 294, 295, 296, 297, 298, INF, INF, INF, 299, 300, 301,
 302, 303, INF, INF, INF, 304, 305, 306, 307, 308, 309, 310, 311, 312, 313, 314,
 315, 316, 317, 318, 319, 320, 321, 322, 323, 324, 325, 326, 327, 328, 329, 330,
 331, 332, 333, 334, 335, 336, 337, 338, 339, 340, 341, 342, 343, 344, 345, 346,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 347, 348, 349, 350, 351, 352, 353, 354, INF, INF, INF, INF, 355, 356, 357, 358,
 INF, INF, INF, INF, 359, 360, 361, 362, INF, INF, INF, INF, 363, 364, 365, 366,
 INF, INF, INF, INF, 367, 368, 369, 370, INF, INF, INF, INF, INF, 371, 372, 373,
 INF, INF, INF, INF, INF, INF, 374, 375, INF, INF, INF, INF, INF, INF, INF, 376,
 377, 378, 379, 380, 381, 382, 383, 384, 385, 386, INF, INF, INF, 387, 388, 389,
 390, 391, INF, INF, INF, 392, 393, 394, 395, 396, INF, INF, INF, 397, 398, 399,
 400, 401, 402, 403, 404, 405, 406, 407, 408, 409, 410, 411, 412, 413, 414, 415,
 416, 417, 418, 419, 420, 421, 422, 423, 424, 425, 426, 427, 428, 429, 430, 431,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 432, 433, 434, 435, 436, 437, 438, 439, INF, 440, 441, 442, 443, 444, 445, 446,
 INF, INF, INF, INF, INF, 447, 448, 449, INF, INF, INF, INF, INF, 450, 451, 452,
 INF, INF, INF, INF, INF, 453, 454, 455, INF, INF, INF, INF, INF, 456, 457, 458,
 INF, INF, INF, INF, INF, INF, 459, 460, INF, INF, INF, INF, INF, INF, INF, 461,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
};

// Enumeration: all valid positions with 2 kings on board when white king
// restricted to left half of the board

static const short rgsHalfKings [64 * 64] =
{
 INF, INF,   0,   1,   2,   3,   4,   5, INF, INF,   6,   7,   8,   9,  10,  11,
  12,  13,  14,  15,  16,  17,  18,  19,  20,  21,  22,  23,  24,  25,  26,  27,
  28,  29,  30,  31,  32,  33,  34,  35,  36,  37,  38,  39,  40,  41,  42,  43,
  44,  45,  46,  47,  48,  49,  50,  51,  52,  53,  54,  55,  56,  57,  58,  59,
 INF, INF, INF,  60,  61,  62,  63,  64, INF, INF, INF,  65,  66,  67,  68,  69,
  70,  71,  72,  73,  74,  75,  76,  77,  78,  79,  80,  81,  82,  83,  84,  85,
  86,  87,  88,  89,  90,  91,  92,  93,  94,  95,  96,  97,  98,  99, 100, 101,
 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117,
 118, INF, INF, INF, 119, 120, 121, 122, 123, INF, INF, INF, 124, 125, 126, 127,
 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143,
 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159,
 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175,
 176, 177, INF, INF, INF, 178, 179, 180, 181, 182, INF, INF, INF, 183, 184, 185,
 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201,
 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217,
 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, 234, 235, 236, 237, 238, 239, INF, INF, 240, 241, 242, 243, 244, 245,
 INF, INF, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255, 256, 257, 258, 259,
 260, 261, 262, 263, 264, 265, 266, 267, 268, 269, 270, 271, 272, 273, 274, 275,
 276, 277, 278, 279, 280, 281, 282, 283, 284, 285, 286, 287, 288, 289, 290, 291,
 INF, INF, INF, 292, 293, 294, 295, 296, INF, INF, INF, 297, 298, 299, 300, 301,
 INF, INF, INF, 302, 303, 304, 305, 306, 307, 308, 309, 310, 311, 312, 313, 314,
 315, 316, 317, 318, 319, 320, 321, 322, 323, 324, 325, 326, 327, 328, 329, 330,
 331, 332, 333, 334, 335, 336, 337, 338, 339, 340, 341, 342, 343, 344, 345, 346,
 347, INF, INF, INF, 348, 349, 350, 351, 352, INF, INF, INF, 353, 354, 355, 356,
 357, INF, INF, INF, 358, 359, 360, 361, 362, 363, 364, 365, 366, 367, 368, 369,
 370, 371, 372, 373, 374, 375, 376, 377, 378, 379, 380, 381, 382, 383, 384, 385,
 386, 387, 388, 389, 390, 391, 392, 393, 394, 395, 396, 397, 398, 399, 400, 401,
 402, 403, INF, INF, INF, 404, 405, 406, 407, 408, INF, INF, INF, 409, 410, 411,
 412, 413, INF, INF, INF, 414, 415, 416, 417, 418, 419, 420, 421, 422, 423, 424,
 425, 426, 427, 428, 429, 430, 431, 432, 433, 434, 435, 436, 437, 438, 439, 440,
 441, 442, 443, 444, 445, 446, 447, 448, 449, 450, 451, 452, 453, 454, 455, 456,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 457, 458, 459, 460, 461, 462, 463, 464, INF, INF, 465, 466, 467, 468, 469, 470,
 INF, INF, 471, 472, 473, 474, 475, 476, INF, INF, 477, 478, 479, 480, 481, 482,
 483, 484, 485, 486, 487, 488, 489, 490, 491, 492, 493, 494, 495, 496, 497, 498,
 499, 500, 501, 502, 503, 504, 505, 506, 507, 508, 509, 510, 511, 512, 513, 514,
 515, 516, 517, 518, 519, 520, 521, 522, INF, INF, INF, 523, 524, 525, 526, 527,
 INF, INF, INF, 528, 529, 530, 531, 532, INF, INF, INF, 533, 534, 535, 536, 537,
 538, 539, 540, 541, 542, 543, 544, 545, 546, 547, 548, 549, 550, 551, 552, 553,
 554, 555, 556, 557, 558, 559, 560, 561, 562, 563, 564, 565, 566, 567, 568, 569,
 570, 571, 572, 573, 574, 575, 576, 577, 578, INF, INF, INF, 579, 580, 581, 582,
 583, INF, INF, INF, 584, 585, 586, 587, 588, INF, INF, INF, 589, 590, 591, 592,
 593, 594, 595, 596, 597, 598, 599, 600, 601, 602, 603, 604, 605, 606, 607, 608,
 609, 610, 611, 612, 613, 614, 615, 616, 617, 618, 619, 620, 621, 622, 623, 624,
 625, 626, 627, 628, 629, 630, 631, 632, 633, 634, INF, INF, INF, 635, 636, 637,
 638, 639, INF, INF, INF, 640, 641, 642, 643, 644, INF, INF, INF, 645, 646, 647,
 648, 649, 650, 651, 652, 653, 654, 655, 656, 657, 658, 659, 660, 661, 662, 663,
 664, 665, 666, 667, 668, 669, 670, 671, 672, 673, 674, 675, 676, 677, 678, 679,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 680, 681, 682, 683, 684, 685, 686, 687, 688, 689, 690, 691, 692, 693, 694, 695,
 INF, INF, 696, 697, 698, 699, 700, 701, INF, INF, 702, 703, 704, 705, 706, 707,
 INF, INF, 708, 709, 710, 711, 712, 713, 714, 715, 716, 717, 718, 719, 720, 721,
 722, 723, 724, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736, 737,
 738, 739, 740, 741, 742, 743, 744, 745, 746, 747, 748, 749, 750, 751, 752, 753,
 INF, INF, INF, 754, 755, 756, 757, 758, INF, INF, INF, 759, 760, 761, 762, 763,
 INF, INF, INF, 764, 765, 766, 767, 768, 769, 770, 771, 772, 773, 774, 775, 776,
 777, 778, 779, 780, 781, 782, 783, 784, 785, 786, 787, 788, 789, 790, 791, 792,
 793, 794, 795, 796, 797, 798, 799, 800, 801, 802, 803, 804, 805, 806, 807, 808,
 809, INF, INF, INF, 810, 811, 812, 813, 814, INF, INF, INF, 815, 816, 817, 818,
 819, INF, INF, INF, 820, 821, 822, 823, 824, 825, 826, 827, 828, 829, 830, 831,
 832, 833, 834, 835, 836, 837, 838, 839, 840, 841, 842, 843, 844, 845, 846, 847,
 848, 849, 850, 851, 852, 853, 854, 855, 856, 857, 858, 859, 860, 861, 862, 863,
 864, 865, INF, INF, INF, 866, 867, 868, 869, 870, INF, INF, INF, 871, 872, 873,
 874, 875, INF, INF, INF, 876, 877, 878, 879, 880, 881, 882, 883, 884, 885, 886,
 887, 888, 889, 890, 891, 892, 893, 894, 895, 896, 897, 898, 899, 900, 901, 902,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 903, 904, 905, 906, 907, 908, 909, 910, 911, 912, 913, 914, 915, 916, 917, 918,
 919, 920, 921, 922, 923, 924, 925, 926, INF, INF, 927, 928, 929, 930, 931, 932,
 INF, INF, 933, 934, 935, 936, 937, 938, INF, INF, 939, 940, 941, 942, 943, 944,
 945, 946, 947, 948, 949, 950, 951, 952, 953, 954, 955, 956, 957, 958, 959, 960,
 961, 962, 963, 964, 965, 966, 967, 968, 969, 970, 971, 972, 973, 974, 975, 976,
 977, 978, 979, 980, 981, 982, 983, 984, INF, INF, INF, 985, 986, 987, 988, 989,
 INF, INF, INF, 990, 991, 992, 993, 994, INF, INF, INF, 995, 996, 997, 998, 999,
1000,1001,1002,1003,1004,1005,1006,1007,1008,1009,1010,1011,1012,1013,1014,1015,
1016,1017,1018,1019,1020,1021,1022,1023,1024,1025,1026,1027,1028,1029,1030,1031,
1032,1033,1034,1035,1036,1037,1038,1039,1040, INF, INF, INF,1041,1042,1043,1044,
1045, INF, INF, INF,1046,1047,1048,1049,1050, INF, INF, INF,1051,1052,1053,1054,
1055,1056,1057,1058,1059,1060,1061,1062,1063,1064,1065,1066,1067,1068,1069,1070,
1071,1072,1073,1074,1075,1076,1077,1078,1079,1080,1081,1082,1083,1084,1085,1086,
1087,1088,1089,1090,1091,1092,1093,1094,1095,1096, INF, INF, INF,1097,1098,1099,
1100,1101, INF, INF, INF,1102,1103,1104,1105,1106, INF, INF, INF,1107,1108,1109,
1110,1111,1112,1113,1114,1115,1116,1117,1118,1119,1120,1121,1122,1123,1124,1125,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
1126,1127,1128,1129,1130,1131,1132,1133,1134,1135,1136,1137,1138,1139,1140,1141,
1142,1143,1144,1145,1146,1147,1148,1149,1150,1151,1152,1153,1154,1155,1156,1157,
 INF, INF,1158,1159,1160,1161,1162,1163, INF, INF,1164,1165,1166,1167,1168,1169,
 INF, INF,1170,1171,1172,1173,1174,1175,1176,1177,1178,1179,1180,1181,1182,1183,
1184,1185,1186,1187,1188,1189,1190,1191,1192,1193,1194,1195,1196,1197,1198,1199,
1200,1201,1202,1203,1204,1205,1206,1207,1208,1209,1210,1211,1212,1213,1214,1215,
 INF, INF, INF,1216,1217,1218,1219,1220, INF, INF, INF,1221,1222,1223,1224,1225,
 INF, INF, INF,1226,1227,1228,1229,1230,1231,1232,1233,1234,1235,1236,1237,1238,
1239,1240,1241,1242,1243,1244,1245,1246,1247,1248,1249,1250,1251,1252,1253,1254,
1255,1256,1257,1258,1259,1260,1261,1262,1263,1264,1265,1266,1267,1268,1269,1270,
1271, INF, INF, INF,1272,1273,1274,1275,1276, INF, INF, INF,1277,1278,1279,1280,
1281, INF, INF, INF,1282,1283,1284,1285,1286,1287,1288,1289,1290,1291,1292,1293,
1294,1295,1296,1297,1298,1299,1300,1301,1302,1303,1304,1305,1306,1307,1308,1309,
1310,1311,1312,1313,1314,1315,1316,1317,1318,1319,1320,1321,1322,1323,1324,1325,
1326,1327, INF, INF, INF,1328,1329,1330,1331,1332, INF, INF, INF,1333,1334,1335,
1336,1337, INF, INF, INF,1338,1339,1340,1341,1342,1343,1344,1345,1346,1347,1348,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
1349,1350,1351,1352,1353,1354,1355,1356,1357,1358,1359,1360,1361,1362,1363,1364,
1365,1366,1367,1368,1369,1370,1371,1372,1373,1374,1375,1376,1377,1378,1379,1380,
1381,1382,1383,1384,1385,1386,1387,1388, INF, INF,1389,1390,1391,1392,1393,1394,
 INF, INF,1395,1396,1397,1398,1399,1400, INF, INF,1401,1402,1403,1404,1405,1406,
1407,1408,1409,1410,1411,1412,1413,1414,1415,1416,1417,1418,1419,1420,1421,1422,
1423,1424,1425,1426,1427,1428,1429,1430,1431,1432,1433,1434,1435,1436,1437,1438,
1439,1440,1441,1442,1443,1444,1445,1446, INF, INF, INF,1447,1448,1449,1450,1451,
 INF, INF, INF,1452,1453,1454,1455,1456, INF, INF, INF,1457,1458,1459,1460,1461,
1462,1463,1464,1465,1466,1467,1468,1469,1470,1471,1472,1473,1474,1475,1476,1477,
1478,1479,1480,1481,1482,1483,1484,1485,1486,1487,1488,1489,1490,1491,1492,1493,
1494,1495,1496,1497,1498,1499,1500,1501,1502, INF, INF, INF,1503,1504,1505,1506,
1507, INF, INF, INF,1508,1509,1510,1511,1512, INF, INF, INF,1513,1514,1515,1516,
1517,1518,1519,1520,1521,1522,1523,1524,1525,1526,1527,1528,1529,1530,1531,1532,
1533,1534,1535,1536,1537,1538,1539,1540,1541,1542,1543,1544,1545,1546,1547,1548,
1549,1550,1551,1552,1553,1554,1555,1556,1557,1558, INF, INF, INF,1559,1560,1561,
1562,1563, INF, INF, INF,1564,1565,1566,1567,1568, INF, INF, INF,1569,1570,1571,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
1572,1573,1574,1575,1576,1577,1578,1579,1580,1581,1582,1583,1584,1585,1586,1587,
1588,1589,1590,1591,1592,1593,1594,1595,1596,1597,1598,1599,1600,1601,1602,1603,
1604,1605,1606,1607,1608,1609,1610,1611,1612,1613,1614,1615,1616,1617,1618,1619,
 INF, INF,1620,1621,1622,1623,1624,1625, INF, INF,1626,1627,1628,1629,1630,1631,
1632,1633,1634,1635,1636,1637,1638,1639,1640,1641,1642,1643,1644,1645,1646,1647,
1648,1649,1650,1651,1652,1653,1654,1655,1656,1657,1658,1659,1660,1661,1662,1663,
1664,1665,1666,1667,1668,1669,1670,1671,1672,1673,1674,1675,1676,1677,1678,1679,
 INF, INF, INF,1680,1681,1682,1683,1684, INF, INF, INF,1685,1686,1687,1688,1689,
1690,1691,1692,1693,1694,1695,1696,1697,1698,1699,1700,1701,1702,1703,1704,1705,
1706,1707,1708,1709,1710,1711,1712,1713,1714,1715,1716,1717,1718,1719,1720,1721,
1722,1723,1724,1725,1726,1727,1728,1729,1730,1731,1732,1733,1734,1735,1736,1737,
1738, INF, INF, INF,1739,1740,1741,1742,1743, INF, INF, INF,1744,1745,1746,1747,
1748,1749,1750,1751,1752,1753,1754,1755,1756,1757,1758,1759,1760,1761,1762,1763,
1764,1765,1766,1767,1768,1769,1770,1771,1772,1773,1774,1775,1776,1777,1778,1779,
1780,1781,1782,1783,1784,1785,1786,1787,1788,1789,1790,1791,1792,1793,1794,1795,
1796,1797, INF, INF, INF,1798,1799,1800,1801,1802, INF, INF, INF,1803,1804,1805,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
 INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF, INF,
};

// Useful macro and enumeration tables

#define	IndTriKings(sqk1,sqk2)	((INDEX) rgsTriKings[sqk1*64+sqk2])
#define	IndHalfKings(sqk1,sqk2)	((INDEX) rgsHalfKings[sqk1*64+sqk2])

static const bool rgfTriangle[64] =
{
	 true,  true,  true,  true,  false, false, false, false,
	 false, true,  true,  true,  false, false, false, false,
	 false, false, true,  true,  false, false, false, false,
	 false, false, false, true,  false, false, false, false,
	 false, false, false, false, false, false, false, false,
	 false, false, false, false, false, false, false, false,
	 false, false, false, false, false, false, false, false,
	 false, false, false, false, false, false, false, false,
};

static const bool rgfNotDiagonal[64] =
{
	 false, true,  true,  true,  true,  true,  true,  true,
	 true,  false, true,  true,  true,  true,  true,  true,
	 true,  true,  false, true,  true,  true,  true,  true,
	 true,  true,  true,  false, true,  true,  true,  true,
	 true,  true,  true,  true,  false, true,  true,  true,
	 true,  true,  true,  true,  true,  false, true,  true,
	 true,  true,  true,  true,  true,  true,  false, true,
	 true,  true,  true,  true,  true,  true,  true,  false,
};

static const bool rgfInLargeTriangle[64] =
{
	 true,  true,  true,  true,  true,  true,  true,  true,
	 false, true,  true,  true,  true,  true,  true,  true,
	 false, false, true,  true,  true,  true,  true,  true,
	 false, false, false, true,  true,  true,  true,  true,
	 false, false, false, false, true,  true,  true,  true,
	 false, false, false, false, false, true,  true,  true,
	 false, false, false, false, false, false, true,  true,
	 false, false, false, false, false, false, false, true,
};

#define	FInTriangle(sqwk,sqbk)	(rgfTriangle[sqwk] & (rgfNotDiagonal[sqwk]|rgfInLargeTriangle[sqbk]))

// Sort pieces

#define	SORT(sq1,sq2)	if (sq1>sq2) { square sqTmp; sqTmp=sq1; sq1=sq2; sq2=sqTmp; }

// Exclude occupied squares

#define	EXCLUDE1(sq,sq1)						(sq-(sq>sq1))
#define	EXCLUDE2(sq,sq1,sq2)					(sq-((sq>sq1)+(sq>sq2)))
#define	EXCLUDE3(sq,sq1,sq2,sq3)				(sq-((sq>sq1)+(sq>sq2)+(sq>sq3)))
#define	EXCLUDE4(sq,sq1,sq2,sq3,sq4)			(sq-((sq>sq1)+(sq>sq2)+(sq>sq3)+(sq>sq4)))
#define	EXCLUDE5(sq,sq1,sq2,sq3,sq4,sq5)		(sq-((sq>sq1)+(sq>sq2)+(sq>sq3)+(sq>sq4)+(sq>sq5)))
#define	EXCLUDE6(sq,sq1,sq2,sq3,sq4,sq5,sq6)	(sq-((sq>sq1)+(sq>sq2)+(sq>sq3)+(sq>sq4)+(sq>sq5)+(sq>sq6)))

// Calculate index - a lot of functions...

// Enumeration tables

static BYTE		*rgprgsqPiece[6];	// Enumeration for each piece (0 - black pawn)
									// For each position of the King, all legal squares
									// of the opposite piece enumerated
static BYTE		rgcLegal[6][64];	// # of enumerated positions for each piece and each
									// location of enemy king

// Enumerations - indexed by [piece] and [kings enumeration].
// In each table for each [piece] and [king enumeration] we store # of preceeding positions.

static ULONG	*rgprgulSinglePawnless[6];
static ULONG	*rgprgulPairPawnless[6][6];
#if defined (T41_INCLUDE)
static ULONG	*rgprgulTriplePawnless[6][6][6];
#endif
static ULONG	*rgprgulSinglePawnPresent[6];
static ULONG	*rgprgulPairPawnPresent[6][6];
#if defined (T41_INCLUDE)
static ULONG	*rgprgulTriplePawnPresent[6][6][6];
#endif

// Total # of enumerated positions

static ULONG	rgcSinglePawnPresent[6];
static ULONG	rgcSinglePawnless[6];
static ULONG	rgcPairPawnPresent[6][6];
static ULONG	rgcPairPawnless[6][6];
#if defined (T41_INCLUDE)
static ULONG	rgcTriplePawnPresent[6][6][6];
static ULONG	rgcTriplePawnless[6][6][6];
#endif

// Infinities. Have to be larger than any legal enumeration yet small enough
// so there will be no overflow when combining them with remaining pieces.

#define	INF_SINGLE	(110000)
#define	INF_PAIR	(6500000)
#define	INF_TRIPLE	(300000000)

// Initialize squares and counters table for one piece.
// Piece can be x_pieceNone - that means 'pawn of the wrong color', e.g. KPK BTM.

static void VInitSquaresTable
	(
	piece	pi,
	BYTE	*prgsqPiece,
	BYTE	*prgcLegal
	)
	{
	int	sqLo, sqHi;

	memset (prgsqPiece, -1, 64*64);
	sqLo = 0;
	sqHi = 64;
	if (pi <= x_piecePawn)
		{
		sqLo = 8;
		sqHi = 56;
		}
	for (int sqKing = 0; sqKing < 64; sqKing ++)
		{
		int	iPiece;

		iPiece = 0;
		for (int sq = sqLo; sq < sqHi; sq ++)
			{
			if (sq == sqKing)
				continue;
			switch (pi)
				{
			case x_piecePawn:
				if (
					0 != TbColumn (sq) && sqKing == sq+7 ||
					7 != TbColumn (sq) && sqKing == sq+9
				   )
				   continue;
				break;
			case x_pieceKnight:
				if (
					TbRow (sq) >= 2 && TbColumn (sq) >= 1 && sqKing == sq-17 ||
					TbRow (sq) >= 2 && TbColumn (sq) <= 6 && sqKing == sq-15 ||
					TbRow (sq) >= 1 && TbColumn (sq) >= 2 && sqKing == sq-10 ||
					TbRow (sq) >= 1 && TbColumn (sq) <= 5 && sqKing == sq-6 ||
					TbRow (sq) <= 6 && TbColumn (sq) >= 2 && sqKing == sq+6 ||
					TbRow (sq) <= 6 && TbColumn (sq) <= 5 && sqKing == sq+10 ||
					TbRow (sq) <= 5 && TbColumn (sq) >= 1 && sqKing == sq+15 ||
					TbRow (sq) <= 5 && TbColumn (sq) <= 6 && sqKing == sq+17
				   )
					continue;
				break;
			case x_pieceBishop:
				if (
					0 != TbRow (sq) && 0 != TbColumn (sq) && sqKing == sq-9 ||
					0 != TbRow (sq) && 7 != TbColumn (sq) && sqKing == sq-7 ||
					7 != TbRow (sq) && 0 != TbColumn (sq) && sqKing == sq+7 ||
					7 != TbRow (sq) && 7 != TbColumn (sq) && sqKing == sq+9
				   )
					continue;
				break;
			case x_pieceRook:
				if (
					0 != TbColumn (sq) && sqKing == sq-1 ||
					7 != TbColumn (sq) && sqKing == sq+1 ||
					0 != TbRow (sq) && sqKing == sq-8 ||
					7 != TbRow (sq) && sqKing == sq+8
				   )
					continue;
				break;
			case x_pieceQueen:
				if (
					0 != TbColumn (sq) && sqKing == sq-1 ||
					7 != TbColumn (sq) && sqKing == sq+1 ||
					0 != TbRow (sq) && sqKing == sq-8 ||
					7 != TbRow (sq) && sqKing == sq+8 ||
					0 != TbRow (sq) && 0 != TbColumn (sq) && sqKing == sq-9 ||
					0 != TbRow (sq) && 7 != TbColumn (sq) && sqKing == sq-7 ||
					7 != TbRow (sq) && 0 != TbColumn (sq) && sqKing == sq+7 ||
					7 != TbRow (sq) && 7 != TbColumn (sq) && sqKing == sq+9
				   )
					continue;
				break;
				}
			prgsqPiece[sqKing*64+sq] = (BYTE) iPiece;
			iPiece ++;
			}
		prgcLegal[sqKing] = (BYTE) iPiece;
		}
	}

// Initialize enumeration table for single piece

static void VInitSingle
	(
	ULONG		*prgIndex,
	const short	*prgsKings,
	const BYTE	*prgcLegal,
	const BYTE	*prgsqPiece,
	ULONG		*pcEnumeration
	)
	{
	ULONG iIndex;

	iIndex = 0;
	for (int sqKing1 = 0; sqKing1 < 64; sqKing1 ++)
		for (int sqKing2 = 0; sqKing2 < 64; sqKing2 ++)
			{
			if (INF != prgsKings[sqKing1*64+sqKing2])
				{
				prgIndex[prgsKings[sqKing1*64+sqKing2]] = iIndex;
				iIndex += prgcLegal[sqKing2] - ((BYTE) -1 != prgsqPiece[sqKing2*64+sqKing1]);
				}
			}
	*pcEnumeration = iIndex;
	}

// Initialize enumeration table for pair of pieces

static void VInitPair
	(
	ULONG		*prgIndex,
	const short	*prgsKings,
	const BYTE	*prgcLegal1,
	const BYTE	*prgsqPiece1,
	const BYTE	*prgcLegal2,
	const BYTE	*prgsqPiece2,
	ULONG		*pcEnumeration
	)
	{
	ULONG iIndex;
	ULONG cPositions1, cPositions2;

	iIndex = 0;
	for (int sqKing1 = 0; sqKing1 < 64; sqKing1 ++)
		for (int sqKing2 = 0; sqKing2 < 64; sqKing2 ++)
			{
			if (INF != prgsKings[sqKing1*64+sqKing2])
				{
				prgIndex[prgsKings[sqKing1*64+sqKing2]] = iIndex;
				cPositions1 = prgcLegal1[sqKing2] - ((BYTE) -1 != prgsqPiece1[sqKing2*64+sqKing1]);
				if (prgcLegal1 == prgcLegal2)
					iIndex += cPositions1*(cPositions1-1)/2;
				else
					{
					cPositions2 = prgcLegal2[sqKing2] - ((BYTE) -1 != prgsqPiece2[sqKing2*64+sqKing1]);
					iIndex += cPositions1*cPositions2;
					}
				}
			}
	*pcEnumeration = iIndex;
	}

#if defined (T41_INCLUDE)

// Initialize enumeration table for triple piece

static void VInitTriple
	(
	ULONG		*prgIndex,
	const short	*prgsKings,
	const BYTE	*prgcLegal1,
	const BYTE	*prgsqPiece1,
	const BYTE	*prgcLegal2,
	const BYTE	*prgsqPiece2,
	const BYTE	*prgcLegal3,
	const BYTE	*prgsqPiece3,
	ULONG		*pcEnumeration
	)
	{
	ULONG iIndex;
	ULONG cPositions1, cPositions2, cPositions3;

	iIndex = 0;
	for (int sqKing1 = 0; sqKing1 < 64; sqKing1 ++)
		for (int sqKing2 = 0; sqKing2 < 64; sqKing2 ++)
			{
			if (INF != prgsKings[sqKing1*64+sqKing2])
				{
				prgIndex[prgsKings[sqKing1*64+sqKing2]] = iIndex;
				cPositions1 = prgcLegal1[sqKing2] - ((BYTE) -1 != prgsqPiece1[sqKing2*64+sqKing1]);
				if (prgcLegal1 == prgcLegal2 && prgcLegal2 == prgcLegal3)
					iIndex += cPositions1*(cPositions1-1)*(cPositions1-2)/6;
				else if (prgcLegal1 == prgcLegal2)
					{
					cPositions3 = prgcLegal3[sqKing2] - ((BYTE) -1 != prgsqPiece3[sqKing2*64+sqKing1]);
					iIndex += cPositions1*(cPositions1-1)/2*cPositions3;
					}
				else if (prgcLegal2 == prgcLegal3)
					{
					cPositions2 = prgcLegal2[sqKing2] - ((BYTE) -1 != prgsqPiece2[sqKing2*64+sqKing1]);
					iIndex += cPositions1*cPositions2*(cPositions2-1)/2;
					}
				else
					{
					cPositions2 = prgcLegal2[sqKing2] - ((BYTE) -1 != prgsqPiece2[sqKing2*64+sqKing1]);
					cPositions3 = prgcLegal3[sqKing2] - ((BYTE) -1 != prgsqPiece3[sqKing2*64+sqKing1]);
					iIndex += cPositions1*cPositions2*cPositions3;
					}
				}
			}
	*pcEnumeration = iIndex;
	}

#endif

// Initialize all Enumeration tables

static bool fEnumerationInitted = false;

static void VInitEnumerations (void)
	{
	piece	pi1;
	piece	pi2;
#if defined (T41_INCLUDE)
	piece	pi3;
#endif

	if (fEnumerationInitted)
		return;
	fEnumerationInitted = true;
	// Initialize square tables
	for (pi1 = x_pieceNone; pi1 <= x_pieceQueen; pi1 = (piece) (pi1 + 1))
		{
		rgprgsqPiece[pi1] = (BYTE *) PvMalloc (64*64);
		VInitSquaresTable (pi1, rgprgsqPiece[pi1], rgcLegal[pi1]);
		}

	for (pi1 = x_pieceNone; pi1 <= x_pieceQueen; pi1 = (piece) (pi1 + 1))
		{
		// Initialize enumeration tables for single piece
		rgprgulSinglePawnPresent[pi1] = (ULONG *) PvMalloc (1806*sizeof (ULONG));
		VInitSingle (rgprgulSinglePawnPresent[pi1], rgsHalfKings,
					 rgcLegal[pi1], rgprgsqPiece[pi1], &rgcSinglePawnPresent[pi1]);
		if (pi1 > x_piecePawn)
			{
			rgprgulSinglePawnless[pi1] = (ULONG *) PvMalloc (462*sizeof (ULONG));
			VInitSingle (rgprgulSinglePawnless[pi1], rgsTriKings,
						 rgcLegal[pi1], rgprgsqPiece[pi1], &rgcSinglePawnless[pi1]);
			}
		// Initialize enumeration tables for pair of pieces
		for (pi2 = (x_pieceNone == pi1 ? x_pieceNone : x_piecePawn); pi2 <= pi1; pi2 = (piece) (pi2 + 1))
			{
			rgprgulPairPawnPresent[pi1][pi2] = (ULONG *) PvMalloc (1806*sizeof (ULONG));
			VInitPair (rgprgulPairPawnPresent[pi1][pi2], rgsHalfKings,
					   rgcLegal[pi1], rgprgsqPiece[pi1], rgcLegal[pi2], rgprgsqPiece[pi2],
					   &rgcPairPawnPresent[pi1][pi2]);
			if (pi1 > x_piecePawn && pi2 > x_piecePawn)
				{
				rgprgulPairPawnless[pi1][pi2] = (ULONG *) PvMalloc (462*sizeof (ULONG));
				VInitPair (rgprgulPairPawnless[pi1][pi2], rgsTriKings,
						   rgcLegal[pi1], rgprgsqPiece[pi1], rgcLegal[pi2], rgprgsqPiece[pi2],
						   &rgcPairPawnless[pi1][pi2]);
				}
#if defined (T41_INCLUDE)
			// Initialize enumeration tables for three pieces
			for (pi3 = (x_pieceNone == pi1 ? x_pieceNone : x_piecePawn); pi3 <= pi2; pi3 = (piece) (pi3 + 1))
				{
				if (pi1 <= x_piecePawn || pi2 <= x_piecePawn || pi3 <= x_piecePawn)
					{
					rgprgulTriplePawnPresent[pi1][pi2][pi3] = (ULONG *) PvMalloc (1806*sizeof (ULONG));
					VInitTriple (rgprgulTriplePawnPresent[pi1][pi2][pi3], rgsHalfKings,
								 rgcLegal[pi1], rgprgsqPiece[pi1],
								 rgcLegal[pi2], rgprgsqPiece[pi2],
								 rgcLegal[pi3], rgprgsqPiece[pi3],
								 &rgcTriplePawnPresent[pi1][pi2][pi3]);
					}
				else
					{
					rgprgulTriplePawnless[pi1][pi2][pi3] = (ULONG *) PvMalloc (462*sizeof (ULONG));
					VInitTriple (rgprgulTriplePawnless[pi1][pi2][pi3], rgsTriKings,
						rgcLegal[pi1], rgprgsqPiece[pi1],
						rgcLegal[pi2], rgprgsqPiece[pi2],
						rgcLegal[pi3], rgprgsqPiece[pi3],
						&rgcTriplePawnless[pi1][pi2][pi3]);
					}
				}
#endif
			}
		}

	// All done!
	if (fPrint)
		{
		for (pi1 = x_pieceNone; pi1 <= x_pieceQueen; pi1 = (piece) (pi1 + 1))
			printf ("%c - %ld enumerated positions\n", "pPNBRQ"[pi1], rgcSinglePawnPresent[pi1]);
		for (pi1 = x_pieceNone; pi1 <= x_pieceQueen; pi1 = (piece) (pi1 + 1))
			{
			if (0 != rgcSinglePawnless[pi1])
				printf ("pawnless %c - %ld enumerated positions\n", "pPNBRQ"[pi1], rgcSinglePawnless[pi1]);
			}
		for (pi1 = x_pieceNone; pi1 <= x_pieceQueen; pi1 = (piece) (pi1 + 1))
			for (pi2 = x_pieceNone; pi2 <= pi1; pi2 = (piece) (pi2 + 1))
				{
				if (0 != rgcPairPawnPresent[pi1][pi2])
					printf ("%c%c - %ld enumerated positions\n", "pPNBRQ"[pi1], "pPNBRQ"[pi2],
							rgcPairPawnPresent[pi1][pi2]);
				}
		for (pi1 = x_pieceNone; pi1 <= x_pieceQueen; pi1 = (piece) (pi1 + 1))
			for (pi2 = x_pieceNone; pi2 <= pi1; pi2 = (piece) (pi2 + 1))
				{
				if (0 != rgcPairPawnless[pi1][pi2])
					printf ("pawnless %c%c - %ld enumerated positions\n", "pPNBRQ"[pi1], "pPNBRQ"[pi2],
							rgcPairPawnless[pi1][pi2]);
				}
#if defined (T41_INCLUDE)
		for (pi1 = x_pieceNone; pi1 <= x_pieceQueen; pi1 = (piece) (pi1 + 1))
			for (pi2 = x_pieceNone; pi2 <= pi1; pi2 = (piece) (pi2 + 1))
				for (pi3 = x_pieceNone; pi3 <= pi2; pi3 = (piece) (pi3 + 1))
					{
					if (0 != rgcTriplePawnPresent[pi1][pi2][pi3])
						printf ("%c%c%c - %ld enumerated positions\n",
								"pPNBRQ"[pi1], "pPNBRQ"[pi2], "pPNBRQ"[pi3],
								rgcTriplePawnPresent[pi1][pi2][pi3]);
					}
		for (pi1 = x_pieceNone; pi1 <= x_pieceQueen; pi1 = (piece) (pi1 + 1))
			for (pi2 = x_pieceNone; pi2 <= pi1; pi2 = (piece) (pi2 + 1))
				for (pi3 = x_pieceNone; pi3 <= pi2; pi3 = (piece) (pi3 + 1))
					{
					if (0 != rgcTriplePawnless[pi1][pi2][pi3])
						printf ("pawnless %c%c%c - %ld enumerated positions\n",
								"pPNBRQ"[pi1], "pPNBRQ"[pi2], "pPNBRQ"[pi3],
								rgcTriplePawnless[pi1][pi2][pi3]);
					}
#endif
		printf ("\nAllocated %dk\n\n", (cbAllocated + 1023)/1024);
		}
	}

// Return enumeration of 2 kings and single piece

template <int piw1, bool fPawns, bool fInvert> class TEnumerate1
	{
public:
	static INLINE INDEX TB_FASTCALL Index
		(
		square	sqwk,
		square	sqw1,
		square	sqbk
		)
		{
		INDEX	ind;
		ULONG	ulKings;

		// For black pawn invert the board
		if (piw1 <= x_piecePawn && fInvert)
			{
			sqwk = reflect_x(sqwk);
			sqw1 = reflect_x(sqw1);
			sqbk = reflect_x(sqbk);
			}
		
		// Get enumerated square
		ind = rgprgsqPiece[piw1][sqbk*64+sqw1];
#if defined (ILLEGAL_POSSIBLE)
		if ((BYTE) -1 == ind)
			return INF_SINGLE;
#endif
		// Get enumerated position of both kings
		if (fPawns)
			ulKings = rgsHalfKings[sqwk*64+sqbk];	// 0..1805
		else
			ulKings = rgsTriKings[sqwk*64+sqbk];	// 0..461
#if defined (ILLEGAL_POSSIBLE)
		if (INF == ulKings)
			return INF_SINGLE;
#endif
		// Can we remove one extra square?
		if ((piw1>x_pieceKnight) || ((BYTE)-1 != rgprgsqPiece[piw1][sqbk*64+sqwk]))
			ind -= (sqw1 > sqwk);
		// Add enumerated square to the # of the preceeding positions
		return ind + (fPawns ? rgprgulSinglePawnPresent[piw1][ulKings] : rgprgulSinglePawnless[piw1][ulKings]);
		}
	};

// Return enumeration of 2 kings and 2 pieces

template <int piw1, int piw2, bool fPawns, bool fInvert> class TEnumerate2
	{
public:
	static INLINE INDEX TB_FASTCALL Index
		(
		square	sqwk,
		square	sqw1,
		square	sqw2,
		square	sqbk
		)
		{
		INDEX	ind1, ind2, cInd2;
		ULONG	ulKings;

		// For black pawn invert the board
		if (piw2 <= x_piecePawn && fInvert)
			{
			sqwk = reflect_x(sqwk);
			sqw1 = reflect_x(sqw1);
			sqw2 = reflect_x(sqw2);
			sqbk = reflect_x(sqbk);
			}
		
		// Get enumerated squares for both pieces
		if (piw1 == piw2)
			SORT (sqw1, sqw2);
		ind1 = rgprgsqPiece[piw1][sqbk*64+sqw1];
		ind2 = rgprgsqPiece[piw2][sqbk*64+sqw2];
#if defined (ILLEGAL_POSSIBLE)
		if ((BYTE) -1 == ind1 || (BYTE) -1 == ind2)
			return INF_PAIR;
#endif
		// Get enumerated position of both kings
		if (fPawns)
			ulKings = rgsHalfKings[sqwk*64+sqbk];	// 0..1805
		else
			ulKings = rgsTriKings[sqwk*64+sqbk];	// 0..461
#if defined (ILLEGAL_POSSIBLE)
		if (INF == ulKings)
			return INF_PAIR;
#endif
		if (piw1 == piw2)
			{
			// Can we remove one extra square?
			if ((piw1>x_pieceKnight) || ((BYTE)-1 != rgprgsqPiece[piw1][sqbk*64+sqwk]))
				{
				ind1 -= (sqw1 > sqwk);
				ind2 -= (sqw2 > sqwk);
				}
			// Add enumerated squares to the # of the preceeding positions
			return	ind2*(ind2-1)/2 + ind1 +
					(fPawns ? rgprgulPairPawnPresent[piw1][piw2][ulKings] : rgprgulPairPawnless[piw1][piw2][ulKings]);
			}
		else
			{
			// Can we remove WK square from 1st piece Enumeration?
			if ((piw1>x_pieceKnight) || ((BYTE)-1 != rgprgsqPiece[piw1][sqbk*64+sqwk]))
				ind1 -= (sqw1 > sqwk);
			// Get # of enumerated positions of 2nd piece
			cInd2 = rgcLegal[piw2][sqbk];
			// Can we remove WK square from 2nd piece Enumeration?
			if ((piw2>x_pieceKnight) || ((BYTE)-1 != rgprgsqPiece[piw2][sqbk*64+sqwk]))
				{
				cInd2 --;
				ind2 -= (sqw2 > sqwk);
				}
			// Add enumerated square to the # of the preceeding positions
			return cInd2*ind1 + ind2 + (fPawns ? rgprgulPairPawnPresent[piw1][piw2][ulKings] : rgprgulPairPawnless[piw1][piw2][ulKings]);
			}
		}
	};

#if defined (T41_INCLUDE)

// Return enumeration of 2 kings and 3 pieces

template <int piw1, int piw2, int piw3, bool fPawns, bool fInvert> class TEnumerate3
	{
public:
	static INLINE INDEX TB_FASTCALL Index
		(
		square	sqwk,
		square	sqw1,
		square	sqw2,
		square	sqw3,
		square	sqbk
		)
		{
		INDEX	ind1, ind2, ind3, cInd1, cInd2, cInd3;
		ULONG	ulKings;

		// For black pawn invert the board
		if (piw3 <= x_piecePawn && fInvert)
			{
			sqwk = reflect_x(sqwk);
			sqw1 = reflect_x(sqw1);
			sqw2 = reflect_x(sqw2);
			sqw3 = reflect_x(sqw3);
			sqbk = reflect_x(sqbk);
			}
		
		// Get enumerated squares for all pieces
		if (piw1 == piw2 && piw1 == piw3)
			{
			SORT (sqw1, sqw2);
			SORT (sqw2, sqw3);
			SORT (sqw1, sqw2);
			}
		else if (piw1 == piw2)
			{
			SORT (sqw1, sqw2);
			}
		else if (piw2 == piw3)
			{
			SORT (sqw2, sqw3);
			}
		ind1 = rgprgsqPiece[piw1][sqbk*64+sqw1];
		ind2 = rgprgsqPiece[piw2][sqbk*64+sqw2];
		ind3 = rgprgsqPiece[piw3][sqbk*64+sqw3];
#if defined (ILLEGAL_POSSIBLE)
		if ((BYTE) -1 == ind1 || (BYTE) -1 == ind2 || (BYTE) -1 == ind3)
			return INF_TRIPLE;
#endif
		// Get enumerated position of both kings
		if (fPawns)
			ulKings = rgsHalfKings[sqwk*64+sqbk];	// 0..1805
		else
			ulKings = rgsTriKings[sqwk*64+sqbk];	// 0..461
#if defined (ILLEGAL_POSSIBLE)
		if (INF == ulKings)
			return INF_TRIPLE;
#endif
		if (piw1 == piw2 && piw2 == piw3)
			{
			// Can we remove one extra square?
			if ((piw1>x_pieceKnight) || ((BYTE)-1 != rgprgsqPiece[piw1][sqbk*64+sqwk]))
				{
				ind1 -= (sqw1 > sqwk);
				ind2 -= (sqw2 > sqwk);
				ind3 -= (sqw3 > sqwk);
				}
			// Add enumerated squares to the # of the preceeding positions
			return	ind3*(ind3-1)*(ind3-2)/6 + ind2*(ind2-1)/2 + ind1 +
					(fPawns ? rgprgulTriplePawnPresent[piw1][piw2][piw3][ulKings] :
							  rgprgulTriplePawnless[piw1][piw2][piw3][ulKings]);
			}
		else if (piw1 == piw2)
			{
			// Can we remove one extra square?
			if ((piw1>x_pieceKnight) || ((BYTE)-1 != rgprgsqPiece[piw1][sqbk*64+sqwk]))
				{
				ind1 -= (sqw1 > sqwk);
				ind2 -= (sqw2 > sqwk);
				}
			// Get # of enumerated positions of 3rd piece
			cInd3 = rgcLegal[piw3][sqbk];
			// Can we remove WK square from 3rd piece Enumeration?
			if ((piw3>x_pieceKnight) || ((BYTE)-1 != rgprgsqPiece[piw3][sqbk*64+sqwk]))
				{
				cInd3 --;
				ind3 -= (sqw3 > sqwk);
				}
			// Add enumerated squares to the # of the preceeding positions
			return	(ind2*(ind2-1)/2 + ind1)*cInd3 + ind3 +
					(fPawns ? rgprgulTriplePawnPresent[piw1][piw2][piw3][ulKings] :
							  rgprgulTriplePawnless[piw1][piw2][piw3][ulKings]);
			}
		else if (piw2 == piw3)
			{
			// Can we remove one extra square?
			if ((piw2>x_pieceKnight) || ((BYTE)-1 != rgprgsqPiece[piw2][sqbk*64+sqwk]))
				{
				ind2 -= (sqw2 > sqwk);
				ind3 -= (sqw3 > sqwk);
				}
			// Get # of enumerated positions of 1st piece
			cInd1 = rgcLegal[piw1][sqbk];
			// Can we remove WK square from 3rd piece Enumeration?
			if ((piw1>x_pieceKnight) || ((BYTE)-1 != rgprgsqPiece[piw1][sqbk*64+sqwk]))
				{
				cInd1 --;
				ind1 -= (sqw1 > sqwk);
				}
			// Add enumerated squares to the # of the preceeding positions
			return	(ind3*(ind3-1)/2 + ind2)*cInd1 + ind1 +
					(fPawns ? rgprgulTriplePawnPresent[piw1][piw2][piw3][ulKings] :
							  rgprgulTriplePawnless[piw1][piw2][piw3][ulKings]);
			}
		else
			{
			// Can we remove WK square from 1st piece Enumeration?
			if ((piw1>x_pieceKnight) || ((BYTE)-1 != rgprgsqPiece[piw1][sqbk*64+sqwk]))
				ind1 -= (sqw1 > sqwk);
			// Get # of enumerated positions of 2nd piece
			cInd2 = rgcLegal[piw2][sqbk];
			// Can we remove WK square from 2nd piece Enumeration?
			if ((piw2>x_pieceKnight) || ((BYTE)-1 != rgprgsqPiece[piw2][sqbk*64+sqwk]))
				{
				cInd2 --;
				ind2 -= (sqw2 > sqwk);
				}
			// Get # of enumerated positions of 3rd piece
			cInd3 = rgcLegal[piw3][sqbk];
			// Can we remove WK square from 3rd piece Enumeration?
			if ((piw3>x_pieceKnight) || ((BYTE)-1 != rgprgsqPiece[piw3][sqbk*64+sqwk]))
				{
				cInd3 --;
				ind3 -= (sqw3 > sqwk);
				}
			// Add enumerated square to the # of the preceeding positions
			return	cInd3*(cInd2*ind1 + ind2) + ind3 +
					(fPawns ? rgprgulTriplePawnPresent[piw1][piw2][piw3][ulKings] :
							  rgprgulTriplePawnless[piw1][piw2][piw3][ulKings]);
			}
		}
	};

#endif

// Enumerate en passant captures

static INLINE INDEX TB_FASTCALL IndEnPassant11W
	(
	square	sqw,
	square	sqb,
	square	sqEnP
	)
	{
	assert (sqb+8 == sqEnP);
	if (sqw+7 == sqEnP)
		// Capture to the left
		return	(sqw&7)-1;
	else
		{
		// Capture to the right
		assert (sqw+9 == sqEnP);
		return	(sqw&7)+7;
		}
	}

static INLINE INDEX TB_FASTCALL IndEnPassant11B
	(
	square	sqw,
	square	sqb,
	square	sqEnP
	)
	{
	assert (sqw-8 == sqEnP);
	if (sqb-9 == sqEnP)
		// Capture to the left
		return (sqb&7)-1;
	else
		{
		// Capture to the right
		assert (sqb-7 == sqEnP);
		return (sqb&7)+7;
		}
	}

static INLINE INDEX TB_FASTCALL IndEnPassant21W
	(
	square	sqw1,
	square	sqw2,
	square	sqb,
	square	sqEnP
	)
	{
	assert (sqb+8 == sqEnP);
	SORT (sqw1, sqw2);
	if (sqw1+7 == sqEnP && 0 != TbColumn(sqw1))
		// Capture to the left
		return (sqw1&7)-1+(EXCLUDE3(sqw2,sqb,sqEnP,sqEnP+8)-i8-1)*i14;
	else if (sqw1+9 == sqEnP && 7 != TbColumn(sqw1))
		// Capture to the right
		return (sqw1&7)+7+(EXCLUDE3(sqw2,sqb,sqEnP,sqEnP+8)-i8-1)*i14;
	else if (sqw2+7 == sqEnP && 0 != TbColumn(sqw2))
		// Capture to the left
		return (sqw2&7)-1+(EXCLUDE3(sqw1,sqb,sqEnP,sqEnP+8)-i8)*i14;
	else
		{
		// Capture to the right
		assert (sqw2+9 == sqEnP && 7 != TbColumn(sqw2));
		return (sqw2&7)+7+(EXCLUDE3(sqw1,sqb,sqEnP,sqEnP+8)-i8)*i14;
		}
	}

static INLINE INDEX TB_FASTCALL IndEnPassant21B
	(
	square	sqw1,
	square	sqw2,
	square	sqb,
	square	sqEnP
	)
	{
	assert (sqw1 < sqw2);	// Must be already sorted
	if (sqb-9 == sqEnP && 0 != TbColumn(sqb))
		// Capture to the left
		if (sqw1-8 == sqEnP)
			return (sqb&7)-1+(EXCLUDE3(sqw2,sqb,sqEnP,sqEnP-8)-i8-1)*i14;
		else
			{
			assert (sqw2-8 == sqEnP);
			return (sqb&7)-1+(EXCLUDE3(sqw1,sqb,sqEnP,sqEnP-8)-i8)*i14;
			}
	else
		{
		// Capture to the right
		assert (sqb-7 == sqEnP && 7 != TbColumn(sqb));
		if (sqw1-8 == sqEnP)
			return (sqb&7)+7+(EXCLUDE3(sqw2,sqb,sqEnP,sqEnP-8)-i8-1)*i14;
		else
			{
			assert (sqw2-8 == sqEnP);
			return (sqb&7)+7+(EXCLUDE3(sqw1,sqb,sqEnP,sqEnP-8)-i8)*i14;
			}
		}
	}

// Index calculation functions for different endgame classes

template <int piw1> class T21
	{
public:
	static INDEX TB_FASTCALL IndCalcW
		(
		square	*psqW,
		square	*psqB,
		square	sqEnP,
		int		fInvert
		)
		{
		square sqwk, sqw1, sqbk, sqMask;

		sqwk = SqFindKing (psqW);
		sqw1 = SqFindOne  (psqW, piw1);
		sqbk = SqFindKing (psqB);

		if (x_piecePawn == piw1)
			sqMask = rgsqReflectMaskY [sqwk] ^ rgsqReflectInvertMask [fInvert];
		else
			sqMask = rgsqReflectMaskYandX [sqwk];
		sqwk ^= sqMask;
		sqbk ^= sqMask;
		sqw1 ^= sqMask;

		if (x_piecePawn != piw1)
			{
			// No pawn
			if (! FInTriangle (sqwk, sqbk))
				{
				sqwk = reflect_xy(sqwk);
				sqbk = reflect_xy(sqbk);
				sqw1 = reflect_xy(sqw1);
				};
			}
		return TEnumerate1<piw1,x_piecePawn==piw1 ? true : false,false>::Index(sqwk,sqw1,sqbk);
		}

	static INDEX TB_FASTCALL IndCalcB
		(
		square	*psqW,
		square	*psqB,
		square	sqEnP,
		int		fInvert
		)
		{
		square sqwk, sqw1, sqbk, sqMask;

		sqwk = SqFindKing (psqW);
		sqw1 = SqFindOne  (psqW, piw1);
		sqbk = SqFindKing (psqB);

		if (x_piecePawn == piw1)
			sqMask = rgsqReflectMaskY [sqbk] ^ rgsqReflectInvertMask [fInvert];
		else
			sqMask = rgsqReflectMaskYandX [sqbk];
		sqwk ^= sqMask;
		sqbk ^= sqMask;
		sqw1 ^= sqMask;

		if (x_piecePawn == piw1)
			return TEnumerate1<x_pieceNone,true,true>::Index(sqbk,sqw1,sqwk);
		else
			{
			// No pawn
			if (! FInTriangle (sqbk, sqwk))
				{
				sqwk = reflect_xy(sqwk);
				sqbk = reflect_xy(sqbk);
				sqw1 = reflect_xy(sqw1);
				};
			return IndTriKings(sqbk,sqwk)*i62 + EXCLUDE2(sqw1,sqwk,sqbk);
			}
		}
	};

template <int piw1, int pib1> class T22
	{
public:
	static INDEX TB_FASTCALL IndCalcW
		(
		square	*psqW,
		square	*psqB,
		square	sqEnP,
		int		fInvert
		)
		{
		square sqwk, sqw1, sqbk, sqb1, sqMask;

		sqwk = SqFindKing (psqW);
		sqw1 = SqFindOne  (psqW, piw1);
		sqbk = SqFindKing (psqB);
		sqb1 = SqFindOne  (psqB, pib1);

		if (x_piecePawn == pib1)
			sqMask = rgsqReflectMaskY [sqwk] ^ rgsqReflectInvertMask [fInvert];
		else
			sqMask = rgsqReflectMaskYandX [sqwk];
		sqwk ^= sqMask;
		sqbk ^= sqMask;
		sqw1 ^= sqMask;
		sqb1 ^= sqMask;

		if (x_piecePawn == pib1)
			{
			// There are pawns on the board
			if (x_piecePawn == piw1)
				{
				// One white and one black pawn
				if (XX == sqEnP)
					return	TEnumerate1<x_piecePawn,true,false>::Index(sqwk,sqw1,sqbk)*i47 + 
							EXCLUDE1(sqb1,sqw1)-i8;	// 47
				else
					return	rgcSinglePawnPresent[x_piecePawn]*i47 +
							IndHalfKings(sqwk,sqbk)*i14 +
							IndEnPassant11W (sqw1, sqb1, sqEnP ^ sqMask);
				}
			else
				// Only black pawn
				return	TEnumerate1<piw1,true,false>::Index(sqwk,sqw1,sqbk)*i48 + sqb1-i8;
			}
		else
			{
			// No pawns at all
			if (!FInTriangle (sqwk, sqbk))
				{
				sqwk = reflect_xy(sqwk);
				sqbk = reflect_xy(sqbk);
				sqw1 = reflect_xy(sqw1);
				sqb1 = reflect_xy(sqb1);
				};
			return	TEnumerate1<piw1,false,false>::Index(sqwk,sqw1,sqbk)*i61 +
					EXCLUDE3(sqb1,sqwk,sqbk,sqw1);	// 61
			}
		}

	static INDEX TB_FASTCALL IndCalcB
		(
		square	*psqW,
		square	*psqB,
		square	sqEnP,
		int		fInvert
		)
		{
		square sqwk, sqw1, sqbk, sqb1, sqMask;

		sqwk = SqFindKing (psqW);
		sqw1 = SqFindOne  (psqW, piw1);
		sqbk = SqFindKing (psqB);
		sqb1 = SqFindOne  (psqB, pib1);

		if (x_piecePawn == pib1)
			sqMask = rgsqReflectMaskY [sqbk] ^ rgsqReflectInvertMask [fInvert];
		else
			sqMask = rgsqReflectMaskYandX [sqbk];
		sqwk ^= sqMask;
		sqbk ^= sqMask;
		sqw1 ^= sqMask;
		sqb1 ^= sqMask;

		if (x_piecePawn == pib1)
			{
			// There are pawns on the board
			if (x_piecePawn == piw1)
				{
				// One white and one black pawn
				if (XX == sqEnP)
					return	TEnumerate1<x_piecePawn,true,true>::Index(sqbk,sqb1,sqwk)*i47 + 
							EXCLUDE1(sqw1,sqb1)-i8;	// 47
				else
					return	rgcSinglePawnPresent[x_piecePawn]*i47 +
							IndHalfKings(sqbk,sqwk)*i14 +
							IndEnPassant11B (sqw1, sqb1, sqEnP ^ sqMask);
				}
			}
		else
			{
			// No pawns at all
			if (!FInTriangle (sqbk, sqwk))
				{
				sqwk = reflect_xy(sqwk);
				sqbk = reflect_xy(sqbk);
				sqw1 = reflect_xy(sqw1);
				sqb1 = reflect_xy(sqb1);
				};
			}
		return	(x_piecePawn == pib1 ?	TEnumerate1<pib1,true,true>::Index(sqbk,sqb1,sqwk) :
										TEnumerate1<pib1,false,false>::Index(sqbk,sqb1,sqwk))*i61 +
				EXCLUDE3(sqw1,sqwk,sqbk,sqb1);	// 61
		}
	};

template <int piw1, int piw2> class T31
	{
public:
	static INDEX TB_FASTCALL IndCalcW
		(
		square	*psqW,
		square	*psqB,
		square	sqEnP,
		int		fInvert
		)
		{
		square sqwk, sqw1, sqw2, sqbk, sqMask;

		sqwk = SqFindKing (psqW);
		if (piw1 == piw2)
			{
			sqw1 = SqFindFirst  (psqW, piw1);
			sqw2 = SqFindSecond (psqW, piw2);
			}
		else
			{
			SqFind2 (psqW, piw1, sqw1, piw2, sqw2);
			}
		sqbk = SqFindKing (psqB);

		if (x_piecePawn == piw2)
			sqMask = rgsqReflectMaskY [sqwk] ^ rgsqReflectInvertMask [fInvert];
		else
			sqMask = rgsqReflectMaskYandX [sqwk];
		sqwk ^= sqMask;
		sqbk ^= sqMask;
		sqw1 ^= sqMask;
		sqw2 ^= sqMask;

		if (x_piecePawn != piw2)
			{
			// There are no pawns on the board
			if (!FInTriangle (sqwk, sqbk))
				{
				sqwk = reflect_xy(sqwk);
				sqw1 = reflect_xy(sqw1);
				sqw2 = reflect_xy(sqw2);
				sqbk = reflect_xy(sqbk);
				};
			}
		return TEnumerate2<piw1, piw2, x_piecePawn==piw2 ? true : false, false>::Index(sqwk, sqw1, sqw2, sqbk);
		}

	static INDEX TB_FASTCALL IndCalcB
		(
		square	*psqW,
		square	*psqB,
		square	sqEnP,
		int		fInvert
		)
		{
		square sqwk, sqw1, sqw2, sqbk, sqMask;

		sqwk = SqFindKing (psqW);
		if (piw1 == piw2)
			{
			sqw1 = SqFindFirst (psqW, piw1);
			sqw2 = SqFindSecond (psqW, piw2);
			}
		else
			{
			SqFind2 (psqW, piw1, sqw1, piw2, sqw2);
			}
		sqbk = SqFindKing (psqB);

		if (x_piecePawn == piw2)
			sqMask = rgsqReflectMaskY [sqbk] ^ rgsqReflectInvertMask [fInvert];
		else
			sqMask = rgsqReflectMaskYandX [sqbk];
		sqwk ^= sqMask;
		sqbk ^= sqMask;
		sqw1 ^= sqMask;
		sqw2 ^= sqMask;

		if (x_piecePawn == piw2)
			{
			// There are pawns on the board
			if (x_piecePawn == piw1)
				// Two white pawns
				return	TEnumerate2<x_pieceNone,x_pieceNone,true,true>::Index(sqbk,sqw1,sqw2,sqwk);
			else
				// Only one white pawn
				return	TEnumerate1<x_pieceNone,true,true>::Index(sqbk,sqw2,sqwk)*i61 +
						EXCLUDE3(sqw1,sqwk,sqbk,sqw2);	// 61
			}
		else
			{
			// No pawns
			if (!FInTriangle (sqbk, sqwk))
				{
				sqwk = reflect_xy(sqwk);
				sqw1 = reflect_xy(sqw1);
				sqw2 = reflect_xy(sqw2);
				sqbk = reflect_xy(sqbk);
				};
			if (piw1 == piw2)
				{
				SORT (sqw1, sqw2);
				sqw2 = EXCLUDE2(sqw2,sqwk,sqbk);					// 62
				return	IndTriKings(sqbk,sqwk)*(i62*i61/2) +
						sqw2*(sqw2-1)/2+EXCLUDE2(sqw1,sqwk,sqbk);	// 62*61/2
				}
			else
				return	IndTriKings(sqbk,sqwk)*(i62*i61) +
						EXCLUDE2(sqw1,sqwk,sqbk)*i61 +	// 62
						EXCLUDE3(sqw2,sqwk,sqbk,sqw1);	// 61
			}
		}
	};

template <int piw1, int piw2, int pib1> class T32
	{
public:
	static INDEX TB_FASTCALL IndCalcW
		(
		square	*psqW,
		square	*psqB,
		square	sqEnP,
		int		fInvert
		)
		{
		square sqwk, sqw1, sqw2, sqbk, sqb1, sqMask;

		sqwk = SqFindKing (psqW);
		if (piw1 == piw2)
			{
			sqw1 = SqFindFirst  (psqW, piw1);
			sqw2 = SqFindSecond (psqW, piw2);
			}
		else
			{
			SqFind2 (psqW, piw1, sqw1, piw2, sqw2);
			}
		sqbk = SqFindKing (psqB);
		sqb1 = SqFindOne  (psqB, pib1);

		if (x_piecePawn == piw2 || x_piecePawn == pib1)
			sqMask = rgsqReflectMaskY [sqwk] ^ rgsqReflectInvertMask [fInvert];
		else
			sqMask = rgsqReflectMaskYandX [sqwk];
		sqwk ^= sqMask;
		sqbk ^= sqMask;
		sqw1 ^= sqMask;
		sqw2 ^= sqMask;
		sqb1 ^= sqMask;

		if (x_piecePawn == piw2 || x_piecePawn == pib1)
			{
			// There are pawns on the board
			if (x_piecePawn == pib1)
				{
				// Black pawn
				if (x_piecePawn == piw1 && x_piecePawn == piw2)
					{
					// All 3 pieces are pawns
					if (XX == sqEnP)
						return	TEnumerate2<x_piecePawn,x_piecePawn,true,false>::
									Index(sqwk,sqw1,sqw2,sqbk)*i46+
								EXCLUDE2(sqb1,sqw1,sqw2)-i8;	// 46
					else
						// En passant capture
						return	rgcPairPawnPresent[x_piecePawn][x_piecePawn]*i46 +
								IndHalfKings(sqwk,sqbk)*(i14*i44) +
								IndEnPassant21W (sqw1, sqw2, sqb1, sqEnP ^ sqMask);
					}
				else if (x_piecePawn == piw2)
					{
					// One white pawn, one black pawn
					if (XX == sqEnP)
						return	TEnumerate2<piw1,x_piecePawn,true,false>::
									Index(sqwk,sqw1,sqw2,sqbk)*i47 +
								EXCLUDE1(sqb1,sqw2)-i8;	// 47
					else
						// En passant capture
						return	rgcPairPawnPresent[piw1][x_piecePawn]*i47 +
								TEnumerate1<piw1,true,false>::Index(sqwk,sqw1,sqbk)*i14 +
								IndEnPassant11W (sqw2, sqb1, sqEnP ^ sqMask);
					}
				else
					// Only black pawn
					return	TEnumerate2<piw1,piw2,true,false>::
								Index(sqwk,sqw1,sqw2,sqbk)*i48 +
							sqb1-i8;	// 48
				}
			}
		else
			{
			// No pawns
			if (!FInTriangle (sqwk, sqbk))
				{
				sqwk = reflect_xy(sqwk);
				sqw1 = reflect_xy(sqw1);
				sqw2 = reflect_xy(sqw2);
				sqbk = reflect_xy(sqbk);
				sqb1 = reflect_xy(sqb1);
				};
			}
		return	TEnumerate2<piw1,piw2,(x_piecePawn==piw2||x_piecePawn==pib1) ? true : false,false>::
					Index(sqwk,sqw1,sqw2,sqbk)*i60 +
				EXCLUDE4(sqb1,sqwk,sqbk,sqw1,sqw2);	// 60
		}

	static INDEX TB_FASTCALL IndCalcB
		(
		square	*psqW,
		square	*psqB,
		square	sqEnP,
		int		fInvert
		)
		{
		square sqwk, sqw1, sqw2, sqbk, sqb1, sqMask;

		sqwk = SqFindKing (psqW);
		if (piw1 == piw2)
			{
			sqw1 = SqFindFirst  (psqW, piw1);
			sqw2 = SqFindSecond (psqW, piw2);
			}
		else
			{
			SqFind2 (psqW, piw1, sqw1, piw2, sqw2);
			}
		sqbk = SqFindKing (psqB);
		sqb1 = SqFindOne  (psqB, pib1);

		if (x_piecePawn == piw2 || x_piecePawn == pib1)
			sqMask = rgsqReflectMaskY [sqbk] ^ rgsqReflectInvertMask [fInvert];
		else
			sqMask = rgsqReflectMaskYandX [sqbk];
		sqwk ^= sqMask;
		sqbk ^= sqMask;
		sqw1 ^= sqMask;
		sqw2 ^= sqMask;
		sqb1 ^= sqMask;

		if (x_piecePawn == piw2 || x_piecePawn == pib1)
			{
			// There are pawns on the board
			if (x_piecePawn == pib1)
				{
				// Black pawn
				if (x_piecePawn == piw1 && x_piecePawn == piw2)
					{
					// All 3 pieces are pawns
					SORT (sqw1, sqw2);
					if (XX == sqEnP)
						{
						sqw2 = EXCLUDE1(sqw2,sqb1)-i8;					// 47
						return	TEnumerate1<x_piecePawn,true,true>::
									Index(sqbk,sqb1,sqwk)*(i47*i46/2) +
								sqw2*(sqw2-1)/2+EXCLUDE1(sqw1,sqb1)-i8;	// 47*46/2
						}
					else
						// En passant capture
						return	rgcSinglePawnPresent[x_piecePawn]*(i47*i46/2) +
								IndHalfKings(sqbk,sqwk)*(i44*i14) +
								IndEnPassant21B (sqw1, sqw2, sqb1, sqEnP ^ sqMask);
					}
				else if (x_piecePawn == piw2)
					{
					// One white pawn, one black pawn
					if (XX == sqEnP)
						return	TEnumerate1<x_piecePawn,true,true>::
									Index(sqbk,sqb1,sqwk)*(i60*i47) +
								EXCLUDE4(sqw1,sqwk,sqbk,sqw2,sqb1)*i47 +	// 60
								EXCLUDE1(sqw2,sqb1)-i8;						// 47
					else
						{
						// En passant capture
						sqEnP ^= sqMask;
						return	rgcSinglePawnPresent[x_piecePawn]*(i60*i47) +
								IndHalfKings(sqbk,sqwk)*(i58*i14) +
								EXCLUDE6(sqw1,sqwk,sqbk,sqw2,sqb1,sqEnP,sqEnP-8)*i14 +	// 58
								IndEnPassant11B (sqw2, sqb1, sqEnP);
						}
					}
				else
					{
					// Only black pawn
					if (piw1 == piw2)
						{
						// 2 identical white pieces
						SORT (sqw1, sqw2);
						sqw2 = EXCLUDE3(sqw2,sqwk,sqbk,sqb1);						// 61
						return	TEnumerate1<x_piecePawn,true,true>::
									Index(sqbk,sqb1,sqwk)*(i61*i60/2) +
								sqw2*(sqw2-1)/2 + EXCLUDE3(sqw1,sqwk,sqbk,sqb1);	// 61*60/2
						}
					return	TEnumerate1<x_piecePawn,true,true>::
								Index(sqbk,sqb1,sqwk)*(i61*i60) +
							EXCLUDE3(sqw1,sqwk,sqbk,sqb1)*i60 +	// 61
							EXCLUDE4(sqw2,sqwk,sqbk,sqw1,sqb1);	// 60
					}
				}
			else
				{
				// No black pawn
				if (x_piecePawn == piw1)
					{
					// Only 2 white pawns
					SORT (sqw1, sqw2);
					sqw2 -= i8;
					return	TEnumerate1<pib1,true,true>::
								Index(sqbk,sqb1,sqwk)*(i48*47/2) +
							sqw2*(sqw2-1)/2+sqw1-i8;			// 48*47/2
					}
				else
					// Only one white pawn
					return	TEnumerate1<pib1,true,true>::
								Index(sqbk,sqb1,sqwk)*(i60*i48) +
							EXCLUDE4(sqw1,sqwk,sqbk,sqw2,sqb1)*i48 +	// 60
							sqw2-i8;									// 48
				}
			}
		else
			{
			// No pawns
			if (!FInTriangle (sqbk, sqwk))
				{
				sqwk = reflect_xy(sqwk);
				sqw1 = reflect_xy(sqw1);
				sqw2 = reflect_xy(sqw2);
				sqbk = reflect_xy(sqbk);
				sqb1 = reflect_xy(sqb1);
				};
			if (piw1 == piw2)
				{
				// 2 identical white pieces
				SORT (sqw1, sqw2);
				sqw2 = EXCLUDE3(sqw2,sqwk,sqbk,sqb1);					// 61
				return	TEnumerate1<pib1,false,false>::
							Index(sqbk,sqb1,sqwk)*(i61*i60/2) +
						sqw2*(sqw2-1)/2+EXCLUDE3(sqw1,sqwk,sqbk,sqb1);	// 61*60/2
				}
			else
				return	TEnumerate1<pib1,false,false>::
							Index(sqbk,sqb1,sqwk)*(i61*i60) +
						EXCLUDE3(sqw1,sqwk,sqbk,sqb1)*i60 +	// 61
						EXCLUDE4(sqw2,sqwk,sqbk,sqw1,sqb1);	// 60
			}
		}
	};

#if defined (T41_INCLUDE)

template <int piw1, int piw2, int piw3> class T41
	{
public:
	static INDEX TB_FASTCALL IndCalcW
		(
		square	*psqW,
		square	*psqB,
		square	sqEnP,
		int		fInvert
		)
		{
		square sqwk, sqw1, sqw2, sqw3, sqbk, sqMask;

		sqwk = SqFindKing (psqW);
		sqw1 = SqFindFirst (psqW, piw1);
		if (piw1 == piw2 && piw2 == piw3)
			{
			sqw2 = SqFindSecond (psqW, piw2);
			sqw3 = SqFindThird (psqW, piw3);
			}
		else if (piw1 == piw2)
			{
			sqw2 = SqFindSecond (psqW, piw2);
			sqw3 = SqFindFirst (psqW, piw3);
			}
		else if (piw2 == piw3)
			{
			sqw2 = SqFindFirst (psqW, piw2);
			sqw3 = SqFindSecond (psqW, piw3);
			}
		else
			{
			sqw2 = SqFindFirst (psqW, piw2);
			sqw3 = SqFindFirst (psqW, piw3);
			}
		sqbk = SqFindKing (psqB);

		if (x_piecePawn == piw3)
			sqMask = rgsqReflectMaskY [sqwk] ^ rgsqReflectInvertMask [fInvert];
		else
			sqMask = rgsqReflectMaskYandX [sqwk];
		sqwk ^= sqMask;
		sqbk ^= sqMask;
		sqw1 ^= sqMask;
		sqw2 ^= sqMask;
		sqw3 ^= sqMask;

		if (x_piecePawn != piw3)
			{
			// No pawns
			if (!FInTriangle (sqwk, sqbk))
				{
				sqwk = reflect_xy(sqwk);
				sqw1 = reflect_xy(sqw1);
				sqw2 = reflect_xy(sqw2);
				sqw3 = reflect_xy(sqw3);
				sqbk = reflect_xy(sqbk);
				};
			}
		return	TEnumerate3<piw1,piw2,piw3,x_piecePawn == piw3,false>::Index(sqwk,sqw1,sqw2,sqw3,sqbk);
		}

	static INDEX TB_FASTCALL IndCalcB
		(
		square	*psqW,
		square	*psqB,
		square	sqEnP,
		int		fInvert
		)
		{
		square sqwk, sqw1, sqw2, sqw3, sqbk, sqMask;

		sqwk = SqFindKing (psqW);
		sqw1 = SqFindFirst (psqW, piw1);
		if (piw1 == piw2 && piw2 == piw3)
			{
			sqw2 = SqFindSecond (psqW, piw2);
			sqw3 = SqFindThird (psqW, piw3);
			}
		else if (piw1 == piw2)
			{
			sqw2 = SqFindSecond (psqW, piw2);
			sqw3 = SqFindFirst (psqW, piw3);
			}
		else if (piw2 == piw3)
			{
			sqw2 = SqFindFirst (psqW, piw2);
			sqw3 = SqFindSecond (psqW, piw3);
			}
		else
			{
			sqw2 = SqFindFirst (psqW, piw2);
			sqw3 = SqFindFirst (psqW, piw3);
			}
		sqbk = SqFindKing (psqB);

		if (x_piecePawn == piw3)
			sqMask = rgsqReflectMaskY [sqbk] ^ rgsqReflectInvertMask [fInvert];
		else
			sqMask = rgsqReflectMaskYandX [sqbk];
		sqwk ^= sqMask;
		sqbk ^= sqMask;
		sqw1 ^= sqMask;
		sqw2 ^= sqMask;
		sqw3 ^= sqMask;

		if (x_piecePawn == piw3)
			{
			// There are pawns on the board
			if (x_piecePawn == piw1)
				// 3 white pawns
				return	TEnumerate3<x_pieceNone,x_pieceNone,x_pieceNone,true,true>::
							Index(sqbk,sqw1,sqw2,sqw3,sqwk);
			else if (x_piecePawn == piw2)
				// 2 white pawns
				return	TEnumerate2<x_pieceNone,x_pieceNone,true,true>::
							Index(sqbk,sqw2,sqw3,sqwk)*i60 +
						EXCLUDE4(sqw1,sqwk,sqbk,sqw2,sqw3);	// 60
			else if (piw1 == piw2)
				{
				// 1 pawn, 2 pieces equal
				SORT (sqw1, sqw2);
				sqw2 = EXCLUDE3(sqw2,sqwk,sqbk,sqw3);					// 61
				return	TEnumerate1<x_pieceNone,true,true>::
							Index(sqbk,sqw3,sqwk)*(i61*i60/2) +
						sqw2*(sqw2-1)/2+EXCLUDE3(sqw1,sqwk,sqbk,sqw3);	// 61*60/2
				}
			else
				// Only one white pawn
				return	TEnumerate1<x_pieceNone,true,true>::Index(sqbk,sqw3,sqwk)*i61*i60 +
						EXCLUDE3(sqw1,sqwk,sqbk,sqw3)*i60 +	// 61
						EXCLUDE4(sqw2,sqwk,sqbk,sqw1,sqw3);	// 60
			}
		else
			{
			// No pawns
			if (!FInTriangle (sqbk, sqwk))
				{
				sqwk = reflect_xy(sqwk);
				sqw1 = reflect_xy(sqw1);
				sqw2 = reflect_xy(sqw2);
				sqw3 = reflect_xy(sqw3);
				sqbk = reflect_xy(sqbk);
				};
			if (piw1 == piw2 && piw2 == piw3)
				{
				// All 3 pieces equal
				SORT (sqw1, sqw2);
				SORT (sqw2, sqw3);
				SORT (sqw1, sqw2);
				sqw3 = EXCLUDE2(sqw3,sqwk,sqbk);	// 62
				sqw2 = EXCLUDE2(sqw2,sqwk,sqbk);
				return	IndTriKings(sqbk,sqwk)*(i62*i61*i60/6) +
						sqw3*(sqw3-1)*(sqw3-2)/6+
						sqw2*(sqw2-1)/2+
						EXCLUDE2(sqw1,sqwk,sqbk);	// 62*61*60/6
				}
			else if (piw1 == piw2)
				{
				// 2 major pieces equal
				SORT (sqw1, sqw2);
				sqw2 = EXCLUDE3(sqw2,sqwk,sqbk,sqw3);							// 61
				return	IndTriKings(sqbk,sqwk)*(i61*i60/2*i62) +
						(sqw2*(sqw2-1)/2+EXCLUDE3(sqw1,sqwk,sqbk,sqw3))*i62 +	// 61*60/2
						EXCLUDE2(sqw3,sqwk,sqbk);								// 62
				}
			else if (piw2 == piw3)
				{
				// 2 minor pieces equal
				SORT (sqw2, sqw3);
				sqw3 = EXCLUDE3(sqw3,sqwk,sqbk,sqw1);					// 61
				return	IndTriKings(sqbk,sqwk)*(i62*i61*i60/2) +
						EXCLUDE2(sqw1,sqwk,sqbk)*(i61*i60/2) +			// 62
						sqw3*(sqw3-1)/2+EXCLUDE3(sqw2,sqwk,sqbk,sqw1);	// 61*60/2
				}
			else
				return	IndTriKings(sqbk,sqwk)*(i62*i61*i60) +
						EXCLUDE2(sqw1,sqwk,sqbk)*(i61*i60) +	// 62
						EXCLUDE3(sqw2,sqwk,sqbk,sqw1)*i60 +		// 61
						EXCLUDE4(sqw3,sqwk,sqbk,sqw1,sqw2);		// 60
			}
		}
	};

#endif	// T41

#if defined (T33_INCLUDE)

template <int piw1, int piw2, int pib1, int pib2> class T33
	{
public:
	static INDEX TB_FASTCALL IndCalcW
		(
		square	*psqW,
		square	*psqB,
		square	sqEnP,
		int		fInvert
		)
		{
		square sqwk, sqw1, sqw2, sqbk, sqb1, sqb2, sqMask;
		INDEX ind;

		sqwk = SqFindKing (psqW);
		if (piw1 == piw2)
			{
			sqw1 = SqFindFirst  (psqW, piw1);
			sqw2 = SqFindSecond (psqW, piw2);
			}
		else
			{
			SqFind2 (psqW, piw1, sqw1, piw2, sqw2);
			}
		sqbk = SqFindKing (psqB);
		if (pib1 == pib2)
			{
			sqb1 = SqFindFirst  (psqB, pib1);
			sqb2 = SqFindSecond (psqB, pib2);
			}
		else
			{
			SqFind2 (psqB, pib1, sqb1, pib2, sqb2);
			}

		assert (x_piecePawn != piw2 && x_piecePawn != pib2);
		sqMask = rgsqReflectMaskYandX [sqwk];
		sqwk ^= sqMask;
		sqbk ^= sqMask;
		sqw1 ^= sqMask;
		sqw2 ^= sqMask;
		sqb1 ^= sqMask;
		sqb2 ^= sqMask;

		if (!FInTriangle (sqwk, sqbk))
			{
			sqwk = reflect_xy(sqwk);
			sqw1 = reflect_xy(sqw1);
			sqw2 = reflect_xy(sqw2);
			sqbk = reflect_xy(sqbk);
			sqb1 = reflect_xy(sqb1);
			sqb2 = reflect_xy(sqb2);
			}
		ind = TEnumerate2<piw1,piw2,false,false>::Index(sqwk,sqw1,sqw2,sqbk);
#if defined (ILLEGAL_POSSIBLE)
		if (INF_PAIR == ind)
			return (INDEX) -1;
#endif
		if (pib1 == pib2)
			{
			SORT (sqb1, sqb2);
			sqb2 = EXCLUDE4(sqb2,sqwk,sqbk,sqw1,sqw2);	// 60
			return	ind*(i60*i59/2) +
					sqb2*(sqb2-1)/2+
					EXCLUDE4(sqb1,sqwk,sqbk,sqw1,sqw2);	// 60*59/2
			}
		else
			return	ind*(i60*i59) +
					EXCLUDE4(sqb1,sqwk,sqbk,sqw1,sqw2)*i59 +	// 60
					EXCLUDE5(sqb2,sqwk,sqbk,sqw1,sqw2,sqb1);	// 59
		}

	static INDEX TB_FASTCALL IndCalcB
		(
		square	*psqW,
		square	*psqB,
		square	sqEnP,
		int		fInvert
		)
		{
		square sqwk, sqw1, sqw2, sqbk, sqb1, sqb2, sqMask;
		INDEX ind;

		sqwk = SqFindKing (psqW);
		if (piw1 == piw2)
			{
			sqw1 = SqFindFirst  (psqW, piw1);
			sqw2 = SqFindSecond (psqW, piw2);
			}
		else
			{
			SqFind2 (psqW, piw1, sqw1, piw2, sqw2);
			}
		sqbk = SqFindKing (psqB);
		if (pib1 == pib2)
			{
			sqb1 = SqFindFirst  (psqB, pib1);
			sqb2 = SqFindSecond (psqB, pib2);
			}
		else
			{
			SqFind2 (psqB, pib1, sqb1, pib2, sqb2);
			}

		assert (x_piecePawn != piw2 && x_piecePawn != pib2);
		sqMask = rgsqReflectMaskYandX [sqbk];
		sqwk ^= sqMask;
		sqbk ^= sqMask;
		sqw1 ^= sqMask;
		sqw2 ^= sqMask;
		sqb1 ^= sqMask;
		sqb2 ^= sqMask;

		if (!FInTriangle (sqbk, sqwk))
			{
			sqwk = reflect_xy(sqwk);
			sqw1 = reflect_xy(sqw1);
			sqw2 = reflect_xy(sqw2);
			sqbk = reflect_xy(sqbk);
			sqb1 = reflect_xy(sqb1);
			sqb2 = reflect_xy(sqb2);
			}
		ind = TEnumerate2<pib1,pib2,false,false>::Index(sqbk,sqb1,sqb2,sqwk);
#if defined (ILLEGAL_POSSIBLE)
		if (INF_PAIR == ind)
			return (INDEX) -1;
#endif
		if (piw1 == piw2)
			{
			SORT (sqw1, sqw2);
			sqw2 = EXCLUDE4(sqw2,sqbk,sqwk,sqb1,sqb2);	// 60
			return	ind*(i60*i59/2) +
					sqw2*(sqw2-1)/2+
					EXCLUDE4(sqw1,sqbk,sqwk,sqb1,sqb2);	// 60*59/2
			}
		else
			return	ind*(i60*i59) +
					EXCLUDE4(sqw1,sqbk,sqwk,sqb1,sqb2)*i59 +	// 60
					EXCLUDE5(sqw2,sqbk,sqwk,sqb1,sqb2,sqw1);	// 59
		}
	};

#endif	// T33

#else	// Old SJE schema ------------------------------------------------------

/* scanning pattern: triangle encoding */

static const INDEX sptriv[] = 
	{
	 0,  1,  2,  3, -1, -1, -1, -1,
	-1,  4,  5,  6, -1, -1, -1, -1,
	-1, -1,  7,  8, -1, -1, -1, -1,
	-1, -1, -1,  9, -1, -1, -1, -1,
	-1, -1, -1, -1, -1, -1, -1, -1,
	-1, -1, -1, -1, -1, -1, -1, -1,
	-1, -1, -1, -1, -1, -1, -1, -1,
	-1, -1, -1, -1, -1, -1, -1, -1,
	};

/* scanning pattern: queenside flank encoding */

static const INDEX spqsfv[] = 
	{
	 0,  1,  2,  3, -1, -1, -1, -1,
	 4,  5,  6,  7, -1, -1, -1, -1,
	 8,  9, 10, 11, -1, -1, -1, -1,
	12, 13, 14, 15, -1, -1, -1, -1,
	16, 17, 18, 19, -1, -1, -1, -1,
	20, 21, 22, 23, -1, -1, -1, -1,
	24, 25, 26, 27, -1, -1, -1, -1,
	28, 29, 30, 31, -1, -1, -1, -1,
	};

/*--> CalcIndex3A: calculate index, mode 3A */
INLINE INDEX CalcIndex3A
	(
	square sq0,
	square sq1,
	square sq2
	)
	{
	INDEX index;

	if (TbRow(sq2) > x_row_4)
		{
		sq0 = reflect_x(sq0);
		sq1 = reflect_x(sq1);
		sq2 = reflect_x(sq2);
		};

	if (TbColumn(sq2) > x_column_d)
		{
		sq0 = reflect_y(sq0);
		sq1 = reflect_y(sq1);
		sq2 = reflect_y(sq2);
		};

	if (TbRow(sq2) > TbColumn(sq2))
		{
		sq0 = reflect_xy(sq0);
		sq1 = reflect_xy(sq1);
		sq2 = reflect_xy(sq2);
		};

	index =
		sq0 +
		sq1 * i64 +
		sptriv [sq2] * i64 * i64;

	return (index);
	}

/*--> CalcIndex3B: calculate index, mode 3B */
INLINE INDEX CalcIndex3B
	(
	square sq0,
	square sq1,
	square sq2
	)
	{
	INDEX index;

	if (TbColumn(sq1) > x_column_d)
		{
		sq0 = reflect_y(sq0);
		sq1 = reflect_y(sq1);
		sq2 = reflect_y(sq2);
		};

	index =
		sq0 +
		spqsfv [sq1] * i64 +
		sq2 * (i64 / 2) * i64;

	return (index);
	}

/*--> CalcIndex4A: calculate index, mode 4A */
INLINE INDEX CalcIndex4A
	(
	square sq0,
	square sq1,
	square sq2,
	square sq3
	)
	{
	INDEX index;

	if (TbRow(sq3) > x_row_4)
		{
		sq0 = reflect_x(sq0);
		sq1 = reflect_x(sq1);
		sq2 = reflect_x(sq2);
		sq3 = reflect_x(sq3);
		};

	if (TbColumn(sq3) > x_column_d)
		{
		sq0 = reflect_y(sq0);
		sq1 = reflect_y(sq1);
		sq2 = reflect_y(sq2);
		sq3 = reflect_y(sq3);
		};

	if (TbRow(sq3) > TbColumn(sq3))
		{
		sq0 = reflect_xy(sq0);
		sq1 = reflect_xy(sq1);
		sq2 = reflect_xy(sq2);
		sq3 = reflect_xy(sq3);
		};

	index =
		sq0 +
		sq1 * i64 +
		sq2 * i64 * i64 +
		sptriv [sq3] * i64 * i64 * i64;

	return (index);
	}

/*--> CalcIndex4B: calculate index, mode 4B */
INLINE INDEX CalcIndex4B
	(
	square sq0,
	square sq1,
	square sq2,
	square sq3
	)
	{
	INDEX index;

	if (TbColumn(sq3) > x_column_d)
		{
		sq0 = reflect_y(sq0);
		sq1 = reflect_y(sq1);
		sq2 = reflect_y(sq2);
		sq3 = reflect_y(sq3);
		};

	index =
		sq0 +
		sq1 * i64 +
		sq2 * i64 * i64 +
		spqsfv [sq3] * i64 * i64 * i64;

	return (index);
	}

/*--> CalcIndex4C: calculate index, mode 4C */
INLINE INDEX CalcIndex4C
	(
	square sq0,
	square sq1,
	square sq2,
	square sq3
	)
	{
	INDEX index;

	if (TbColumn(sq2) > x_column_d)
		{
		sq0 = reflect_y(sq0);
		sq1 = reflect_y(sq1);
		sq2 = reflect_y(sq2);
		sq3 = reflect_y(sq3);
		};

	index =
		sq0 +
		sq1 * i64 +
		spqsfv [sq2] * i64 * i64 +
		sq3 * (i64 / 2) * i64 * i64;

	return (index);
	}

/*--> CalcIndex5A: calculate index, mode 5A */
INLINE INDEX CalcIndex5A
	(
	square sq0,
	square sq1,
	square sq2,
	square sq3,
	square sq4
	)
	{
	INDEX index;

	if (TbRow(sq4) > x_row_4)
		{
		sq0 = reflect_x(sq0);
		sq1 = reflect_x(sq1);
		sq2 = reflect_x(sq2);
		sq3 = reflect_x(sq3);
		sq4 = reflect_x(sq4);
		};

	if (TbColumn(sq4) > x_column_d)
		{
		sq0 = reflect_y(sq0);
		sq1 = reflect_y(sq1);
		sq2 = reflect_y(sq2);
		sq3 = reflect_y(sq3);
		sq4 = reflect_y(sq4);
		};

	if (TbRow(sq4) > TbColumn(sq4))
		{
		sq0 = reflect_xy(sq0);
		sq1 = reflect_xy(sq1);
		sq2 = reflect_xy(sq2);
		sq3 = reflect_xy(sq3);
		sq4 = reflect_xy(sq4);
		};

	index =
		sq0 +
		sq1 * i64 +
		sq2 * i64 * i64 +
		sq3 * i64 * i64 * i64 +
		sptriv [sq4] * i64 * i64 * i64 * i64;

	return (index);
	}

/*--> CalcIndex5B: calculate index, mode 5B */
INLINE INDEX CalcIndex5B
	(
	square sq0,
	square sq1,
	square sq2,
	square sq3,
	square sq4
	)
	{
	INDEX index;

	if (TbColumn(sq4) > x_column_d)
		{
		sq0 = reflect_y(sq0);
		sq1 = reflect_y(sq1);
		sq2 = reflect_y(sq2);
		sq3 = reflect_y(sq3);
		sq4 = reflect_y(sq4);
		};

	index =
		sq0 +
		sq1 * i64 +
		sq2 * i64 * i64 +
		sq3 * i64 * i64 * i64 +
		spqsfv [sq4] * i64 * i64 * i64 * i64;

	return (index);
	}

/*--> CalcIndex5C: calculate index, mode 5C */
INLINE INDEX CalcIndex5C
	(
	square sq0,
	square sq1,
	square sq2,
	square sq3,
	square sq4
	)
	{
	INDEX index;

	if (TbColumn(sq3) > x_column_d)
		{
		sq0 = reflect_y(sq0);
		sq1 = reflect_y(sq1);
		sq2 = reflect_y(sq2);
		sq3 = reflect_y(sq3);
		sq4 = reflect_y(sq4);
		};

	index =
		sq0 +
		sq1 * i64 +
		sq2 * i64 * i64 +
		spqsfv [sq3] * i64 * i64 * i64 +
		sq4 * (i64 / 2) * i64 * i64 * i64;

	return (index);
	}

/*--> CalcIndex5D: calculate index, mode 5D */
INLINE INDEX CalcIndex5D
	(
	square sq0,
	square sq1,
	square sq2,
	square sq3,
	square sq4
	)
	{
	INDEX index;

	if (TbColumn(sq2) > x_column_d)
		{
		sq0 = reflect_y(sq0);
		sq1 = reflect_y(sq1);
		sq2 = reflect_y(sq2);
		sq3 = reflect_y(sq3);
		sq4 = reflect_y(sq4);
		};

	index =
		sq0 +
		sq1 * i64 +
		spqsfv [sq2] * i64 * i64 +
		sq3 * (i64 / 2) * i64 * i64 +
		sq4 * (i64 / 2) * i64 * i64 * i64;

	return (index);
	}

// Calculate index - a lot of functions...

#define	IndCalcW	IndCalc
#define	IndCalcB	IndCalc

template <int pi> class T21
	{
public:
	static INDEX TB_FASTCALL IndCalc
		(
		square	*psqW,
		square	*psqB,
		square	sqEnP,
		int		fInvert
		)
		{
		square sq0, sq1, sq2;

		sq0 = SqFindKing (psqW);
		sq1 = SqFindOne  (psqW, pi);
		sq2 = SqFindKing (psqB);

		if (x_piecePawn == pi)
			{
			if (fInvert)
				{
				sq0 = reflect_x (sq0);
				sq1 = reflect_x (sq1);
				sq2 = reflect_x (sq2);
				}
			return CalcIndex3B (sq0, sq1, sq2);
			}
		else
			return CalcIndex3A (sq0, sq1, sq2);
		}
	};

template <int pi1, int pi2> class T22
	{
public:
	static INDEX TB_FASTCALL IndCalc
		(
		square	*psqW,
		square	*psqB,
		square	sqEnP,
		int		fInvert
		)
		{
		square sq0, sq1, sq2, sq3;

		sq0 = SqFindKing (psqW);
		sq1 = SqFindOne  (psqW, pi1);
		sq2 = SqFindKing (psqB);
		sq3 = SqFindOne  (psqB, pi2);

		if (x_piecePawn == pi1 || x_piecePawn == pi2)
			{
			if (fInvert)
				{
				sq0 = reflect_x (sq0);
				sq1 = reflect_x (sq1);
				sq2 = reflect_x (sq2);
				sq3 = reflect_x (sq3);
				}
			return CalcIndex4B (sq0, sq1, sq2, sq3);
			}
		else
			return CalcIndex4A (sq0, sq1, sq2, sq3);
		}
	};

template <int pi1, int pi2> class T31
	{
public:
	static INDEX TB_FASTCALL IndCalc
		(
		square	*psqW,
		square	*psqB,
		square	sqEnP,
		int		fInvert
		)
		{
		square sq0, sq1, sq2, sq3;

		sq0 = SqFindKing (psqW);
		sq1 = SqFindFirst (psqW, pi1);
		if (pi1 == pi2)
			sq2 = SqFindSecond (psqW, pi2);
		else
			sq2 = SqFindFirst (psqW, pi2);
		sq3 = SqFindKing (psqB);

		if (x_piecePawn == pi1 || x_piecePawn == pi2)
			{
			if (fInvert)
				{
				sq0 = reflect_x (sq0);
				sq1 = reflect_x (sq1);
				sq2 = reflect_x (sq2);
				sq3 = reflect_x (sq3);
				}
			return CalcIndex4C (sq0, sq1, sq2, sq3);
			}
		else
			return CalcIndex4A (sq0, sq1, sq2, sq3);
		}
	};

template <int pi1, int pi2, int pi3> class T32
	{
public:
	static INDEX TB_FASTCALL IndCalc
		(
		square	*psqW,
		square	*psqB,
		square	sqEnP,
		int		fInvert
		)
		{
		square sq0, sq1, sq2, sq3, sq4;

		sq0 = SqFindKing (psqW);
		sq1 = SqFindFirst (psqW, pi1);
		if (pi1 == pi2)
			sq2 = SqFindSecond (psqW, pi2);
		else
			sq2 = SqFindFirst (psqW, pi2);
		sq3 = SqFindKing (psqB);
		sq4 = SqFindOne  (psqB, pi3);

		if (x_piecePawn == pi1 || x_piecePawn == pi2 || x_piecePawn == pi3)
			{
			if (fInvert)
				{
				sq0 = reflect_x (sq0);
				sq1 = reflect_x (sq1);
				sq2 = reflect_x (sq2);
				sq3 = reflect_x (sq3);
				sq4 = reflect_x (sq4);
				}
			if (x_piecePawn == pi3)
				return CalcIndex5B (sq0, sq1, sq2, sq3, sq4);
			else
				return CalcIndex5D (sq0, sq1, sq2, sq3, sq4);
			}
		else
			return CalcIndex5A (sq0, sq1, sq2, sq3, sq4);
		}
	};

#if defined (T41_INCLUDE)

template <int pi1, int pi2, int pi3> class T41
	{
public:
	static INDEX TB_FASTCALL IndCalc
		(
		square	*psqW,
		square	*psqB,
		square	sqEnP,
		int		fInvert
		)
		{
		square sq0, sq1, sq2, sq3, sq4;

		sq0 = SqFindKing (psqW);
		sq1 = SqFindFirst (psqW, pi1);
		sq2 = SqFindFirst (psqW, pi2);
		sq3 = SqFindFirst (psqW, pi3);
		sq4 = SqFindKing (psqB);

		if (x_piecePawn == pi1 || x_piecePawn == pi2 || x_piecePawn == pi3)
			{
			// There are pawns on the board
			if (fInvert)
				{
				sq0 = reflect_x (sq0);
				sq1 = reflect_x (sq1);
				sq2 = reflect_x (sq2);
				sq3 = reflect_x (sq3);
				sq4 = reflect_x (sq4);
				}
			return CalcIndex5C (sq0, sq1, sq2, sq3, sq4);
			}
		else	// No pawns
			return CalcIndex5A (sq0, sq1, sq2, sq3, sq4);
		}
	};

#endif

#endif	//----------------------------------------------------------------------

// All tablebases enumerated

#define tbid_kk      0
#define tbid_kpk     1
#define tbid_knk     2
#define tbid_kbk     3
#define tbid_krk     4
#define tbid_kqk     5
#define tbid_kpkp    6
#define tbid_knkp    7
#define tbid_knkn    8
#define tbid_kbkp    9
#define tbid_kbkn   10
#define tbid_kbkb   11
#define tbid_krkp   12
#define tbid_krkn   13
#define tbid_krkb   14
#define tbid_krkr   15
#define tbid_kqkp   16
#define tbid_kqkn   17
#define tbid_kqkb   18
#define tbid_kqkr   19
#define tbid_kqkq   20
#define tbid_kppk   21
#define tbid_knpk   22
#define tbid_knnk   23
#define tbid_kbpk   24
#define tbid_kbnk   25
#define tbid_kbbk   26
#define tbid_krpk   27
#define tbid_krnk   28
#define tbid_krbk   29
#define tbid_krrk   30
#define tbid_kqpk   31
#define tbid_kqnk   32
#define tbid_kqbk   33
#define tbid_kqrk   34
#define tbid_kqqk   35
#define tbid_kppkp  36
#define tbid_kppkn  37
#define tbid_kppkb  38
#define tbid_kppkr  39
#define tbid_kppkq  40
#define tbid_knpkp  41
#define tbid_knpkn  42
#define tbid_knpkb  43
#define tbid_knpkr  44
#define tbid_knpkq  45
#define tbid_knnkp  46
#define tbid_knnkn  47
#define tbid_knnkb  48
#define tbid_knnkr  49
#define tbid_knnkq  50
#define tbid_kbpkp  51
#define tbid_kbpkn  52
#define tbid_kbpkb  53
#define tbid_kbpkr  54
#define tbid_kbpkq  55
#define tbid_kbnkp  56
#define tbid_kbnkn  57
#define tbid_kbnkb  58
#define tbid_kbnkr  59
#define tbid_kbnkq  60
#define tbid_kbbkp  61
#define tbid_kbbkn  62
#define tbid_kbbkb  63
#define tbid_kbbkr  64
#define tbid_kbbkq  65
#define tbid_krpkp  66
#define tbid_krpkn  67
#define tbid_krpkb  68
#define tbid_krpkr  69
#define tbid_krpkq  70
#define tbid_krnkp  71
#define tbid_krnkn  72
#define tbid_krnkb  73
#define tbid_krnkr  74
#define tbid_krnkq  75
#define tbid_krbkp  76
#define tbid_krbkn  77
#define tbid_krbkb  78
#define tbid_krbkr  79
#define tbid_krbkq  80
#define tbid_krrkp  81
#define tbid_krrkn  82
#define tbid_krrkb  83
#define tbid_krrkr  84
#define tbid_krrkq  85
#define tbid_kqpkp  86
#define tbid_kqpkn  87
#define tbid_kqpkb  88
#define tbid_kqpkr  89
#define tbid_kqpkq  90
#define tbid_kqnkp  91
#define tbid_kqnkn  92
#define tbid_kqnkb  93
#define tbid_kqnkr  94
#define tbid_kqnkq  95
#define tbid_kqbkp  96
#define tbid_kqbkn  97
#define tbid_kqbkb  98
#define tbid_kqbkr  99
#define tbid_kqbkq 100
#define tbid_kqrkp 101
#define tbid_kqrkn 102
#define tbid_kqrkb 103
#define tbid_kqrkr 104
#define tbid_kqrkq 105
#define tbid_kqqkp 106
#define tbid_kqqkn 107
#define tbid_kqqkb 108
#define tbid_kqqkr 109
#define tbid_kqqkq 110

#if defined (T41_INCLUDE)
#define tbid_kpppk 111
#define tbid_knppk 112
#define tbid_knnpk 113
#define tbid_knnnk 114
#define tbid_kbppk 115
#define tbid_kbnpk 116
#define tbid_kbnnk 117
#define tbid_kbbpk 118
#define tbid_kbbnk 119
#define tbid_kbbbk 120
#define tbid_krppk 121
#define tbid_krnpk 122
#define tbid_krnnk 123
#define tbid_krbpk 124
#define tbid_krbnk 125
#define tbid_krbbk 126
#define tbid_krrpk 127
#define tbid_krrnk 128
#define tbid_krrbk 129
#define tbid_krrrk 130
#define tbid_kqppk 131
#define tbid_kqnpk 132
#define tbid_kqnnk 133
#define tbid_kqbpk 134
#define tbid_kqbnk 135
#define tbid_kqbbk 136
#define tbid_kqrpk 137
#define tbid_kqrnk 138
#define tbid_kqrbk 139
#define tbid_kqrrk 140
#define tbid_kqqpk 141
#define tbid_kqqnk 142
#define tbid_kqqbk 143
#define tbid_kqqrk 144
#define tbid_kqqqk 145
#endif

#if defined (T33_INCLUDE)
#if defined (T41_INCLUDE)
#define	BASE_33	145
#else
#define	BASE_33	110
#endif
#define tbid_knnknn (BASE_33 + 1)
#define tbid_kbnknn (BASE_33 + 2)
#define tbid_kbbknn (BASE_33 + 3)
#define tbid_kbbkbn (BASE_33 + 4)
#define tbid_kbbkbb (BASE_33 + 5)
#define tbid_krnknn (BASE_33 + 6)
#define tbid_krnkbb (BASE_33 + 7)
#define tbid_krbknn (BASE_33 + 8)
#define tbid_krbkbb (BASE_33 + 9)
#define tbid_krrknn (BASE_33 + 10)
#define tbid_krrkbn (BASE_33 + 11)
#define tbid_krrkbb (BASE_33 + 12)
#define tbid_krrkrn (BASE_33 + 13)
#define tbid_krrkrr (BASE_33 + 14)
#define tbid_kqnknn (BASE_33 + 15)
#define tbid_kqnkbb (BASE_33 + 16)
#define tbid_kqnkrr (BASE_33 + 17)
#define tbid_kqbknn (BASE_33 + 18)
#define tbid_kqbkbb (BASE_33 + 19)
#define tbid_kqbkrr (BASE_33 + 20)
#define tbid_kqrknn (BASE_33 + 21)
#define tbid_kqrkbb (BASE_33 + 22)
#define tbid_kqrkrr (BASE_33 + 23)
#define tbid_kqqknn (BASE_33 + 24)
#define tbid_kqqkbn (BASE_33 + 25)
#define tbid_kqqkbb (BASE_33 + 26)
#define tbid_kqqkrn (BASE_33 + 27)
#define tbid_kqqkrb (BASE_33 + 28)
#define tbid_kqqkrr (BASE_33 + 29)
#define tbid_kqqkqn (BASE_33 + 30)
#define tbid_kqqkqb (BASE_33 + 31)
#define tbid_kqqkqr (BASE_33 + 32)
#define tbid_kqqkqq (BASE_33 + 33)
#define	C33	(tbid_kqqkqq - BASE_33)
#else
#define	C33	0
#endif

#if defined (T41_INCLUDE)
#define cTb	(146 + C33)
#else
#define cTb	(111 + C33)
#endif

// Compression

#include "tbdecode.h"

#if !defined (CPUS)
#define	CPUS	1
#endif

#if defined (SMP)
static	lock_t	lockDecode;
#endif
#define TB_CRC_CHECK 0
static int cCompressed = 0;
static decode_block *rgpdbDecodeBlocks[CPUS];

// Information about tablebases

#if defined (T33_INCLUDE)
#define	MAX_TOTAL_PIECES		6	/* Maximum # of pieces on the board */
#else
#define	MAX_TOTAL_PIECES		5	/* Maximum # of pieces on the board */
#endif
#define	MAX_NON_KINGS			(MAX_TOTAL_PIECES - 2)

#if !defined (TB_DIRECTORY_SIZE)
#define	TB_DIRECTORY_SIZE		32	/* # of cache buckets */
#endif

#if !defined (PFNCALCINDEX_DECLARED)
typedef INDEX (TB_FASTCALL * PfnCalcIndex) (square *psqW, square *psqB,
										 square sqEnP, int fInverse);
#define	PFNCALCINDEX_DECLARED
#endif

struct CTbCache;

typedef struct		// Hungarian: tbcb
	{
#if defined (SMP)
	lock_t				m_lock;			// Lock on this cache bucket list
#endif
	volatile CTbCache  *m_ptbcFirst;	// Cached file chunks in LRU order
	}
	CTbCacheBucket;

typedef struct		// Hungarian: tbd
	{
	int				m_iTbId;
	int				m_fSymmetric:1;
	int				m_f16bit:1;
	PfnCalcIndex	m_rgpfnCalcIndex[2];
	char			m_rgchName[MAX_TOTAL_PIECES+1];
	INDEX			m_rgcbLength[2];
	char			*m_rgpchFileName[2];
#if defined (SMP)
	lock_t			m_rglockFiles[2];
#endif
	FILE			*m_rgfpFiles[2];
	decode_info		*m_rgpdiDecodeInfo[2];
	CTbCacheBucket	*m_prgtbcbBuckets[2];	// Cached file chunks in LRU order
	BYTE			*m_rgpbRead[2];
	}
	CTbDesc;

#define	TB(name, fSym, f16bit, funW, funB, cbW, cbB)	{ tbid_##name, fSym, f16bit, { funW, funB }, #name, { cbW, cbB } },

#define	P	x_piecePawn
#define	N	x_pieceKnight
#define	B	x_pieceBishop
#define	R	x_pieceRook
#define	Q	x_pieceQueen

CTbDesc	rgtbdDesc[cTb] =
	{
	TB (kk, true, false, NULL, NULL, 0, 0)

	TB (kpk, false, false, (T21<P>::IndCalcW), (T21<P>::IndCalcB), 81664, 84012)
	TB (knk, false, false, (T21<N>::IndCalcW), (T21<N>::IndCalcB), 26282, 28644)
	TB (kbk, false, false, (T21<B>::IndCalcW), (T21<B>::IndCalcB), 27243, 28644)
	TB (krk, false, false, (T21<R>::IndCalcW), (T21<R>::IndCalcB), 27030, 28644)
	TB (kqk, false, false, (T21<Q>::IndCalcW), (T21<Q>::IndCalcB), 25629, 28644)

	TB (kpkp, false, false, (T22<P, P>::IndCalcW), (T22<P, P>::IndCalcB), 3863492, 3863492)
	TB (knkp, false, false, (T22<N, P>::IndCalcW), (T22<N, P>::IndCalcB), 4931904, 4981504)
	TB (knkn, true,  false, (T22<N, N>::IndCalcW), (T22<N, N>::IndCalcB), 1603202, 1603202)
	TB (kbkp, false, false, (T22<B, P>::IndCalcW), (T22<B, P>::IndCalcB), 5112000, 4981504)
	TB (kbkn, false, false, (T22<B, N>::IndCalcW), (T22<B, N>::IndCalcB), 1661823, 1603202)
	TB (kbkb, true,  false, (T22<B, B>::IndCalcW), (T22<B, B>::IndCalcB), 1661823, 1661823)
	TB (krkp, false, false, (T22<R, P>::IndCalcW), (T22<R, P>::IndCalcB), 5072736, 4981504)
	TB (krkn, false, false, (T22<R, N>::IndCalcW), (T22<R, N>::IndCalcB), 1649196, 1603202)
	TB (krkb, false, false, (T22<R, B>::IndCalcW), (T22<R, B>::IndCalcB), 1649196, 1661823)
	TB (krkr, true,  false, (T22<R, R>::IndCalcW), (T22<R, R>::IndCalcB), 1649196, 1649196)
	TB (kqkp, false, false, (T22<Q, P>::IndCalcW), (T22<Q, P>::IndCalcB), 4810080, 4981504)
	TB (kqkn, false, false, (T22<Q, N>::IndCalcW), (T22<Q, N>::IndCalcB), 1563735, 1603202)
	TB (kqkb, false, false, (T22<Q, B>::IndCalcW), (T22<Q, B>::IndCalcB), 1563735, 1661823)
	TB (kqkr, false, false, (T22<Q, R>::IndCalcW), (T22<Q, R>::IndCalcB), 1563735, 1649196)
	TB (kqkq, true,  false, (T22<Q, Q>::IndCalcW), (T22<Q, Q>::IndCalcB), 1563735, 1563735)
	TB (kppk, false, false, (T31<P, P>::IndCalcW), (T31<P, P>::IndCalcB), 1806671, 1912372)
	TB (knpk, false, false, (T31<N, P>::IndCalcW), (T31<N, P>::IndCalcB), 4648581, 5124732)
	TB (knnk, false, false, (T31<N, N>::IndCalcW), (T31<N, N>::IndCalcB),  735304,  873642)
	TB (kbpk, false, false, (T31<B, P>::IndCalcW), (T31<B, P>::IndCalcB), 4817128, 5124732)
	TB (kbnk, false, false, (T31<B, N>::IndCalcW), (T31<B, N>::IndCalcB), 1550620, 1747284)
	TB (kbbk, false, false, (T31<B, B>::IndCalcW), (T31<B, B>::IndCalcB),  789885,  873642)
	TB (krpk, false, false, (T31<R, P>::IndCalcW), (T31<R, P>::IndCalcB), 4779530, 5124732)
	TB (krnk, false, false, (T31<R, N>::IndCalcW), (T31<R, N>::IndCalcB), 1538479, 1747284)
	TB (krbk, false, false, (T31<R, B>::IndCalcW), (T31<R, B>::IndCalcB), 1594560, 1747284)
	TB (krrk, false, false, (T31<R, R>::IndCalcW), (T31<R, R>::IndCalcB),  777300,  873642)
	TB (kqpk, false, false, (T31<Q, P>::IndCalcW), (T31<Q, P>::IndCalcB), 4533490, 5124732)
	TB (kqnk, false, false, (T31<Q, N>::IndCalcW), (T31<Q, N>::IndCalcB), 1459616, 1747284)
	TB (kqbk, false, false, (T31<Q, B>::IndCalcW), (T31<Q, B>::IndCalcB), 1512507, 1747284)
	TB (kqrk, false, false, (T31<Q, R>::IndCalcW), (T31<Q, R>::IndCalcB), 1500276, 1747284)
	TB (kqqk, false, false, (T31<Q, Q>::IndCalcW), (T31<Q, Q>::IndCalcB),  698739,  873642)

#if !defined (KPPKP_16BIT)
	TB (kppkp, false, false, (T32<P, P, P>::IndCalcW), (T32<P, P, P>::IndCalcB),  84219361,  89391280)
#else
	TB (kppkp, false, true,  (T32<P, P, P>::IndCalcW), (T32<P, P, P>::IndCalcB),  84219361,  89391280)
#endif
	TB (kppkn, false, false, (T32<P, P, N>::IndCalcW), (T32<P, P, N>::IndCalcB), 108400260, 115899744)
	TB (kppkb, false, false, (T32<P, P, B>::IndCalcW), (T32<P, P, B>::IndCalcB), 108400260, 120132000)
	TB (kppkr, false, false, (T32<P, P, R>::IndCalcW), (T32<P, P, R>::IndCalcB), 108400260, 119209296)
	TB (kppkq, false, false, (T32<P, P, Q>::IndCalcW), (T32<P, P, Q>::IndCalcB), 108400260, 113036880)
	TB (knpkp, false, false, (T32<N, P, P>::IndCalcW), (T32<N, P, P>::IndCalcB), 219921779, 231758952)
	TB (knpkn, false, false, (T32<N, P, N>::IndCalcW), (T32<N, P, N>::IndCalcB), 278914860, 295914240)
	TB (knpkb, false, false, (T32<N, P, B>::IndCalcW), (T32<N, P, B>::IndCalcB), 278914860, 306720000)
	TB (knpkr, false, false, (T32<N, P, R>::IndCalcW), (T32<N, P, R>::IndCalcB), 278914860, 304369920)
	TB (knpkq, false, false, (T32<N, P, Q>::IndCalcW), (T32<N, P, Q>::IndCalcB), 278914860, 288610560)
	TB (knnkp, false, false, (T32<N, N, P>::IndCalcW), (T32<N, N, P>::IndCalcB), 137991648, 149445120)
	TB (knnkn, false, false, (T32<N, N, N>::IndCalcW), (T32<N, N, N>::IndCalcB),  44118240,  48096060)
	TB (knnkb, false, false, (T32<N, N, B>::IndCalcW), (T32<N, N, B>::IndCalcB),  44118240,  49854690)
	TB (knnkr, false, false, (T32<N, N, R>::IndCalcW), (T32<N, N, R>::IndCalcB),  44118240,  49475880)
	TB (knnkq, false, false, (T32<N, N, Q>::IndCalcW), (T32<N, N, Q>::IndCalcB),  44118240,  46912050)
	TB (kbpkp, false, false, (T32<B, P, P>::IndCalcW), (T32<B, P, P>::IndCalcB), 227896016, 231758952)
	TB (kbpkn, false, false, (T32<B, P, N>::IndCalcW), (T32<B, P, N>::IndCalcB), 289027680, 295914240)
	TB (kbpkb, false, false, (T32<B, P, B>::IndCalcW), (T32<B, P, B>::IndCalcB), 289027680, 306720000)
	TB (kbpkr, false, false, (T32<B, P, R>::IndCalcW), (T32<B, P, R>::IndCalcB), 289027680, 304369920)
	TB (kbpkq, false, false, (T32<B, P, Q>::IndCalcW), (T32<B, P, Q>::IndCalcB), 289027680, 288610560)
	TB (kbnkp, false, false, (T32<B, N, P>::IndCalcW), (T32<B, N, P>::IndCalcB), 290989584, 298890240)
	TB (kbnkn, false, false, (T32<B, N, N>::IndCalcW), (T32<B, N, N>::IndCalcB),  93037200,  96192120)
	TB (kbnkb, false, false, (T32<B, N, B>::IndCalcW), (T32<B, N, B>::IndCalcB),  93037200,  99709380)
	TB (kbnkr, false, false, (T32<B, N, R>::IndCalcW), (T32<B, N, R>::IndCalcB),  93037200,  98951760)
	TB (kbnkq, false, false, (T32<B, N, Q>::IndCalcW), (T32<B, N, Q>::IndCalcB),  93037200,  93824100)
	TB (kbbkp, false, false, (T32<B, B, P>::IndCalcW), (T32<B, B, P>::IndCalcB), 148223520, 149445120)
	TB (kbbkn, false, false, (T32<B, B, N>::IndCalcW), (T32<B, B, N>::IndCalcB),  47393100,  48096060)
	TB (kbbkb, false, false, (T32<B, B, B>::IndCalcW), (T32<B, B, B>::IndCalcB),  47393100,  49854690)
	TB (kbbkr, false, false, (T32<B, B, R>::IndCalcW), (T32<B, B, R>::IndCalcB),  47393100,  49475880)
	TB (kbbkq, false, false, (T32<B, B, Q>::IndCalcW), (T32<B, B, Q>::IndCalcB),  47393100,  46912050)
	TB (krpkp, false, false, (T32<R, P, P>::IndCalcW), (T32<R, P, P>::IndCalcB), 226121876, 231758952)
	TB (krpkn, false, false, (T32<R, P, N>::IndCalcW), (T32<R, P, N>::IndCalcB), 286777440, 295914240)
	TB (krpkb, false, false, (T32<R, P, B>::IndCalcW), (T32<R, P, B>::IndCalcB), 286777440, 306720000)
	TB (krpkr, false, false, (T32<R, P, R>::IndCalcW), (T32<R, P, R>::IndCalcB), 286777440, 304369920)
	TB (krpkq, false, false, (T32<R, P, Q>::IndCalcW), (T32<R, P, Q>::IndCalcB), 286777440, 288610560)
	TB (krnkp, false, false, (T32<R, N, P>::IndCalcW), (T32<R, N, P>::IndCalcB), 288692928, 298890240)
	TB (krnkn, false, false, (T32<R, N, N>::IndCalcW), (T32<R, N, N>::IndCalcB),  92308740,  96192120)
	TB (krnkb, false, false, (T32<R, N, B>::IndCalcW), (T32<R, N, B>::IndCalcB),  92308740,  99709380)
	TB (krnkr, false, false, (T32<R, N, R>::IndCalcW), (T32<R, N, R>::IndCalcB),  92308740,  98951760)
	TB (krnkq, false, false, (T32<R, N, Q>::IndCalcW), (T32<R, N, Q>::IndCalcB),  92308740,  93824100)
	TB (krbkp, false, false, (T32<R, B, P>::IndCalcW), (T32<R, B, P>::IndCalcB), 299203200, 298890240)
	TB (krbkn, false, false, (T32<R, B, N>::IndCalcW), (T32<R, B, N>::IndCalcB),  95673600,  96192120)
	TB (krbkb, false, false, (T32<R, B, B>::IndCalcW), (T32<R, B, B>::IndCalcB),  95673600,  99709380)
	TB (krbkr, false, false, (T32<R, B, R>::IndCalcW), (T32<R, B, R>::IndCalcB),  95673600,  98951760)
	TB (krbkq, false, false, (T32<R, B, Q>::IndCalcW), (T32<R, B, Q>::IndCalcB),  95673600,  93824100)
	TB (krrkp, false, false, (T32<R, R, P>::IndCalcW), (T32<R, R, P>::IndCalcB), 145901232, 149445120)
	TB (krrkn, false, false, (T32<R, R, N>::IndCalcW), (T32<R, R, N>::IndCalcB),  46658340,  48096060)
	TB (krrkb, false, false, (T32<R, R, B>::IndCalcW), (T32<R, R, B>::IndCalcB),  46658340,  49854690)
	TB (krrkr, false, false, (T32<R, R, R>::IndCalcW), (T32<R, R, R>::IndCalcB),  46658340,  49475880)
	TB (krrkq, false, false, (T32<R, R, Q>::IndCalcW), (T32<R, R, Q>::IndCalcB),  46658340,  46912050)
	TB (kqpkp, false, false, (T32<Q, P, P>::IndCalcW), (T32<Q, P, P>::IndCalcB), 214481388, 231758952)
	TB (kqpkn, false, false, (T32<Q, P, N>::IndCalcW), (T32<Q, P, N>::IndCalcB), 272015040, 295914240)
	TB (kqpkb, false, false, (T32<Q, P, B>::IndCalcW), (T32<Q, P, B>::IndCalcB), 272015040, 306720000)
	TB (kqpkr, false, false, (T32<Q, P, R>::IndCalcW), (T32<Q, P, R>::IndCalcB), 272015040, 304369920)
	TB (kqpkq, false, false, (T32<Q, P, Q>::IndCalcW), (T32<Q, P, Q>::IndCalcB), 272015040, 288610560)
	TB (kqnkp, false, false, (T32<Q, N, P>::IndCalcW), (T32<Q, N, P>::IndCalcB), 273904512, 298890240)
	TB (kqnkn, false, false, (T32<Q, N, N>::IndCalcW), (T32<Q, N, N>::IndCalcB),  87576960,  96192120)
	TB (kqnkb, false, false, (T32<Q, N, B>::IndCalcW), (T32<Q, N, B>::IndCalcB),  87576960,  99709380)
	TB (kqnkr, false, false, (T32<Q, N, R>::IndCalcW), (T32<Q, N, R>::IndCalcB),  87576960,  98951760)
	TB (kqnkq, false, false, (T32<Q, N, Q>::IndCalcW), (T32<Q, N, Q>::IndCalcB),  87576960,  93824100)
	TB (kqbkp, false, false, (T32<Q, B, P>::IndCalcW), (T32<Q, B, P>::IndCalcB), 283818240, 298890240)
	TB (kqbkn, false, false, (T32<Q, B, N>::IndCalcW), (T32<Q, B, N>::IndCalcB),  90750420,  96192120)
	TB (kqbkb, false, false, (T32<Q, B, B>::IndCalcW), (T32<Q, B, B>::IndCalcB),  90750420,  99709380)
	TB (kqbkr, false, false, (T32<Q, B, R>::IndCalcW), (T32<Q, B, R>::IndCalcB),  90750420,  98951760)
	TB (kqbkq, false, false, (T32<Q, B, Q>::IndCalcW), (T32<Q, B, Q>::IndCalcB),  90750420,  93824100)
	TB (kqrkp, false, false, (T32<Q, R, P>::IndCalcW), (T32<Q, R, P>::IndCalcB), 281568240, 298890240)
	TB (kqrkn, false, false, (T32<Q, R, N>::IndCalcW), (T32<Q, R, N>::IndCalcB),  90038460,  96192120)
	TB (kqrkb, false, false, (T32<Q, R, B>::IndCalcW), (T32<Q, R, B>::IndCalcB),  90038460,  99709380)
	TB (kqrkr, false, false, (T32<Q, R, R>::IndCalcW), (T32<Q, R, R>::IndCalcB),  90038460,  98951760)
	TB (kqrkq, false, false, (T32<Q, R, Q>::IndCalcW), (T32<Q, R, Q>::IndCalcB),  90038460,  93824100)
	TB (kqqkp, false, false, (T32<Q, Q, P>::IndCalcW), (T32<Q, Q, P>::IndCalcB), 131170128, 149445120)
	TB (kqqkn, false, false, (T32<Q, Q, N>::IndCalcW), (T32<Q, Q, N>::IndCalcB),  41944320,  48096060)
	TB (kqqkb, false, false, (T32<Q, Q, B>::IndCalcW), (T32<Q, Q, B>::IndCalcB),  41944320,  49854690)
	TB (kqqkr, false, false, (T32<Q, Q, R>::IndCalcW), (T32<Q, Q, R>::IndCalcB),  41944320,  49475880)
	TB (kqqkq, false, false, (T32<Q, Q, Q>::IndCalcW), (T32<Q, Q, Q>::IndCalcB),  41944320,  46912050)

#if defined (T41_INCLUDE)
	TB (kpppk, false, false, (T41<P, P, P>::IndCalcW), (T41<P, P, P>::IndCalcB),  26061704,  28388716)
	TB (knppk, false, false, (T41<N, P, P>::IndCalcW), (T41<N, P, P>::IndCalcB), 102898651, 114742320)
	TB (knnpk, false, false, (T41<N, N, P>::IndCalcW), (T41<N, N, P>::IndCalcB), 130135501, 153741960)
	TB (knnnk, false, false, (T41<N, N, N>::IndCalcW), (T41<N, N, N>::IndCalcB),  13486227,  17472840)
	TB (kbppk, false, false, (T41<B, P, P>::IndCalcW), (T41<B, P, P>::IndCalcB), 106602156, 114742320)
	TB (kbnpk, false, false, (T41<B, N, P>::IndCalcW), (T41<B, N, P>::IndCalcB), 274352939, 307483920)
	TB (kbnnk, false, false, (T41<B, N, N>::IndCalcW), (T41<B, N, N>::IndCalcB),  43406294, 52418520)
	TB (kbbpk, false, false, (T41<B, B, P>::IndCalcW), (T41<B, B, P>::IndCalcB), 139715040, 153741960)
	TB (kbbnk, false, false, (T41<B, B, N>::IndCalcW), (T41<B, B, N>::IndCalcB),  44983618,  52418520)
	TB (kbbbk, false, false, (T41<B, B, B>::IndCalcW), (T41<B, B, B>::IndCalcB),  15010230,  17472840)
	TB (krppk, false, false, (T41<R, P, P>::IndCalcW), (T41<R, P, P>::IndCalcB), 105758666, 114742320)
	TB (krnpk, false, false, (T41<R, N, P>::IndCalcW), (T41<R, N, P>::IndCalcB), 272153675, 307483920)
	TB (krnnk, false, false, (T41<R, N, N>::IndCalcW), (T41<R, N, N>::IndCalcB),  43056198,  52418520)
	TB (krbpk, false, false, (T41<R, B, P>::IndCalcW), (T41<R, B, P>::IndCalcB), 281991360, 307483920)
	TB (krbnk, false, false, (T41<R, B, N>::IndCalcW), (T41<R, B, N>::IndCalcB),  90787358, 104837040)
	TB (krbbk, false, false, (T41<R, B, B>::IndCalcW), (T41<R, B, B>::IndCalcB),  46242089,  52418520)
	TB (krrpk, false, false, (T41<R, R, P>::IndCalcW), (T41<R, R, P>::IndCalcB), 137491197, 153741960)
	TB (krrnk, false, false, (T41<R, R, N>::IndCalcW), (T41<R, R, N>::IndCalcB),  44265261,  52418520)
	TB (krrbk, false, false, (T41<R, R, B>::IndCalcW), (T41<R, R, B>::IndCalcB),  45873720,  52418520)
	TB (krrrk, false, false, (T41<R, R, R>::IndCalcW), (T41<R, R, R>::IndCalcB),  14644690,  17472840)
	TB (kqppk, false, false, (T41<Q, P, P>::IndCalcW), (T41<Q, P, P>::IndCalcB), 100347220, 114742320)
	TB (kqnpk, false, false, (T41<Q, N, P>::IndCalcW), (T41<Q, N, P>::IndCalcB), 258294639, 307483920)
	TB (kqnnk, false, false, (T41<Q, N, N>::IndCalcW), (T41<Q, N, N>::IndCalcB),  40873646,  52418520)
	TB (kqbpk, false, false, (T41<Q, B, P>::IndCalcW), (T41<Q, B, P>::IndCalcB), 267576632, 307483920)
	TB (kqbnk, false, false, (T41<Q, B, N>::IndCalcW), (T41<Q, B, N>::IndCalcB),  86166717, 104837040)
	TB (kqbbk, false, false, (T41<Q, B, B>::IndCalcW), (T41<Q, B, B>::IndCalcB),  43879679,  52418520)
	TB (kqrpk, false, false, (T41<Q, R, P>::IndCalcW), (T41<Q, R, P>::IndCalcB), 265421907, 307483920)
	TB (kqrnk, false, false, (T41<Q, R, N>::IndCalcW), (T41<Q, R, N>::IndCalcB),  85470603, 104837040)
	TB (kqrbk, false, false, (T41<Q, R, B>::IndCalcW), (T41<Q, R, B>::IndCalcB),  88557959, 104837040)
	TB (kqrrk, false, false, (T41<Q, R, R>::IndCalcW), (T41<Q, R, R>::IndCalcB),  43157690,  52418520)
	TB (kqqpk, false, false, (T41<Q, Q, P>::IndCalcW), (T41<Q, Q, P>::IndCalcB), 123688859, 153741960)
	TB (kqqnk, false, false, (T41<Q, Q, N>::IndCalcW), (T41<Q, Q, N>::IndCalcB),  39840787,  52418520)
	TB (kqqbk, false, false, (T41<Q, Q, B>::IndCalcW), (T41<Q, Q, B>::IndCalcB),  41270973,  52418520)
	TB (kqqrk, false, false, (T41<Q, Q, R>::IndCalcW), (T41<Q, Q, R>::IndCalcB),  40916820,  52418520)
	TB (kqqqk, false, false, (T41<Q, Q, Q>::IndCalcW), (T41<Q, Q, Q>::IndCalcB),  12479974,  17472840)
#endif

#if defined (T33_INCLUDE)
	TB (knnknn, true,  false, (T33<N, N, N, N>::IndCalcW), (T33<N, N, N, N>::IndCalcB),  1301488080,  1301488080)
	TB (kbnknn, false, false, (T33<B, N, N, N>::IndCalcW), (T33<B, N, N, N>::IndCalcB),  2744597400u,  2602976160u)
	TB (kbbknn, false, false, (T33<B, B, N, N>::IndCalcW), (T33<B, B, N, N>::IndCalcB),  1398096450,  1301488080)
	TB (kbbkbn, false, false, (T33<B, B, B, N>::IndCalcW), (T33<B, B, B, N>::IndCalcB),  2796192900u,  2744597400u)
	TB (kbbkbb, true,  false, (T33<B, B, B, B>::IndCalcW), (T33<B, B, B, B>::IndCalcB),  1398096450,  1398096450)
	TB (krnknn, false, true,  (T33<R, N, N, N>::IndCalcW), (T33<R, N, N, N>::IndCalcB),  2723107830u,  2602976160u)
	TB (krnkbb, false, true,  (T33<R, N, B, B>::IndCalcW), (T33<R, N, B, B>::IndCalcB),  2723107830u,  2796192900u)
	TB (krbknn, false, true,  (T33<R, B, N, N>::IndCalcW), (T33<R, B, N, N>::IndCalcB),  2822371200u,  2602976160u)
	TB (krbkbb, false, false, (T33<R, B, B, B>::IndCalcW), (T33<R, B, B, B>::IndCalcB),  2822371200u,  2796192900u)
	TB (krrknn, false, false, (T33<R, R, N, N>::IndCalcW), (T33<R, R, N, N>::IndCalcB),  1376421030,  1301488080)
	TB (krrkbn, false, false, (T33<R, R, B, N>::IndCalcW), (T33<R, R, B, N>::IndCalcB),  2752842060u,  2744597400u)
	TB (krrkbb, false, false, (T33<R, R, B, B>::IndCalcW), (T33<R, R, B, B>::IndCalcB),  1376421030,  1398096450)
	TB (krrkrn, false, false,  (T33<R, R, R, N>::IndCalcW), (T33<R, R, R, N>::IndCalcB),  2752842060u,  2723107830u)
	TB (krrkrr, true,  false, (T33<R, R, R, R>::IndCalcW), (T33<R, R, R, R>::IndCalcB),  1376421030,  1376421030)
	TB (kqnknn, false, false, (T33<Q, N, N, N>::IndCalcW), (T33<Q, N, N, N>::IndCalcB),  2583520320u,  2602976160u)
	TB (kqnkbb, false, false, (T33<Q, N, B, B>::IndCalcW), (T33<Q, N, B, B>::IndCalcB),  2583520320u,  2796192900u)
	TB (kqnkrr, false, true,  (T33<Q, N, R, R>::IndCalcW), (T33<Q, N, R, R>::IndCalcB),  2583520320u,  2752842060u)
	TB (kqbknn, false, false, (T33<Q, B, N, N>::IndCalcW), (T33<Q, B, N, N>::IndCalcB),  2677137390u,  2602976160u)
	TB (kqbkbb, false, false, (T33<Q, B, B, B>::IndCalcW), (T33<Q, B, B, B>::IndCalcB),  2677137390u,  2796192900u)
	TB (kqbkrr, false, false, (T33<Q, B, R, R>::IndCalcW), (T33<Q, B, R, R>::IndCalcB),  2677137390u,  2752842060u)
	TB (kqrknn, false, false, (T33<Q, R, N, N>::IndCalcW), (T33<Q, R, N, N>::IndCalcB),  2656134570u,  2602976160u)
	TB (kqrkbb, false, false, (T33<Q, R, B, B>::IndCalcW), (T33<Q, R, B, B>::IndCalcB),  2656134570u,  2796192900u)
	TB (kqrkrr, false, false, (T33<Q, R, R, R>::IndCalcW), (T33<Q, R, R, R>::IndCalcB),  2656134570u,  2752842060u)
	TB (kqqknn, false, false, (T33<Q, Q, N, N>::IndCalcW), (T33<Q, Q, N, N>::IndCalcB),  1237357440,  1301488080)
	TB (kqqkbn, false, false, (T33<Q, Q, B, N>::IndCalcW), (T33<Q, Q, B, N>::IndCalcB),  2474714880u,  2744597400u)
	TB (kqqkbb, false, false, (T33<Q, Q, B, B>::IndCalcW), (T33<Q, Q, B, B>::IndCalcB),  1237357440,  1398096450)
	TB (kqqkrn, false, false, (T33<Q, Q, R, N>::IndCalcW), (T33<Q, Q, R, N>::IndCalcB),  2474714880u,  2723107830u)
	TB (kqqkrb, false, false, (T33<Q, Q, R, B>::IndCalcW), (T33<Q, Q, R, B>::IndCalcB),  2474714880u,  2822371200u)
	TB (kqqkrr, false, false, (T33<Q, Q, R, R>::IndCalcW), (T33<Q, Q, R, R>::IndCalcB),  1237357440,  1376421030)
	TB (kqqkqn, false, false, (T33<Q, Q, Q, N>::IndCalcW), (T33<Q, Q, Q, N>::IndCalcB),  2474714880u,  2583520320u)
	TB (kqqkqb, false, false, (T33<Q, Q, Q, B>::IndCalcW), (T33<Q, Q, Q, B>::IndCalcB),  2474714880u,  2677137390u)
	TB (kqqkqr, false, false, (T33<Q, Q, Q, R>::IndCalcW), (T33<Q, Q, Q, R>::IndCalcB),  2474714880u,  2656134570u)
	TB (kqqkqq, true,  false, (T33<Q, Q, Q, Q>::IndCalcW), (T33<Q, Q, Q, Q>::IndCalcB),  1237357440,  1237357440)
#endif
	};

#undef	P
#undef	N
#undef	B
#undef	R
#undef	Q

//	Helper structure
//	Used to classify on-board position

union CUTbReference		// Hungarian: utbr
	{
	int				m_iDesc;			// Negative if have to inverse
	int				m_cPieces;
	CUTbReference	*m_utbReference;
	};

//	Root of the search tree

static CUTbReference rgutbReference [MAX_NON_KINGS + 2];

// Convert TB name (e.g. KQKR) into set of counters

static const char *PchSetHalfCounters
	(
	int			*piCounters,
	const char	*pch
	)
	{
	memset (piCounters, 0, 5 * sizeof (int));
	while ('\0' != *pch && 'k' != *pch)
		{
		piece pi;

		pi = x_piecePawn;	// To make compiler happy
		switch (*pch)
			{
		case 'p':
			pi = x_piecePawn;
			break;
		case 'n':
			pi = x_pieceKnight;
			break;
		case 'b':
			pi = x_pieceBishop;
			break;
		case 'r':
			pi = x_pieceRook;
			break;
		case 'q':
			pi = x_pieceQueen;
			break;
		default:
			assert (0);
			}
		piCounters [pi-1] ++;
		pch ++;
		}
		return pch;
	};

static void VSetCounters
	(
	int			*piCounters,
	const char	*pch
	)
	{
	assert ('k' == *pch);
	pch = PchSetHalfCounters (piCounters, pch+1);
	assert ('k' == *pch);
	pch = PchSetHalfCounters (piCounters+5, pch+1);
	assert ('\0' == *pch);
	}

//	Following functions return TB index
//	They differ by input arguments

extern "C" int IDescFindFromCounters
	(
	int	*piCount
	)
	{
	CUTbReference *putbr = rgutbReference;

	if (piCount[0] > putbr->m_cPieces)
		goto not_found;
	putbr = putbr[1 + piCount[0]].m_utbReference;
	if (piCount[1] > putbr->m_cPieces)
		goto not_found;
	putbr = putbr[1 + piCount[1]].m_utbReference;
	if (piCount[2] > putbr->m_cPieces)
		goto not_found;
	putbr = putbr[1 + piCount[2]].m_utbReference;
	if (piCount[3] > putbr->m_cPieces)
		goto not_found;
	putbr = putbr[1 + piCount[3]].m_utbReference;
	if (piCount[4] > putbr->m_cPieces)
		goto not_found;
	putbr = putbr[1 + piCount[4]].m_utbReference;
	if (piCount[5] > putbr->m_cPieces)
		goto not_found;
	putbr = putbr[1 + piCount[5]].m_utbReference;
	if (piCount[6] > putbr->m_cPieces)
		goto not_found;
	putbr = putbr[1 + piCount[6]].m_utbReference;
	if (piCount[7] > putbr->m_cPieces)
		goto not_found;
	putbr = putbr[1 + piCount[7]].m_utbReference;
	if (piCount[8] > putbr->m_cPieces)
		goto not_found;
	putbr = putbr[1 + piCount[8]].m_utbReference;
	if (piCount[9] <= putbr->m_cPieces)
		return putbr[1 + piCount[9]].m_iDesc;
not_found:
	return 0;
	}

int	IDescFind
	(
	square	*p_piW,	// IN | Pointer to array of white pieces (king excluded)
	square	*p_piB,	// IN | Pointer to array of black pieces (king excluded)
	int		cWhite,	// IN | Counter of white pieces (king excluded)
	int		cBlack	// IN | Counter of black pieces (king excluded)
	)
	{
	int	rgiCount[10];

	// Set pieces counters
	rgiCount[0] =
	rgiCount[1] =
	rgiCount[2] =
	rgiCount[3] =
	rgiCount[4] =
	rgiCount[5] =
	rgiCount[6] =
	rgiCount[7] =
	rgiCount[8] =
	rgiCount[9] = 0;
	while (cWhite)
		{
		rgiCount[(*p_piW)-1] ++;
		p_piW ++;
		cWhite --;
		}
	while (cBlack)
		{
		rgiCount[5-1+(*p_piB)] ++;
		p_piB ++;
		cBlack --;
		}
	return IDescFindFromCounters (rgiCount);
	}

int	IDescFindByName
	(
	char	*pchName
	)
	{
	int	rgiCount[10];

	VSetCounters (rgiCount, pchName);
	return IDescFindFromCounters (rgiCount);
	}

//-----------------------------------------------------------------------------
//
//	Function used during initialization

//	Set of functions to create search table

static CUTbReference *PutbrCreateSubtable
	(
	int	cPieces,	//	IN | # of pieces ramaining on board
	int	iDepth		//	IN | Recursion depth (# of piece classes left)
	)
	{
	CUTbReference *putbr;

	putbr = (CUTbReference *) PvMalloc ((cPieces + 2) * sizeof (CUTbReference));
	putbr[0].m_cPieces = cPieces;
	if (0 == iDepth)
		{
		for (int i = 0; i <= cPieces; i ++)
			putbr[i+1].m_iDesc = 0;
		}
	else
		{
		for (int i = 0; i <= cPieces; i ++)
			putbr[i+1].m_utbReference = PutbrCreateSubtable (cPieces-i, iDepth-1);
		}
	return putbr;
	}

static bool fTbTableCreated = false;

static void VCreateEmptyTbTable (void)
	{
	if (fTbTableCreated)
		return;
	fTbTableCreated = true;
	rgutbReference[0].m_cPieces = MAX_NON_KINGS;
	for (int i = 0; i <= MAX_NON_KINGS; i ++)
		rgutbReference[i+1].m_utbReference = PutbrCreateSubtable (MAX_NON_KINGS - i, 8);
	}

// Insert TB (e.g. KQKR) into search table

static bool FRegisterHalf
	(
	int		iTb,
	int		*piCount
	)
	{
	CUTbReference	*putbr;

	putbr = rgutbReference;
	for (int i = 0; i < 9; i ++)
		{
		if (piCount[i] > putbr->m_cPieces)
			return false;
		putbr = putbr[1 + piCount[i]].m_utbReference;
		}
	if (piCount[9] > putbr->m_cPieces)
		return false;
	putbr[1 + piCount[9]].m_iDesc = iTb;
	return true;
	}

// Insert TB (both, e.g. KQKR and KRKQ) into search table

static bool FRegisterTb
	(
	CTbDesc	*ptbDesc
	)
	{
	int		rgiCount[10];
	bool	fInserted;

	VSetCounters (rgiCount, ptbDesc->m_rgchName);
	fInserted = FRegisterHalf (ptbDesc->m_iTbId, rgiCount);
	if (fInserted)
		{
		if (ptbDesc->m_fSymmetric)
			return true;
		for (int i = 0; i < 5; i ++)
			{
			int	iTemp;

			iTemp = rgiCount[i];
			rgiCount[i] = rgiCount[i+5];
			rgiCount[i+5] = iTemp;
			}
		fInserted = FRegisterHalf (-ptbDesc->m_iTbId, rgiCount);
		assert (fInserted);
		}
	return fInserted;
	}

// File mapping - Win32 code only

#if defined (_WIN32)

#include <windows.h>

static BYTE * PbMapFileForRead
	(
	char	*szName,
	HANDLE	*phFile,
	HANDLE	*phFileMapping
	)
	{
	HANDLE	hFile;
	HANDLE	hFileMapping;
	LPVOID	lpFileBase;

	hFile = CreateFile (szName, GENERIC_READ, FILE_SHARE_READ,
						NULL, OPEN_EXISTING,
						FILE_ATTRIBUTE_NORMAL | FILE_FLAG_RANDOM_ACCESS, NULL);
	if (INVALID_HANDLE_VALUE == hFile)
		{
		printf("*** Couldn't open file %s with CreateFile()\n", szName);
		exit (1);
		}
	hFileMapping = CreateFileMapping (hFile, NULL, PAGE_READONLY, 0, 0, NULL);
	if (0 == hFileMapping)
		{
		CloseHandle (hFile);
		printf ("*** Couldn't open file %s mapping with CreateFileMapping()\n", szName);
		exit (1);
		}
	lpFileBase = MapViewOfFile (hFileMapping, FILE_MAP_READ, 0, 0, 0);
	if (0 == lpFileBase)
		{
		CloseHandle (hFileMapping);
		CloseHandle (hFile);
		printf ("*** Couldn't map view of file %s with MapViewOfFile()\n", szName);
		exit (1);
		}
	if (NULL != phFile)
		*phFile = hFile;
	if (NULL != phFileMapping)
		*phFileMapping = hFileMapping;
	return (BYTE*) lpFileBase;
	}

static void	VUnmapFile
	(
	BYTE	*pbFileBase,
	HANDLE	hFile,
	HANDLE	hFileMapping
	)
	{
	BOOL fFailed;

	fFailed = (0 == UnmapViewOfFile (pbFileBase)) |
			  (0 == CloseHandle (hFileMapping)) |
			  (0 == CloseHandle (hFile));
	if (fFailed) 
		{
		printf ("*** Couldn't unmap file\n");
		exit (1);
		}
	}

#endif

//-----------------------------------------------------------------------------
//
//	TB caching

#if !defined (TB_CB_CACHE_CHUNK)
#define	TB_CB_CACHE_CHUNK			8192 /* Must be power of 2 */
#define	LOG2_TB_CB_CACHE_CHUNK		13
#endif

#define TB_CHUNK(index)             ((index) >> LOG2_TB_CB_CACHE_CHUNK)
#define TB_OFFSET(index)            ((index) % TB_CB_CACHE_CHUNK)
#define	TB_DIRECTORY_ENTRY(chunk)	((chunk) % TB_DIRECTORY_SIZE)

#define WIDE_TB_CHUNK(index)             ((index) >> (LOG2_TB_CB_CACHE_CHUNK-1))
#define WIDE_TB_OFFSET(index)            ((index) % (TB_CB_CACHE_CHUNK/2))*2

struct CTbCache			//Hungarian: tbc
	{
	volatile	int			m_iTb;
	volatile	color		m_color;
				INDEX		m_indChunk;
	volatile	CTbCache	*m_ptbcNext;	// Next element in double-linked general LRU list
	volatile	CTbCache	*m_ptbcPrev;	// Previous element in double-linked general LRU list
	volatile	CTbCache	*m_ptbcTbNext;	// Next element in double-linked cache bucket LRU list
	volatile	CTbCache	*m_ptbcTbPrev;	// Previous element in double-linked cache bucket LRU list
				BYTE		*m_pbData;
	};

static CTbCache	*ptbcTbCache;	// Cache memory
static ULONG	ctbcTbCache;	// Cache size (in entries)

static volatile CTbCache	*ptbcHead;		// Head of that list
static volatile CTbCache	*ptbcTail;		// Last element in that list
static volatile CTbCache	*ptbcFree;		// First free cache header

static INLINE void VTbCloseFile
	(
	int		iTb,
	color	side
	)
	{
	if (NULL != rgtbdDesc[iTb].m_rgfpFiles[side])
		{
		LockCache (rgtbdDesc[iTb].m_rglockFiles[side]);
		fclose (rgtbdDesc[iTb].m_rgfpFiles[side]);
		rgtbdDesc[iTb].m_rgfpFiles[side] = NULL;
		UnLockCache (rgtbdDesc[iTb].m_rglockFiles[side]);
		}
	}

extern "C" void VTbCloseFiles (void)
	{
	// Initialized?
	if (0 == ctbcTbCache)
		return;

	// Walk through TB cache and close all opened files
	for (int iTb = 1; iTb < cTb; iTb ++)
		{
		VTbCloseFile (iTb, x_colorWhite);
		VTbCloseFile (iTb, x_colorBlack);
		}
	}

void VTbClearCache (void)
	{
	CTbCache *ptbc;
	BYTE *pb;
	ULONG i;

	// Initialized?
	if (0 == ctbcTbCache)
		return;
	VTbCloseFiles();
	
	// Initialize all lists
	pb = (BYTE *) & ptbcTbCache [ctbcTbCache];
	for (i = 0, ptbc = ptbcTbCache; i < ctbcTbCache; i ++, ptbc ++)
		{
		ptbc->m_pbData = pb + i*(TB_CB_CACHE_CHUNK+32+4);
		ptbc->m_ptbcTbPrev =
		ptbc->m_ptbcTbNext =
		ptbc->m_ptbcPrev = NULL;
		ptbc->m_ptbcNext = (ptbc + 1);
		}
	ptbc[-1].m_ptbcNext = NULL;

	// Clear references from TBs
	for (int iTb = 1; iTb < cTb; iTb ++)
		{
		if (NULL != rgtbdDesc[iTb].m_prgtbcbBuckets[x_colorWhite])
			memset (rgtbdDesc[iTb].m_prgtbcbBuckets[x_colorWhite], 0,
					TB_DIRECTORY_SIZE * sizeof (CTbCacheBucket));
		if (NULL != rgtbdDesc[iTb].m_prgtbcbBuckets[x_colorBlack])
			memset (rgtbdDesc[iTb].m_prgtbcbBuckets[x_colorBlack], 0,
					TB_DIRECTORY_SIZE * sizeof (CTbCacheBucket));
		}

	// Set globals
	ptbcHead = ptbcTail = NULL;
	ptbcFree = ptbcTbCache;
	}

extern "C" int FTbSetCacheSize
	(
	void	*pv,
	ULONG	cbSize
	)
	{
	VTbCloseFiles();
	ctbcTbCache = 0;
	ptbcHead = NULL;
	if (cbSize < sizeof (CTbCache))
		return false;
	ptbcTbCache = (CTbCache*) pv;
	ctbcTbCache = cbSize / (sizeof (CTbCache) + TB_CB_CACHE_CHUNK+32+4);
	VTbClearCache();
	return true;
	}

// Table registered

#define	FRegistered(iTb, side)	(NULL != rgtbdDesc[iTb].m_rgpchFileName[rgtbdDesc[iTb].m_fSymmetric ? x_colorWhite : (side)])
extern "C" int FRegisteredFun
	(
	int		iTb,
	color	side
	)
	{
	return FRegistered (iTb, side);
	}

// Return function that calculates the necessary index:

#define PfnIndCalc(iTb, side)	(rgtbdDesc[iTb].m_rgpfnCalcIndex[side])
extern "C" PfnCalcIndex PfnIndCalcFun
	(
	int		iTb,
	color	side
	)
	{
	return PfnIndCalc (iTb, side);
	}

// Read whole file into memory

extern "C" int FReadTableToMemory
	(
	int		iTb,	// IN | Tablebase
	color	side,	// IN | Side to move
	BYTE	*pb		// IN | Either buffer or NULL
	)
	{
	char	*pszName;
	INDEX	cb;
	FILE	*fp;

	if (rgtbdDesc[iTb].m_fSymmetric)
		side = x_colorWhite;
	if (!FRegistered (iTb, side))
		return false;
	if (NULL != rgtbdDesc[iTb].m_rgpdiDecodeInfo[side])
		return false;
	pszName = rgtbdDesc[iTb].m_rgpchFileName[side];
	fp = fopen (pszName, "rb");
	if (NULL == fp)
		return false;

	// Find database size
#if defined (NEW)
	cb = rgtbdDesc[iTb].m_rgcbLength[side];
	if (0 == cb)
		{
#endif
		if (0 != fseek (fp, 0L, SEEK_END))
			{
			printf ("*** Seek in %s failed\n", pszName);
			exit (1);
			}
		cb = ftell (fp);
		if ((unsigned) -1 == cb)
			{
			printf ("*** Cannot find length of %s\n", pszName);
			exit (1);
			}
		if (0 != fseek (fp, 0L, SEEK_SET))
			{
			printf ("*** Seek in %s failed\n", pszName);
			exit (1);
			}
#if defined (NEW)
		}
#if defined (T33_INCLUDE) || defined (KPPKP_16BIT)
    else if (rgtbdDesc[iTb].m_f16bit)
        {
        if (cb * 2 / 2 != cb)   // Overflow
		    {
		    printf ("*** %s too big to read into memory\n", pszName);
		    exit (1);
		    }
        }
#endif
#endif
	
	// If buffer not specified, allocate memory for it
	if (NULL == pb)
		pb = (BYTE*) PvMalloc (cb);

	// Read file into memory
	if (cb != (INDEX) fread (pb, 1, cb, fp))
		{
		printf ("*** Read from %s failed\n", pszName);
		exit (1);
		}
	fclose (fp);

	// All done
	rgtbdDesc[iTb].m_rgpbRead[side] = pb;
	return true;
	}

#if defined (_WIN32)

// Map whole file into memory

extern "C" int FMapTableToMemory
	(
	int		iTb,	// IN | Tablebase
	color	side	// IN | Side to move
	)
	{
	char *pszName;

	if (rgtbdDesc[iTb].m_fSymmetric)
		side = x_colorWhite;
	if (!FRegistered (iTb, side))
		return false;
	if (NULL != rgtbdDesc[iTb].m_rgpdiDecodeInfo[side])
		return false;
	pszName = rgtbdDesc[iTb].m_rgpchFileName[side];
	if (NULL == rgtbdDesc[iTb].m_rgpbRead[side])
		{
		rgtbdDesc[iTb].m_rgpbRead[side] = PbMapFileForRead (pszName, NULL, NULL);
		if (fVerbose)
			printf ("%s mapped\n", pszName);
		}
	return true;
	}

// Map whole file into memory

int FMapTableToMemory
	(
	int		iTb,			// IN  | Tablebase
	color	side,			// IN  | Side to move
	HANDLE	*phFile,		// OUT | File handle will be written here
	HANDLE	*phFileMapping	// OUT | File mapping handle will be written here
	)
	{
	char *pszName;

	if (rgtbdDesc[iTb].m_fSymmetric)
		side = x_colorWhite;
	if (!FRegistered (iTb, side))
		return false;
	pszName = rgtbdDesc[iTb].m_rgpchFileName[side];
	if (NULL == rgtbdDesc[iTb].m_rgpbRead[side])
		{
		rgtbdDesc[iTb].m_rgpbRead[side] = PbMapFileForRead (pszName, phFile, phFileMapping);
		if (fVerbose)
			printf ("%s mapped\n", pszName);
		}
	return true;
	}

// Unmap whole file from memory

int FUnMapTableFromMemory
	(
	int		iTb,			// IN | Tablebase
	color	side,			// IN | Side to move
	HANDLE	hFile,			// IN | File handle will be written here
	HANDLE	hFileMapping	// IN | File mapping handle will be written here
	)
	{
	char *pszName;

	if (rgtbdDesc[iTb].m_fSymmetric)
		side = x_colorWhite;
	if (!FRegistered (iTb, side))
		return false;
	pszName = rgtbdDesc[iTb].m_rgpchFileName[side];
	if (NULL != rgtbdDesc[iTb].m_rgpbRead[side])
		{
		VUnmapFile (rgtbdDesc[iTb].m_rgpbRead[side], hFile, hFileMapping);
		rgtbdDesc[iTb].m_rgpbRead[side] = NULL;
		if (fVerbose)
			printf ("%s unmapped\n", pszName);
		}
	return true;
	}

#endif

// Probe TB - lower level (not exportable) function

static int TB_FASTCALL TbtProbeTable
	(
	int		iTb,
	color	side,
	INDEX	indChunk,
	INDEX	indInChunk
	)
	{
	CTbDesc	*ptbd;
	int iDirectory;
	volatile CTbCache	*ptbc;
	volatile CTbCache	*ptbcTbFirst;

	ptbd = & rgtbdDesc[iTb];
	iDirectory = TB_DIRECTORY_ENTRY (indChunk);

	// Head of the cache bucket LRU list
	LockCache (ptbd->m_prgtbcbBuckets[side][iDirectory].m_lock);
	ptbcTbFirst = ptbd->m_prgtbcbBuckets[side][iDirectory].m_ptbcFirst;

	// First, search entry in the cache
	for (ptbc = ptbcTbFirst; NULL != ptbc; ptbc = ptbc->m_ptbcTbNext)
		{
		if (indChunk == ptbc->m_indChunk)
			{
			// Found - move cache entry to the head of the general LRU list
			LockCache (lockLRU);
			if (ptbc != ptbcHead)
				{
				// Remove it from its current position
				ptbc->m_ptbcPrev->m_ptbcNext = ptbc->m_ptbcNext;
				if (NULL == ptbc->m_ptbcNext)
					ptbcTail = ptbc->m_ptbcPrev;
				else
					ptbc->m_ptbcNext->m_ptbcPrev = ptbc->m_ptbcPrev;
				// Insert it at the head
				ptbc->m_ptbcPrev = NULL;
				ptbc->m_ptbcNext = ptbcHead;
				ptbcHead->m_ptbcPrev = ptbc;
				ptbcHead = ptbc;
				}
			UnLockCache (lockLRU);
			// Move cache entry to the head of the cache bucket LRU list
			if (ptbc != ptbcTbFirst)
				{
				// Remove it from list
				ptbc->m_ptbcTbPrev->m_ptbcTbNext = ptbc->m_ptbcTbNext;
				if (NULL != ptbc->m_ptbcTbNext)
					ptbc->m_ptbcTbNext->m_ptbcTbPrev = ptbc->m_ptbcTbPrev;
				// Insert it at head
				ptbc->m_ptbcTbPrev = NULL;
				ptbc->m_ptbcTbNext = ptbcTbFirst;
				ptbcTbFirst->m_ptbcTbPrev = ptbc;
				ptbd->m_prgtbcbBuckets[side][iDirectory].m_ptbcFirst = ptbc;
				}
			int	tb;

			tb = (tb_t) (ptbc->m_pbData[(ULONG)indInChunk]);
			UnLockCache (ptbd->m_prgtbcbBuckets[side][iDirectory].m_lock);
			return tb;
			}
		}
	// Not in the cache - have to read it from disk.
	// I decided to write simple code - so sometimes it's possible that
	// 2 threads will simultaneously read exactly the same chunk into 2
	// different cache entries. In that case, all subsequent cache probes
	// will hit the first cache entry, so the second one will 'drift' to
	// the end of general LRU list and will be reused.

	// Unlock cache bucket, so other threads can continue execution
	UnLockCache (ptbd->m_prgtbcbBuckets[side][iDirectory].m_lock);
	// First, find cache entry we can use
	LockCache (lockLRU);
	// Get it either from a free list, or reuse last element of the LRU list
	if (NULL != ptbcFree)
		{
		ptbc = ptbcFree;
		ptbcFree = ptbc->m_ptbcNext;
		UnLockCache (lockLRU);
		}
	else
		{
		int		iTailDirectory;
		int		iTailTb;
		color	colorTail;

		assert (NULL != ptbcTail);
#if defined (SMP)
		// "Optimistic" model - assuming that there is low content
		// (not hundreds of threads)
		for (;;)
			{
			ptbc = ptbcTail;
			iTailTb = ptbc->m_iTb;
			iTailDirectory = TB_DIRECTORY_ENTRY (ptbc->m_indChunk);
			colorTail = ptbc->m_color;
			// To avoid deadlocks, have to first acquire cache buckets lock,
			// and only then general LRU lock. So, free general LRU lock and
			// acquire 2 locks in a proper order.
			UnLockCache (lockLRU);
			LockCache (rgtbdDesc[iTailTb].m_prgtbcbBuckets[colorTail][iTailDirectory].m_lock);
			LockCache (lockLRU);
			// Have structures been modified while we re-acquired locks? 
			// (to be more precise, it's Ok, if structures were modified,
			// but cache entry again become the last element of the list,
			// and TB, color, and cache bucket did not changed, so we locked
			// proper locks).
			if (ptbc == ptbcTail && ptbc->m_iTb == iTailTb &&
				ptbc->m_color == colorTail &&
				TB_DIRECTORY_ENTRY (ptbc->m_indChunk) == (unsigned) iTailDirectory)
				break;
			// Sorry - try once again...
			UnLockCache (rgtbdDesc[iTailTb].m_prgtbcbBuckets[colorTail][iTailDirectory].m_lock);
			}
#else
		ptbc = ptbcTail;
		iTailTb = ptbc->m_iTb;
		iTailDirectory = TB_DIRECTORY_ENTRY (ptbc->m_indChunk);
		colorTail = ptbc->m_color;
#endif

		// Remove cache entry from the general LRU list
		ptbcTail = ptbc->m_ptbcPrev;
		if (NULL == ptbcTail)
			ptbcHead = NULL;
		else
			ptbcTail->m_ptbcNext = NULL;
		UnLockCache (lockLRU);
		
		// Remove it from cache bucket list
		if (NULL != ptbc->m_ptbcTbNext)
			ptbc->m_ptbcTbNext->m_ptbcTbPrev = ptbc->m_ptbcTbPrev;
		if (NULL == ptbc->m_ptbcTbPrev)
			rgtbdDesc[iTailTb].m_prgtbcbBuckets[colorTail][iTailDirectory].m_ptbcFirst = ptbc->m_ptbcTbNext;
		else
			ptbc->m_ptbcTbPrev->m_ptbcTbNext = ptbc->m_ptbcTbNext;
		UnLockCache (rgtbdDesc[iTailTb].m_prgtbcbBuckets[colorTail][iTailDirectory].m_lock);
		}

	// Ok, now we have "orphan" cache entry - it's excluded from all lists,
	// so other threads will never touch it.
	ptbc->m_iTb = iTb;
	ptbc->m_color = side;
	ptbc->m_indChunk = indChunk;

	// Now read it from the disk
	FILE	*fp;
	size_t	cb;

	// First, check: is necessary file opened?
	// As files are not thread-safe, lock file
	LockCache (ptbd->m_rglockFiles[side]);
	fp = ptbd->m_rgfpFiles[side];
	if (NULL == fp)
		{
		// Not - try to open it
		fp = fopen (ptbd->m_rgpchFileName[side], "rb");
		if (NULL == fp)
			{
			// Failed. Close all the opened files and retry
			UnLockCache (ptbd->m_rglockFiles[side]);
			VTbCloseFiles ();
			LockCache (ptbd->m_rglockFiles[side]);
			// Theoretically, it's possible that other threads opened a lot of
			// files in the interval between VTbCloseFiles() and Lock(). If
			// so, we'll fail - I don't like to have one more global lock
			// especially for file open, at least not in first version.
			// Problem can happen only on systems with small limit of
			// simultaneously open files and high number of threads - unlikely
			// combination.
			fp = ptbd->m_rgfpFiles[side];
			if (NULL == fp)
				{
				fp = fopen (ptbd->m_rgpchFileName[side], "rb");
				if (NULL == fp)
					goto ERROR_LABEL;
				}
			}
		ptbd->m_rgfpFiles[side] = fp;
		}

	// File opened. Now seek and read necessary chunk
	if (NULL == ptbd->m_rgpdiDecodeInfo[side])
		{
		// Read uncompressed file
		if (fseek (fp, (long) indChunk*TB_CB_CACHE_CHUNK, SEEK_SET))
			goto ERROR_LABEL;
		cb = fread (ptbc->m_pbData, 1, TB_CB_CACHE_CHUNK, fp);
		if (cb != TB_CB_CACHE_CHUNK)
			{
			// Could not read TB_CB_CACHE_CHUNK - check for error
			if (ferror (fp) || ((ULONG) -1 == cb))
				goto ERROR_LABEL;
			}
		assert (cb > indChunk);
		UnLockCache (ptbd->m_rglockFiles[side]);
		}
	else
		{
		// Read compressed file
		int	fWasError;
		decode_block	*block;
		decode_info		*info = ptbd->m_rgpdiDecodeInfo[side];

#if defined (SMP)
		// Find free decode block
		decode_block	**pBlock;

		LockCache (lockDecode);
		pBlock = rgpdbDecodeBlocks;
		while (NULL == *pBlock)
			pBlock ++;
		block = *pBlock;
		*pBlock = NULL;
		UnLockCache (lockDecode);
#else
		block = rgpdbDecodeBlocks[0];
#endif

		// Initialize decode block and read chunk
		fWasError = 0 != comp_init_block (block, TB_CB_CACHE_CHUNK, ptbc->m_pbData) ||
					0 != comp_read_block (block, info, fp, indChunk);
		
		// Release lock on file, so other threads can proceed with that file
		UnLockCache (ptbd->m_rglockFiles[side]);

		// Decompress chunk
		if (!fWasError)
			fWasError |= (0 != comp_decode_and_check_crc (block, info, block->orig.size, TB_CRC_CHECK));

		// Release block
#if defined (SMP)
		LockCache (lockDecode);
		*pBlock = block;
		UnLockCache (lockDecode);
#endif

		// Read Ok?
		if (fWasError)
			goto ERROR_LABEL_2;
		}

	// Read - now acquire locks and insert cache entry in both lists
	LockCache (ptbd->m_prgtbcbBuckets[side][iDirectory].m_lock);
	LockCache (lockLRU);

	// Insert cache entry into general LRU list
	ptbc->m_ptbcPrev = NULL;
	ptbc->m_ptbcNext = ptbcHead;
	if (NULL == ptbcHead)
		ptbcTail = ptbc;
	else
		ptbcHead->m_ptbcPrev = ptbc;
	ptbcHead = ptbc;

	// Insert cache entry into cache bucket LRU list
	ptbc->m_ptbcTbPrev = NULL;
	ptbc->m_ptbcTbNext = ptbd->m_prgtbcbBuckets[side][iDirectory].m_ptbcFirst;
	if (NULL != ptbc->m_ptbcTbNext)
		ptbc->m_ptbcTbNext->m_ptbcTbPrev = ptbc;
	ptbd->m_prgtbcbBuckets[side][iDirectory].m_ptbcFirst = ptbc;

	// All done
	int tb;

	tb = (tb_t) (ptbc->m_pbData[indInChunk]);
	// Release locks
	UnLockCache (ptbd->m_prgtbcbBuckets[side][iDirectory].m_lock);
	UnLockCache (lockLRU);
	return tb;

	// I/O error. Here I don't want to halt the program, because that can
	// happen in the middle of the important game. Just return failure.
ERROR_LABEL:
	UnLockCache (ptbd->m_rglockFiles[side]);
ERROR_LABEL_2:
	LockCache (lockLRU);
	ptbd->m_rgpchFileName[side] = NULL;
	ptbc->m_ptbcNext = ptbcFree;
	ptbcFree = ptbc;
	UnLockCache (lockLRU);
	return L_bev_broken;
	}

// Probe TB - upper level function

static int	TB_FASTCALL TbtProbeTable
	(
	int		iTb,
	color	side,
	INDEX	indOffset
	)
	{
	CTbDesc	*ptbd;

	assert (iTb > 0 && iTb < cTb);
	ptbd = & rgtbdDesc[iTb];
	if (ptbd->m_fSymmetric)
		side = x_colorWhite;

	// It's better for offset be smaller than TB size
	assert (!FRegistered (iTb, side) || indOffset < ptbd->m_rgcbLength[side]);

	// Entire file read/mapped to memory?
	if (NULL != ptbd->m_rgpbRead[side])
		return (tb_t) ptbd->m_rgpbRead[side][indOffset];

	// Cache initialized? TB registered?
	if (0 == ctbcTbCache || NULL == ptbd->m_prgtbcbBuckets[side])
		return bev_broken;

#if defined (T33_INCLUDE) || defined (KPPKP_16BIT)
    if (ptbd->m_f16bit)
        return bev_broken;
#endif

	int tb;

	tb = TbtProbeTable (iTb, side, TB_CHUNK (indOffset), TB_OFFSET (indOffset));
	return (L_bev_broken == tb) ? bev_broken : (tb_t) tb;
	}

// 16-bit version (recommended)

#define FOutOfBound(iTb, side, indOffset)\
		(tbid_kppkp == iTb && x_colorBlack == side &&\
		 (indOffset == 0x0362BC7C || indOffset == 0x0362DE44 || indOffset == 0x03637648 ||\
		  indOffset == 0x03639810 || indOffset == 0x038D4F29 || indOffset == 0x040A2CAB ||\
		  indOffset == 0x043C778C))

extern "C" int TB_FASTCALL L_TbtProbeTable
	(
	int		iTb,
	color	side,
	INDEX	indOffset
	)
	{
	int	tbtScore;
	CTbDesc	*ptbd;

	assert (iTb > 0 && iTb < cTb);
	ptbd = & rgtbdDesc[iTb];
	if (ptbd->m_fSymmetric)
		side = x_colorWhite;

	// Entire file read/mapped to memory?
	if (NULL != ptbd->m_rgpbRead[side])
        {
#if defined (KPPKP_16BIT)
    	if (!ptbd->m_f16bit)
			{
			tbtScore = (tb_t) ptbd->m_rgpbRead[side][indOffset];
	    	return S_to_L (tbtScore);
			}
        else
	    	return (((int) (((signed char) ptbd->m_rgpbRead[side][indOffset*2+1]))) << 8) +
                    ptbd->m_rgpbRead[side][indOffset*2];
#elif defined (T33_INCLUDE)
    	if (!ptbd->m_f16bit)
            {
		    if (FOutOfBound (iTb, side, indOffset))
			    return -32639;
            else
				{
				tbtScore = (tb_t) ptbd->m_rgpbRead[side][indOffset];
	    	    return S_to_L (tbtScore);
				}
            }
        else
	    	return (((int) (((signed char) ptbd->m_rgpbRead[side][indOffset*2+1]))) << 8) +
                    ptbd->m_rgpbRead[side][indOffset*2];
#else
		if (FOutOfBound (iTb, side, indOffset))
			return -32639;
        else
			{
			tbtScore = (tb_t) ptbd->m_rgpbRead[side][indOffset];
	    	return S_to_L (tbtScore);
			}
#endif
        }

	// Cache initialized? TB registered?
	if (0 == ctbcTbCache || NULL == ptbd->m_prgtbcbBuckets[side])
		return L_bev_broken;

#if defined (T33_INCLUDE)
	if (ptbd->m_f16bit)
		{
		// Inefficient, but very simple, code
		int	iLo;
		int	iHi;
//		INDEX	indChunk;
//		INDEX	indInChunk;
		
		iLo = TbtProbeTable (iTb, side, WIDE_TB_CHUNK (indOffset), WIDE_TB_OFFSET (indOffset));
		iHi = TbtProbeTable (iTb, side, WIDE_TB_CHUNK (indOffset), WIDE_TB_OFFSET (indOffset)+1);
        tbtScore = (L_bev_broken == iLo || L_bev_broken == iHi) ? L_bev_broken : ((iHi << 8) + (iLo & 0xFF));
		}
	else
		{
#if !defined (KPPKP_16BIT)
		if (FOutOfBound (iTb, side, indOffset))
			return -32639;
#endif
		tbtScore = TbtProbeTable (iTb, side, TB_CHUNK (indOffset), TB_OFFSET (indOffset));
		tbtScore = L_bev_broken == tbtScore ? L_bev_broken : S_to_L (tbtScore);
		}
#elif !defined (KPPKP_16BIT)
	if (FOutOfBound (iTb, side, indOffset))
		return -32639;
	tbtScore = TbtProbeTable (iTb, side, TB_CHUNK (indOffset), TB_OFFSET (indOffset));
	tbtScore = L_bev_broken == tbtScore ? L_bev_broken : S_to_L (tbtScore);
#else
	if (tbid_kppkp != iTb)
		{
		// All tables but kppkp are 8-bit tables
		tbtScore = TbtProbeTable (iTb, side, TB_CHUNK (indOffset), TB_OFFSET (indOffset));
		tbtScore = L_bev_broken == tbtScore ? L_bev_broken : S_to_L (tbtScore);
		}
	else
		{
		// Special handling of kppkp - it's 16-bit table
		// Inefficient, but very simple, code
		int	iLo;
		int	iHi;
		
		iLo = TbtProbeTable (iTb, side, WIDE_TB_CHUNK (indOffset), WIDE_TB_OFFSET (indOffset));
		iHi = TbtProbeTable (iTb, side, WIDE_TB_CHUNK (indOffset), WIDE_TB_OFFSET (indOffset)+1);
        tbtScore = (L_bev_broken == iLo || L_bev_broken == iHi) ? L_bev_broken : ((iHi << 8) + (iLo & 0xFF));
		}
#endif
	return tbtScore;
	}

//-----------------------------------------------------------------------------
//
//	Global initialization

int FCheckExistance
	(
	char	*pszPath,
	int		iTb,
	color	side
	)
	{
	FILE			*fp;
	char			*pchCopy;
	const char		*pchExt = PchExt (side);
	char			rgchTbName[256];
	CTbCacheBucket	*prgtbcbBuckets;
	INDEX			cb;
	decode_info		*comp_info = NULL;

	if (FRegistered (iTb, side) || NULL != rgtbdDesc[iTb].m_rgpbRead[side])
		return true;

	strcpy (rgchTbName, pszPath);
	if (0 != pszPath[0])
		{
#if defined (_WIN32)
		strcat (rgchTbName, "\\");
#elif defined (__MWERKS__)
		strcat (rgchTbName, ":");
#else
		strcat (rgchTbName, "/");
#endif
		}
	strcat (rgchTbName, rgtbdDesc[iTb].m_rgchName);
	strcat (rgchTbName, pchExt);
	fp = fopen (rgchTbName, "rb");
#if !defined (NEW) && !defined (_WIN32)
	// For case-sensitive systems, have to try once more
	if (NULL == fp)
		{
		for (int i = strchr(rgchTbName,'.')-rgchTbName-1; i>=0 && isalpha(rgchTbName[i]); i--)
			rgchTbName[i] = toupper (rgchTbName[i]);
		fp = fopen (rgchTbName, "rb");
		}
#endif
	if (NULL != fp)
		{
		// Found uncompressed table
		if (rgtbdDesc[iTb].m_f16bit) // Do not check the length for 16-bit file
			cb = rgtbdDesc[iTb].m_rgcbLength[side];
		else
            {
            if (0 != fseek (fp, 0L, SEEK_END))
			    {
			    printf ("*** Seek in %s failed\n", rgchTbName);
			    exit (1);
			    }
		    cb = (INDEX) ftell (fp);
#if defined (NEW)
		    if (0 != rgtbdDesc[iTb].m_rgcbLength[side] && cb != rgtbdDesc[iTb].m_rgcbLength[side])
			    {
			    printf ("*** %s corrupted\n", rgchTbName);
			    exit (1);
			    }
            }
#endif
		}
	else
		{
		// Check for compressed table.
		// First, check for kxykz.nb?.emd
		strcat (rgchTbName, ".emd");
		fp = fopen (rgchTbName, "rb");
		if (NULL == fp)
			{
			// Check for kxykz_nb?.emd
			rgchTbName [strlen(rgchTbName)-8] = '_';
			fp = fopen (rgchTbName, "rb");
			}
		if (NULL == fp)
			{
			// Check for kxykznb?.emd (8+3 format)
			int	cch;
			
			cch = (int) strlen (rgchTbName);
			memmove (rgchTbName+cch-8, rgchTbName+cch-7, 8);
			fp = fopen (rgchTbName, "rb");
			if (NULL == fp)
				return false;
			}
		cCompressed ++;
		int iResult = comp_open_file (&comp_info, fp, TB_CRC_CHECK);
		if (0 != iResult)
			{
			printf ("*** Unable to read %s - ", rgchTbName);
			switch (iResult & 0xFF)
				{
			case COMP_ERR_READ:
				printf ("read error\n");
				break;
			case COMP_ERR_NOMEM:
				printf ("out of memory\n");
				break;
			case COMP_ERR_BROKEN:
				printf ("file broken\n");
				break;
			default:
				printf ("error %d\n", iResult);
				break;
				}
			exit (1);
			}
		if (comp_info->block_size != TB_CB_CACHE_CHUNK)
			{
			printf ("*** %s: Unsupported block size %d\n", rgchTbName, comp_info->block_size);
			exit (1);
			}
        if (rgtbdDesc[iTb].m_f16bit)
            {
    		cb = comp_info->block_size/2*(comp_info->n_blk-1) + comp_info->last_block_size/2;
#if defined (NEW)
	    	if (0 != rgtbdDesc[iTb].m_rgcbLength[side] && cb != rgtbdDesc[iTb].m_rgcbLength[side])
		    	{
			    printf ("*** %s corrupted\n", rgchTbName);
    			exit (1);
	    		}
#endif
			}
		else
            {
    		cb = comp_info->block_size*(comp_info->n_blk-1) + comp_info->last_block_size;
#if defined (NEW)
	    	if (0 != rgtbdDesc[iTb].m_rgcbLength[side] && cb != rgtbdDesc[iTb].m_rgcbLength[side])
		    	{
			    printf ("*** %s corrupted\n", rgchTbName);
    			exit (1);
	    		}
#endif
            }
		}
   	rgtbdDesc[iTb].m_rgcbLength[side] = cb;
	fclose (fp);
	if (FRegisterTb (& (rgtbdDesc[iTb])))
		{
		pchCopy = (char*) PvMalloc (strlen(rgchTbName)+1);
		strcpy (pchCopy, rgchTbName);
		rgtbdDesc[iTb].m_rgpchFileName[side] = pchCopy;
		prgtbcbBuckets = (CTbCacheBucket*) PvMalloc (TB_DIRECTORY_SIZE*sizeof(CTbCacheBucket));
		memset (prgtbcbBuckets, 0, TB_DIRECTORY_SIZE*sizeof(CTbCacheBucket));
#if defined (SMP)
		for (int i = 0; i < TB_DIRECTORY_SIZE; i ++)
			LockInit (prgtbcbBuckets[i].m_lock);
#endif
		rgtbdDesc[iTb].m_prgtbcbBuckets[side] = prgtbcbBuckets;
		rgtbdDesc[iTb].m_rgpdiDecodeInfo[side] = comp_info;
		if (fVerbose)
			printf ("%s registered\n", pchCopy);
		return true;
		}
	else
		{
		printf ("*** Unable to register %s\n", rgchTbName);
		exit (1);
		}
	return false;
	}

extern "C" int IInitializeTb
	(
	char *pszPath
	)
	{
	char	szTemp[1024];
	color	sd;
	int		iTb, iMaxTb, i;

	cbAllocated = cbEGTBCompBytes = 0;
	// If there are open files, close those
	VTbCloseFiles ();
#if defined (SMP)
	// Init all locks
	LockInit (lockLRU);
	LockInit (lockDecode);
	for (iTb = 1; iTb < cTb; iTb ++)
		{
		LockInit (rgtbdDesc[iTb].m_rglockFiles[x_colorWhite]);
		LockInit (rgtbdDesc[iTb].m_rglockFiles[x_colorBlack]);
		}
#endif
#if defined (NEW)
	// Create enumeration tables
	VInitEnumerations ();
#endif
	// Create empty TB search table
	VCreateEmptyTbTable ();
	// Free memory from TB table
	for (iTb = 1; iTb < cTb; iTb ++)
		{
		for (sd = x_colorWhite; sd <= x_colorBlack; sd = (color) (sd + 1))
			{
			if (NULL != rgtbdDesc[iTb].m_prgtbcbBuckets[sd] &&
				NULL == rgtbdDesc[iTb].m_rgpbRead[sd])
				{
				free (rgtbdDesc[iTb].m_prgtbcbBuckets[sd]);
				rgtbdDesc[iTb].m_prgtbcbBuckets[sd] = NULL;
				}
			if (NULL != rgtbdDesc[iTb].m_rgpchFileName[sd])
				{
				free (rgtbdDesc[iTb].m_rgpchFileName[sd]);
				rgtbdDesc[iTb].m_rgpchFileName[sd] = NULL;
				}
			if (NULL != rgtbdDesc[iTb].m_rgpdiDecodeInfo[sd])
				{
				free (rgtbdDesc[iTb].m_rgpdiDecodeInfo[sd]);
				rgtbdDesc[iTb].m_rgpdiDecodeInfo[sd] = NULL;
				}
			}
		}
	// Free compressed blocks
	for (i = 0; i < CPUS; i ++)
		{
		if (NULL != rgpdbDecodeBlocks[i])
			{
			free (rgpdbDecodeBlocks[i]);
			rgpdbDecodeBlocks[i] = NULL;
			}
		}
	// Search for existing TBs
	iMaxTb = 0;
	for (;;)
		{
		for (i = 0; pszPath[i] != '\0' && pszPath[i] != ',' && pszPath[i] != ';'
#if !defined (_WIN32) && !defined (__MWERKS__)
			 && pszPath[i] != ':'
#endif
			 ; i ++)
			{
			szTemp[i] = pszPath[i];
			}
		szTemp[i] = '\0';
		for (iTb = 1; iTb < cTb; iTb ++)
			{
			if (FCheckExistance (szTemp, iTb, x_colorWhite))
				{
				if (iTb > iMaxTb)
					iMaxTb = iTb;
				}
		if (! rgtbdDesc[iTb].m_fSymmetric && FCheckExistance (szTemp, iTb, x_colorBlack))
				{
				if (iTb > iMaxTb)
					iMaxTb = iTb;
				}
			}
		pszPath += i;
		if ('\0' == *pszPath)
			break;
		pszPath ++;
		}
	
	// If there were compressed files, have to allocate buffer(s)
	if (0 != cCompressed)
		{
		for (i = 0; i < CPUS; i ++)
			{
			int iResult = comp_alloc_block (&rgpdbDecodeBlocks[i], TB_CB_CACHE_CHUNK);
			if (0 != iResult)
				{
				printf ("*** Cannot allocate decode block: error code %d\n", iResult);
				exit (1);
				}
			}
		if (fVerbose)
			printf ("Allocated %dKb for decompression tables, indices, and buffers.\n",
					(cbEGTBCompBytes+1023)/1024);
		}

	// All done!
#if defined T33_INCLUDE
	if (iMaxTb >= tbid_knnknn)
		return 6;
#endif
	if (iMaxTb >= tbid_kppkp)
		return 5;
	if (iMaxTb >= tbid_kpkp)
		return 4;
	if (iMaxTb >= tbid_kpk)
		return 3;
	return 0;
	}