/* eval-values.c - eval parameters * * Copyright (C) 2024 Bruno Raoult ("br") * Licensed under the GNU General Public License v3.0 or later. * Some rights reserved. See COPYING. * * You should have received a copy of the GNU General Public License along with this * program. If not, see . * * SPDX-License-Identifier: GPL-3.0-or-later * */ #include #include #include "chessdefs.h" #include "position.h" #include "piece.h" #include "eval-defs.h" //#include "eval-simple.h" //#include "eval.h" /* eval parameters definition. */ static const struct ev_params ev_param_def [EV_PARAMS_NB] = { /* default min max setable string */ [WT_MAT] = { 100, 0, 400, true, "material weight" }, [WT_PST] = { 100, 0, 400, true, "pst weight" }, }; void param_init() { for (int i = 0; i < EV_PARAMS_NB; ++i) parameters[i] = ev_param_def[i].init; } int param_find_name(char *name) { for (int i = 0; i < EV_PARAMS_NB; ++i) if (!strcmp(ev_param_def[i].name, name)) return i; return -1; } char *param_name(const int num) { return ev_param_def[num].name; } eval_t param_default(const int num) { return ev_param_def[num].init; } eval_t param_min(const int num) { return ev_param_def[num].min; } eval_t param_max(const int num) { return ev_param_def[num].max; } /* parameters in use */ eval_t parameters[EV_PARAMS_NB]; void param_set(int num, eval_t val) { if (num >= 0 && num < EV_PARAMS_NB && val >= param_min(num) && val <= param_max(num)) { parameters[num] = val; } } /* * Piece-square tables. For easier reading, they are defined for black side: * * { * A8 .... H8 * .......... * .......... * A1 .... H1 * } */ static const struct pst { char *name; /* one word only, no spaces */ int val[PIECE_TYPE_NB][PHASE_NB][SQUARE_NB]; /* MG then EG */ } pst_defs[PST_NB] = { [PST_ROFCHADE] = { /* * rofchade: * https://www.talkchess.com/forum3/viewtopic.php?f=2&t=68311&start=19 */ "rofchade", { /* A8 ..... H8 * ........... * A1 ..... H1 */ [PAWN] = { { /* midgame */ + 0, 0, 0, 0, 0, 0, 0, 0, +98, 134, 61, 95, 68, 126, 34, -11, - 6, 7, 26, 31, 65, 56, 25, -20, -14, 13, 6, 21, 23, 12, 17, -23, -27, -2, -5, 12, 17, 6, 10, -25, -26, -4, -4, -10, 3, 3, 33, -12, -35, -1, -20, -23, -15, 24, 38, -22, + 0, 0, 0, 0, 0, 0, 0, 0, }, { /* endgame */ + 0, 0, 0, 0, 0, 0, 0, 0, 178, 173, 158, 134, 147, 132, 165, 187, +94, 100, 85, 67, 56, 53, 82, 84, +32, 24, 13, 5, -2, 4, 17, 17, +13, 9, -3, -7, -7, -8, 3, -1, + 4, 7, -6, 1, 0, -5, -1, -8, +13, 8, 8, 10, 13, 0, 2, -7, + 0, 0, 0, 0, 0, 0, 0, 0, } }, [KNIGHT] = { { /* midgame */ -167, -89, -34, -49, 61, -97, -15, -107, -73, -41, 72, 36, 23, 62, 7, -17, -47, 60, 37, 65, 84, 129, 73, 44, -9, 17, 19, 53, 37, 69, 18, 22, -13, 4, 16, 13, 28, 19, 21, -8, -23, -9, 12, 10, 19, 17, 25, -16, -29, -53, -12, -3, -1, 18, -14, -19, -105, -21, -58, -33, -17, -28, -19, -23, }, { /* endgame */ -58, -38, -13, -28, -31, -27, -63, -99, -25, -8, -25, -2, -9, -25, -24, -52, -24, -20, 10, 9, -1, -9, -19, -41, -17, 3, 22, 22, 22, 11, 8, -18, -18, -6, 16, 25, 16, 17, 4, -18, -23, -3, -1, 15, 10, -3, -20, -22, -42, -20, -10, -5, -2, -20, -23, -44, -29, -51, -23, -15, -22, -18, -50, -64, } }, [BISHOP] = { { /* midgame */ -29, 4, -82, -37, -25, -42, 7, -8, -26, 16, -18, -13, 30, 59, 18, -47, -16, 37, 43, 40, 35, 50, 37, -2, - 4, 5, 19, 50, 37, 37, 7, -2, - 6, 13, 13, 26, 34, 12, 10, 4, + 0, 15, 15, 15, 14, 27, 18, 10, + 4, 15, 16, 0, 7, 21, 33, 1, -33, -3, -14, -21, -13, -12, -39, -21, }, { /* endgame */ -14, -21, -11, -8, -7, -9, -17, -24, - 8, -4, 7, -12, -3, -13, -4, -14, + 2, -8, 0, -1, -2, 6, 0, 4, - 3, 9, 12, 9, 14, 10, 3, 2, - 6, 3, 13, 19, 7, 10, -3, -9, -12, -3, 8, 10, 13, 3, -7, -15, -14, -18, -7, -1, 4, -9, -15, -27, -23, -9, -23, -5, -9, -16, -5, -17, }, }, [ROOK] = { { /* midgame */ +32, 42, 32, 51, 63, 9, 31, 43, +27, 32, 58, 62, 80, 67, 26, 44, - 5, 19, 26, 36, 17, 45, 61, 16, -24, -11, 7, 26, 24, 35, -8, -20, -36, -26, -12, -1, 9, -7, 6, -23, -45, -25, -16, -17, 3, 0, -5, -33, -44, -16, -20, -9, -1, 11, -6, -71, -19, -13, 1, 17, 16, 7, -37, -26, }, { /* endgame */ 13, 10, 18, 15, 12, 12, 8, 5, 11, 13, 13, 11, -3, 3, 8, 3, +7, 7, 7, 5, 4, -3, -5, -3, +4, 3, 13, 1, 2, 1, -1, 2, +3, 5, 8, 4, -5, -6, -8, -11, -4, 0, -5, -1, -7, -12, -8, -16, -6, -6, 0, 2, -9, -9, -11, -3, -9, 2, 3, -1, -5, -13, 4, -20, }, }, [QUEEN] = { { /* midgame */ -28, 0, 29, 12, 59, 44, 43, 45, -24, -39, -5, 1, -16, 57, 28, 54, -13, -17, 7, 8, 29, 56, 47, 57, -27, -27, -16, -16, -1, 17, -2, 1, - 9, -26, -9, -10, -2, -4, 3, -3, -14, 2, -11, -2, -5, 2, 14, 5, -35, -8, 11, 2, 8, 15, -3, 1, - 1, -18, -9, 10, -15, -25, -31, -50, }, { /* endgame */ - 9, 22, 22, 27, 27, 19, 10, 20, -17, 20, 32, 41, 58, 25, 30, 0, -20, 6, 9, 49, 47, 35, 19, 9, + 3, 22, 24, 45, 57, 40, 57, 36, -18, 28, 19, 47, 31, 34, 39, 23, -16, -27, 15, 6, 9, 17, 10, 5, -22, -23, -30, -16, -16, -23, -36, -32, -33, -28, -22, -43, -5, -32, -20, -41, }, }, [KING] = { /* midgame */ { -65, 23, 16, -15, -56, -34, 2, 13, +29, -1, -20, -7, -8, -4, -38, -29, - 9, 24, 2, -16, -20, 6, 22, -22, -17, -20, -12, -27, -30, -25, -14, -36, -49, -1, -27, -39, -46, -44, -33, -51, -14, -14, -22, -46, -44, -30, -15, -27, + 1, 7, -8, -64, -43, -16, 9, 8, -15, 36, 12, -54, 8, -28, 24, 14, }, { /* endgame */ -74, -35, -18, -18, -11, 15, 4, -17, -12, 17, 14, 17, 17, 38, 23, 11, +10, 17, 23, 15, 20, 45, 44, 13, - 8, 22, 24, 27, 26, 33, 26, 3, -18, -4, 21, 24, 27, 23, 9, -11, -19, -3, 11, 21, 23, 16, 7, -9, -27, -11, 4, 13, 14, 4, -5, -17, -53, -34, -21, -11, -28, -14, -24, -43 } } } }, /* rofchade end */ [PST_CPW] = { /* * CPW: * https://www.chessprogramming.org/Simplified_Evaluation_Function * Note: ≠ https://github.com/nescitus/cpw-engine */ "cpw", { /* A8 ..... H8 * ........... * A1 ..... H1 */ [PAWN] = { { /* H1 H8 */ /* midgame */ +0, 0, 0, 0, 0, 0, 0, 0, 50, 50, 50, 50, 50, 50, 50, 50, 10, 10, 20, 30, 30, 20, 10, 10, +5, 5, 10, 25, 25, 10, 5, 5, +0, 0, 0, 20, 20, 0, 0, 0, +5, -5, -10, 0, 0, -10, -5, 5, +5, 10, 10, -20, -20, 10, 10, 5, +0, 0, 0, 0, 0, 0, 0, 0, }, { /* endgame */ +0, 0, 0, 0, 0, 0, 0, 0, 50, 50, 50, 50, 50, 50, 50, 50, 10, 10, 20, 30, 30, 20, 10, 10, +5, 5, 10, 25, 25, 10, 5, 5, +0, 0, 0, 20, 20, 0, 0, 0, +5, -5, -10, 0, 0, -10, -5, 5, +5, 10, 10, -20, -20, 10, 10, 5, +0, 0, 0, 0, 0, 0, 0, 0, }, }, [KNIGHT] = { { /* midgame */ -50, -40, -30, -30, -30, -30, -40, -50, -40, -20, 0, 0, 0, 0, -20, -40, -30, 0, 10, 15, 15, 10, 0, -30, -30, 5, 15, 20, 20, 15, 5, -30, -30, 0, 15, 20, 20, 15, 0, -30, -30, 5, 10, 15, 15, 10, 5, -30, -40, -20, 0, 5, 5, 0, -20, -40, -50, -40, -30, -30, -30, -30, -40, -50 }, { /* endgame */ -50, -40, -30, -30, -30, -30, -40, -50, -40, -20, 0, 0, 0, 0, -20, -40, -30, 0, 10, 15, 15, 10, 0, -30, -30, 5, 15, 20, 20, 15, 5, -30, -30, 0, 15, 20, 20, 15, 0, -30, -30, 5, 10, 15, 15, 10, 5, -30, -40, -20, 0, 5, 5, 0, -20, -40, -50, -40, -30, -30, -30, -30, -40, -50 }, }, [BISHOP] = { { /* midgame */ -20, -10, -10, -10, -10, -10, -10, -20, -10, 0, 0, 0, 0, 0, 0, -10, -10, 0, 5, 10, 10, 5, 0, -10, -10, 5, 5, 10, 10, 5, 5, -10, -10, 0, 10, 10, 10, 10, 0, -10, -10, 10, 10, 10, 10, 10, 10, -10, -10, 5, 0, 0, 0, 0, 5, -10, -20, -10, -10, -10, -10, -10, -10, -20, }, { /* endgame */ -20, -10, -10, -10, -10, -10, -10, -20, -10, 0, 0, 0, 0, 0, 0, -10, -10, 0, 5, 10, 10, 5, 0, -10, -10, 5, 5, 10, 10, 5, 5, -10, -10, 0, 10, 10, 10, 10, 0, -10, -10, 10, 10, 10, 10, 10, 10, -10, -10, 5, 0, 0, 0, 0, 5, -10, -20, -10, -10, -10, -10, -10, -10, -20, }, }, [ROOK] = { { /* midgame */ +0, 0, 0, 0, 0, 0, 0, 0, +5, 10, 10, 10, 10, 10, 10, 5, -5, 0, 0, 0, 0, 0, 0, -5, -5, 0, 0, 0, 0, 0, 0, -5, -5, 0, 0, 0, 0, 0, 0, -5, -5, 0, 0, 0, 0, 0, 0, -5, -5, 0, 0, 0, 0, 0, 0, -5, +0, 0, 0, 5, 5, 0, 0, 0, }, { /* endgame */ +0, 0, 0, 0, 0, 0, 0, 0, +5, 10, 10, 10, 10, 10, 10, 5, -5, 0, 0, 0, 0, 0, 0, -5, -5, 0, 0, 0, 0, 0, 0, -5, -5, 0, 0, 0, 0, 0, 0, -5, -5, 0, 0, 0, 0, 0, 0, -5, -5, 0, 0, 0, 0, 0, 0, -5, +0, 0, 0, 5, 5, 0, 0, 0, }, }, [QUEEN] = { { /* midgame */ -20, -10, -10, -5, -5, -10, -10, -20, -10, 0, 0, 0, 0, 0, 0, -10, -10, 0, 5, 5, 5, 5, 0, -10, - 5, 0, 5, 5, 5, 5, 0, -5, + 0, 0, 5, 5, 5, 5, 0, -5, -10, 5, 5, 5, 5, 5, 0, -10, -10, 0, 5, 0, 0, 0, 0, -10, -20, -10, -10, -5, -5, -10, -10, -20, }, { /* endgame */ -20, -10, -10, -5, -5, -10, -10, -20, -10, 0, 0, 0, 0, 0, 0, -10, -10, 0, 5, 5, 5, 5, 0, -10, - 5, 0, 5, 5, 5, 5, 0, -5, + 0, 0, 5, 5, 5, 5, 0, -5, -10, 5, 5, 5, 5, 5, 0, -10, -10, 0, 5, 0, 0, 0, 0, -10, -20, -10, -10, -5, -5, -10, -10, -20, }, }, [KING] = { /* midgame */ { -30, -40, -40, -50, -50, -40, -40, -30, -30, -40, -40, -50, -50, -40, -40, -30, -30, -40, -40, -50, -50, -40, -40, -30, -30, -40, -40, -50, -50, -40, -40, -30, -20, -30, -30, -40, -40, -30, -30, -20, -10, -20, -20, -20, -20, -20, -20, -10, +20, 20, 0, 0, 0, 0, 20, 20, +20, 30, 10, 0, 0, 10, 30, 20, }, { /* endgame */ -50, -40, -30, -20, -20, -30, -40, -50, -30, -20, -10, 0, 0, -10, -20, -30, -30, -10, 20, 30, 30, 20, -10, -30, -30, -10, 30, 40, 40, 30, -10, -30, -30, -10, 30, 40, 40, 30, -10, -30, -30, -10, 20, 30, 30, 20, -10, -30, -30, -30, 0, 0, 0, 0, -30, -30, -50, -30, -30, -30, -30, -30, -30, -50, } } } }, /* CPW end */ [PST_SJENG] = { /* * sjeng: https://github.com/gcp/sjeng * Rook and Queen from CPW. */ "sjeng", { /* A8 ..... H8 * ........... * A1 ..... H1 */ [PAWN] = { { /* midgame */ 0, 0, 0, 0, 0, 0, 0, 0, 5, 10, 15, 20, 20, 15, 10, 5, 4, 8, 12, 16, 16, 12, 8, 4, 3, 6, 9, 14, 14, 9, 6, 3, 2, 4, 6, 12, 12, 6, 4, 2, 1, 2, 3, 10, 10, 3, 2, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, { /* endgame */ 0, 0, 0, 0, 0, 0, 0, 0, 5, 10, 15, 20, 20, 15, 10, 5, 4, 8, 12, 16, 16, 12, 8, 4, 3, 6, 9, 14, 14, 9, 6, 3, 2, 4, 6, 12, 12, 6, 4, 2, 1, 2, 3, 10, 10, 3, 2, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, }, [KNIGHT] = { { /* midgame */ -20, -10, -10, -10, -10, -10, -10, -20, -10, 0, 0, 3, 3, 0, 0, -10, -10, 0, 5, 5, 5, 5, 0, -10, -10, 0, 5, 10, 10, 5, 0, -10, -10, 0, 5, 10, 10, 5, 0, -10, -10, 0, 5, 5, 5, 5, 0, -10, -10, 0, 0, 3, 3, 0, 0, -10, -20, -10, -10, -10, -10, -10, -10, -20, }, { /* endgame */ -20, -10, -10, -10, -10, -10, -10, -20, -10, 0, 0, 3, 3, 0, 0, -10, -10, 0, 5, 5, 5, 5, 0, -10, -10, 0, 5, 10, 10, 5, 0, -10, -10, 0, 5, 10, 10, 5, 0, -10, -10, 0, 5, 5, 5, 5, 0, -10, -10, 0, 0, 3, 3, 0, 0, -10, -20, -10, -10, -10, -10, -10, -10, -20, }, }, [BISHOP] = { { /* midgame */ -2, -2, -2, -2, -2, -2, -2, -2, -2, 8, 5, 5, 5, 5, 8, -2, -2, 3, 3, 5, 5, 3, 3, -2, -2, 2, 5, 4, 4, 5, 2, -2, -2, 2, 5, 4, 4, 5, 2, -2, -2, 3, 3, 5, 5, 3, 3, -2, -2, 8, 5, 5, 5, 5, 8, -2, -2, -2, -2, -2, -2, -2, -2, -2, }, { /* endgame */ -2, -2, -2, -2, -2, -2, -2, -2, -2, 8, 5, 5, 5, 5, 8, -2, -2, 3, 3, 5, 5, 3, 3, -2, -2, 2, 5, 4, 4, 5, 2, -2, -2, 2, 5, 4, 4, 5, 2, -2, -2, 3, 3, 5, 5, 3, 3, -2, -2, 8, 5, 5, 5, 5, 8, -2, -2, -2, -2, -2, -2, -2, -2, -2, }, }, [ROOK] = { { /* midgame */ +0, 0, 0, 0, 0, 0, 0, 0, +5, 10, 10, 10, 10, 10, 10, 5, -5, 0, 0, 0, 0, 0, 0, -5, -5, 0, 0, 0, 0, 0, 0, -5, -5, 0, 0, 0, 0, 0, 0, -5, -5, 0, 0, 0, 0, 0, 0, -5, -5, 0, 0, 0, 0, 0, 0, -5, +0, 0, 0, 5, 5, 0, 0, 0, }, { /* endgame */ +0, 0, 0, 0, 0, 0, 0, 0, +5, 10, 10, 10, 10, 10, 10, 5, -5, 0, 0, 0, 0, 0, 0, -5, -5, 0, 0, 0, 0, 0, 0, -5, -5, 0, 0, 0, 0, 0, 0, -5, -5, 0, 0, 0, 0, 0, 0, -5, -5, 0, 0, 0, 0, 0, 0, -5, +0, 0, 0, 5, 5, 0, 0, 0, }, }, [QUEEN] = { { /* midgame */ -20, -10, -10, -5, -5, -10, -10, -20, -10, 0, 5, 0, 0, 0, 0, -10, -10, 5, 5, 5, 5, 5, 0, -10, + 0, 0, 5, 5, 5, 5, 0, -5, -05, 0, 5, 5, 5, 5, 0, -5, -10, 0, 5, 5, 5, 5, 0, -10, -10, 0, 0, 0, 0, 0, 0, -10, -20, -10, -10, -5, -5, -10, -10, -20, }, { /* endgame */ -20, -10, -10, -5, -5, -10, -10, -20, -10, 0, 5, 0, 0, 0, 0, -10, -10, 5, 5, 5, 5, 5, 0, -10, + 0, 0, 5, 5, 5, 5, 0, -5, - 5, 0, 5, 5, 5, 5, 0, -5, -10, 0, 5, 5, 5, 5, 0, -10, -10, 0, 0, 0, 0, 0, 0, -10, -20, -10, -10, -5, -5, -10, -10, -20, }, }, [KING] = { /* midgame */ { -55, -55, -89, -89, -89, -89, -55, -55, -34, -34, -55, -55, -55, -55, -34, -34, -21, -21, -34, -34, -34, -34, -21, -21, -13, -13, -21, -21, -21, -21, -13, -13, - 8, -8, -13, -13, -13, -13, -8, -8, - 5, -5, -8, -8, -8, -8, -5, -5, - 3, -5, -6, -6, -6, -6, -5, -3, + 2, 14, 0, 0, 0, 9, 14, 2, }, { /* endgame */ -5, -3, -1, 0, 0, -1, -3, -5, -3, 10, 10, 10, 10, 10, 10, -3, -1, 10, 25, 25, 25, 25, 10, -1, +0, 10, 25, 30, 30, 25, 10, 0, +0, 10, 25, 30, 30, 25, 10, 0, -1, 10, 25, 25, 25, 25, 10, -1, -3, 10, 10, 10, 10, 10, 10, -3, -5, -3, -1, 0, 0, -1, -3, -5, } } }, }, /* sjeng end */ }; int pst_current = PST_DEFAULT; eval_t pst_mg[COLOR_NB][PT_NB][SQUARE_NB]; eval_t pst_eg[COLOR_NB][PT_NB][SQUARE_NB]; int pst_find(char *str) { for (int i = 0; i < PST_NB; ++i) if (!strcmp(pst_defs[i].name, str)) return i; return -1; } void pst_init(int set) { const struct pst *pst; if (warn(set < 0 || set >= PST_NB, "wrong PST, defaulting to zero.")) set = 0; # ifdef DEBUG_EVAL2 printf("initializing piece-square tables %d ('%s')\n", set, pst_defs[set].name); # endif pst = pst_defs + set; pst_current = set; int wmat = param(WT_MAT); int wpst = param(WT_PST); for (piece_type_t pt = PAWN; pt < PT_NB; ++pt) { eval_t mid_pc = piece_midval(pt); eval_t end_pc = piece_endval(pt); for (square_t sq = 0; sq < SQUARE_NB; ++sq) { eval_t mid_pst = pst->val[MIDGAME][pt][sq]; eval_t end_pst = pst->val[ENDGAME][pt][sq]; pst_mg[BLACK][pt][sq] = (mid_pc * wmat + mid_pst * wpst) / 100; pst_eg[BLACK][pt][sq] = (end_pc * wmat + end_pst * wpst) / 100; pst_mg[WHITE][pt][FLIP_V(sq)] = pst_mg[BLACK][pt][sq]; pst_eg[WHITE][pt][FLIP_V(sq)] = pst_eg[BLACK][pt][sq]; } } } char *pst_name(int i) { if (i >= 0 && i < PST_NB) return pst_defs[i].name; return "undef"; }