From: Joona Kiiski Date: Wed, 17 Mar 2010 06:32:26 +0000 (+0200) Subject: Another PSQT tuning round X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=b24a2dfc728039a8baad47f23d8e793d61b5b8d5 Another PSQT tuning round This time with a new algorithm by Joona. It works basically like this: repeat { 1) pick 8000 random positions from qsearch 2) "go depth 8" to get the true evaluation. 3) "eval" to get the stand pat score 4) Adjusting parameters one by one to minimize deltasum between true evaluation and stand pat scores. } * Good news: method seems to converge * Bad news: Point where it converges is not optimum. So it's more or less trial and error... sometimes works, sometimes doesn't. It can give you the right direction, but if you let it run too long, it fails. Far from scientific ;) After 14800 games with 5s/game Orig - Mod: 3318 - 3570 - 7626 (+6 elo) Signed-off-by: Marco Costalba --- diff --git a/src/psqtab.h b/src/psqtab.h index fe76fd03..4957fc7d 100644 --- a/src/psqtab.h +++ b/src/psqtab.h @@ -29,160 +29,135 @@ //// -//// Constants modified by Joona Kiiski +//// Values tuned by Joona Kiiski //// -static const Value MP = PawnValueMidgame; -static const Value MK = KnightValueMidgame; -static const Value MB = BishopValueMidgame; -static const Value MR = RookValueMidgame; -static const Value MQ = QueenValueMidgame; - -static const int MgPST[][64] = { - { }, - {// Pawn - // A B C D E F G H - 0, 0, 0, 0, 0, 0, 0, 0, - MP-28, MP-6, MP+ 4, MP+14, MP+14, MP+ 4, MP-6, MP-28, - MP-28, MP-6, MP+ 9, MP+36, MP+36, MP+ 9, MP-6, MP-28, - MP-28, MP-6, MP+17, MP+58, MP+58, MP+17, MP-6, MP-28, - MP-28, MP-6, MP+17, MP+36, MP+36, MP+17, MP-6, MP-28, - MP-28, MP-6, MP+ 9, MP+14, MP+14, MP+ 9, MP-6, MP-28, - MP-28, MP-6, MP+ 4, MP+14, MP+14, MP+ 4, MP-6, MP-28, - 0, 0, 0, 0, 0, 0, 0, 0 +static const int MgPST[][64] = { // [piece][square] + {}, + { // Pawn + 4, 5, 7, 8, 8, 7, 5, 4, + 162, 183, 194, 204, 204, 194, 183, 162, + 164, 185, 201, 227, 227, 201, 185, 164, + 165, 186, 210, 247, 247, 210, 186, 165, + 166, 187, 211, 229, 229, 211, 187, 166, + 167, 188, 204, 209, 209, 204, 188, 167, + 168, 189, 200, 210, 210, 200, 189, 168, + 8, 9, 11, 12, 12, 11, 9, 8 }, - {// Knight - // A B C D E F G H - MK-135, MK-107, MK-80, MK-67, MK-67, MK-80, MK-107, MK-135, - MK- 93, MK- 67, MK-39, MK-25, MK-25, MK-39, MK- 67, MK- 93, - MK- 53, MK- 25, MK+ 1, MK+13, MK+13, MK+ 1, MK- 25, MK- 53, - MK- 25, MK+ 1, MK+27, MK+41, MK+41, MK+27, MK+ 1, MK- 25, - MK- 11, MK+ 13, MK+41, MK+55, MK+55, MK+41, MK+ 13, MK- 11, - MK- 11, MK+ 13, MK+41, MK+55, MK+55, MK+41, MK+ 13, MK- 11, - MK- 53, MK- 25, MK+ 1, MK+13, MK+13, MK+ 1, MK- 25, MK- 53, - MK-193, MK- 67, MK-39, MK-25, MK-25, MK-39, MK- 67, MK-193 + { // Knight + 675, 709, 742, 759, 759, 742, 709, 675, + 721, 752, 785, 802, 802, 785, 752, 721, + 765, 797, 827, 841, 841, 827, 797, 765, + 794, 823, 853, 869, 869, 853, 823, 794, + 808, 834, 865, 881, 881, 865, 834, 808, + 807, 833, 864, 879, 879, 864, 833, 807, + 764, 794, 823, 837, 837, 823, 794, 764, + 624, 752, 783, 799, 799, 783, 752, 624 }, - {// Bishop - // A B C D E F G H - MB-40, MB-40, MB-35, MB-30, MB-30, MB-35, MB-40, MB-40, - MB-17, MB+ 0, MB- 4, MB+ 0, MB+ 0, MB- 4, MB+ 0, MB-17, - MB-13, MB- 4, MB+ 8, MB+ 4, MB+ 4, MB+ 8, MB- 4, MB-13, - MB- 8, MB+ 0, MB+ 4, MB+17, MB+17, MB+ 4, MB+ 0, MB- 8, - MB- 8, MB+ 0, MB+ 4, MB+17, MB+17, MB+ 4, MB+ 0, MB- 8, - MB-13, MB- 4, MB+ 8, MB+ 4, MB+ 4, MB+ 8, MB- 4, MB-13, - MB-17, MB+ 0, MB- 4, MB+ 0, MB+ 0, MB- 4, MB+ 0, MB-17, - MB-17, MB-17, MB-13, MB- 8, MB- 8, MB-13, MB-17, MB-17 + { // Bishop + 795, 792, 796, 800, 800, 796, 792, 795, + 824, 845, 841, 844, 844, 841, 845, 824, + 830, 841, 855, 848, 848, 855, 841, 830, + 835, 844, 848, 867, 867, 848, 844, 835, + 834, 843, 847, 866, 866, 847, 843, 834, + 827, 838, 852, 845, 845, 852, 838, 827, + 821, 841, 837, 840, 840, 837, 841, 821, + 821, 820, 824, 830, 830, 824, 820, 821 }, - {// Rook - // A B C D E F G H - MR-12, MR-7, MR-2, MR+2, MR+2, MR-2, MR-7, MR-12, - MR-12, MR-7, MR-2, MR+2, MR+2, MR-2, MR-7, MR-12, - MR-12, MR-7, MR-2, MR+2, MR+2, MR-2, MR-7, MR-12, - MR-12, MR-7, MR-2, MR+2, MR+2, MR-2, MR-7, MR-12, - MR-12, MR-7, MR-2, MR+2, MR+2, MR-2, MR-7, MR-12, - MR-12, MR-7, MR-2, MR+2, MR+2, MR-2, MR-7, MR-12, - MR-12, MR-7, MR-2, MR+2, MR+2, MR-2, MR-7, MR-12, - MR-12, MR-7, MR-2, MR+2, MR+2, MR-2, MR-7, MR-12 + { // Rook + 1258, 1263, 1268, 1272, 1272, 1268, 1263, 1258, + 1258, 1263, 1268, 1272, 1272, 1268, 1263, 1258, + 1258, 1263, 1268, 1272, 1272, 1268, 1263, 1258, + 1258, 1263, 1268, 1272, 1272, 1268, 1263, 1258, + 1258, 1263, 1268, 1272, 1272, 1268, 1263, 1258, + 1258, 1263, 1268, 1272, 1272, 1268, 1263, 1258, + 1258, 1263, 1268, 1272, 1272, 1268, 1263, 1258, + 1258, 1263, 1268, 1272, 1272, 1268, 1263, 1258 }, - {// Queen - // A B C D E F G H - MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, - MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, - MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, - MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, - MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, - MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, - MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, - MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, MQ+8, MQ+8 + { // Queen + 2529, 2529, 2529, 2529, 2529, 2529, 2529, 2529, + 2529, 2529, 2529, 2529, 2529, 2529, 2529, 2529, + 2529, 2529, 2529, 2529, 2529, 2529, 2529, 2529, + 2529, 2529, 2529, 2529, 2529, 2529, 2529, 2529, + 2529, 2529, 2529, 2529, 2529, 2529, 2529, 2529, + 2529, 2529, 2529, 2529, 2529, 2529, 2529, 2529, + 2529, 2529, 2529, 2529, 2529, 2529, 2529, 2529, + 2529, 2529, 2529, 2529, 2529, 2529, 2529, 2529 }, - {// King - //A B C D E F G H - 287, 311, 262, 214, 214, 262, 311, 287, - 262, 287, 238, 190, 190, 238, 287, 262, - 214, 238, 190, 142, 142, 190, 238, 214, - 190, 214, 167, 119, 119, 167, 214, 190, - 167, 190, 142, 94, 94, 142, 190, 167, - 142, 167, 119, 69, 69, 119, 167, 142, - 119, 142, 94, 46, 46, 94, 142, 119, - 94, 119, 69, 21, 21, 69, 119, 94 + { // King + 287, 311, 262, 214, 214, 262, 311, 287, + 262, 287, 238, 190, 190, 238, 287, 262, + 214, 238, 190, 142, 142, 190, 238, 214, + 190, 214, 167, 119, 119, 167, 214, 190, + 167, 190, 142, 94, 94, 142, 190, 167, + 142, 167, 119, 69, 69, 119, 167, 142, + 119, 142, 94, 46, 46, 94, 142, 119, + 94, 119, 69, 21, 21, 69, 119, 94 } }; -static const Value EP = PawnValueEndgame; -static const Value EK = KnightValueEndgame; -static const Value EB = BishopValueEndgame; -static const Value ER = RookValueEndgame; -static const Value EQ = QueenValueEndgame; - -static const int EgPST[][64] = { - { }, - {// Pawn - // A B C D E F G H - 0, 0, 0, 0, 0, 0, 0, 0, - EP-8, EP-8, EP-8, EP-8, EP-8, EP-8, EP-8, EP-8, - EP-8, EP-8, EP-8, EP-8, EP-8, EP-8, EP-8, EP-8, - EP-8, EP-8, EP-8, EP-8, EP-8, EP-8, EP-8, EP-8, - EP-8, EP-8, EP-8, EP-8, EP-8, EP-8, EP-8, EP-8, - EP-8, EP-8, EP-8, EP-8, EP-8, EP-8, EP-8, EP-8, - EP-8, EP-8, EP-8, EP-8, EP-8, EP-8, EP-8, EP-8, - 0, 0, 0, 0, 0, 0, 0, 0 +static const int EgPST[][64] = { // [piece][square] + {}, + { // Pawn + 2, 0, -2, -4, -4, -2, 0, 2, + 253, 251, 249, 247, 247, 249, 251, 253, + 253, 251, 249, 247, 247, 249, 251, 253, + 253, 251, 249, 247, 247, 249, 251, 253, + 254, 252, 250, 248, 248, 250, 252, 254, + 254, 252, 250, 248, 248, 250, 252, 254, + 254, 252, 250, 248, 248, 250, 252, 254, + 4, 2, 0, -2, -2, 0, 2, 4 }, - {// Knight - // A B C D E F G H - EK-104, EK-79, EK-55, EK-42, EK-42, EK-55, EK-79, EK-104, - EK- 79, EK-55, EK-30, EK-17, EK-17, EK-30, EK-55, EK- 79, - EK- 55, EK-30, EK- 6, EK+ 5, EK+ 5, EK- 6, EK-30, EK- 55, - EK- 42, EK-17, EK+ 5, EK+18, EK+18, EK+ 5, EK-17, EK- 42, - EK- 42, EK-17, EK+ 5, EK+18, EK+18, EK+ 5, EK-17, EK- 42, - EK- 55, EK-30, EK- 6, EK+ 5, EK+ 5, EK- 6, EK-30, EK- 55, - EK- 79, EK-55, EK-30, EK-17, EK-17, EK-30, EK-55, EK- 79, - EK-104, EK-79, EK-55, EK-42, EK-42, EK-55, EK-79, EK-104 + { // Knight + 741, 765, 791, 806, 806, 791, 765, 741, + 766, 790, 818, 834, 834, 818, 790, 766, + 790, 816, 844, 858, 858, 844, 816, 790, + 803, 830, 855, 873, 873, 855, 830, 803, + 803, 830, 855, 873, 873, 855, 830, 803, + 790, 816, 844, 858, 858, 844, 816, 790, + 766, 790, 818, 834, 834, 818, 790, 766, + 741, 765, 791, 806, 806, 791, 765, 741 }, - {// Bishop - // A B C D E F G H - EB-59, EB-42, EB-35, EB-26, EB-26, EB-35, EB-42, EB-59, - EB-42, EB-26, EB-18, EB-11, EB-11, EB-18, EB-26, EB-42, - EB-35, EB-18, EB-11, EB- 4, EB- 4, EB-11, EB-18, EB-35, - EB-26, EB-11, EB- 4, EB+ 4, EB+ 4, EB- 4, EB-11, EB-26, - EB-26, EB-11, EB- 4, EB+ 4, EB+ 4, EB- 4, EB-11, EB-26, - EB-35, EB-18, EB-11, EB- 4, EB- 4, EB-11, EB-18, EB-35, - EB-42, EB-26, EB-18, EB-11, EB-11, EB-18, EB-26, EB-42, - EB-59, EB-42, EB-35, EB-26, EB-26, EB-35, EB-42, EB-59 + { // Bishop + 798, 816, 826, 836, 836, 826, 816, 798, + 814, 831, 841, 849, 849, 841, 831, 814, + 820, 838, 847, 856, 856, 847, 838, 820, + 829, 845, 855, 865, 865, 855, 845, 829, + 830, 846, 856, 866, 866, 856, 846, 830, + 821, 840, 850, 859, 859, 850, 840, 821, + 815, 833, 844, 853, 853, 844, 833, 815, + 798, 817, 828, 839, 839, 828, 817, 798 }, - {// Rook - // A B C D E F G H - ER+3, ER+3, ER+3, ER+3, ER+3, ER+3, ER+3, ER+3, - ER+3, ER+3, ER+3, ER+3, ER+3, ER+3, ER+3, ER+3, - ER+3, ER+3, ER+3, ER+3, ER+3, ER+3, ER+3, ER+3, - ER+3, ER+3, ER+3, ER+3, ER+3, ER+3, ER+3, ER+3, - ER+3, ER+3, ER+3, ER+3, ER+3, ER+3, ER+3, ER+3, - ER+3, ER+3, ER+3, ER+3, ER+3, ER+3, ER+3, ER+3, - ER+3, ER+3, ER+3, ER+3, ER+3, ER+3, ER+3, ER+3, - ER+3, ER+3, ER+3, ER+3, ER+3, ER+3, ER+3, ER+3 + { // Rook + 1281, 1281, 1281, 1281, 1281, 1281, 1281, 1281, + 1281, 1281, 1281, 1281, 1281, 1281, 1281, 1281, + 1281, 1281, 1281, 1281, 1281, 1281, 1281, 1281, + 1281, 1281, 1281, 1281, 1281, 1281, 1281, 1281, + 1281, 1281, 1281, 1281, 1281, 1281, 1281, 1281, + 1281, 1281, 1281, 1281, 1281, 1281, 1281, 1281, + 1281, 1281, 1281, 1281, 1281, 1281, 1281, 1281, + 1281, 1281, 1281, 1281, 1281, 1281, 1281, 1281 }, - {// Queen - // A B C D E F G H - EQ-80, EQ-54, EQ-42, EQ-30, EQ-30, EQ-42, EQ-54, EQ-80, - EQ-54, EQ-30, EQ-18, EQ- 6, EQ- 6, EQ-18, EQ-30, EQ-54, - EQ-42, EQ-18, EQ- 6, EQ+ 6, EQ+ 6, EQ- 6, EQ-18, EQ-42, - EQ-30, EQ- 6, EQ+ 6, EQ+18, EQ+18, EQ+ 6, EQ- 6, EQ-30, - EQ-30, EQ- 6, EQ+ 6, EQ+18, EQ+18, EQ+ 6, EQ- 6, EQ-30, - EQ-42, EQ-18, EQ- 6, EQ+ 6, EQ+ 6, EQ- 6, EQ-18, EQ-42, - EQ-54, EQ-30, EQ-18, EQ- 6, EQ- 6, EQ-18, EQ-30, EQ-54, - EQ-80, EQ-54, EQ-42, EQ-30, EQ-30, EQ-42, EQ-54, EQ-80 + { // Queen + 2478, 2504, 2516, 2528, 2528, 2516, 2504, 2478, + 2504, 2528, 2540, 2552, 2552, 2540, 2528, 2504, + 2516, 2540, 2552, 2564, 2564, 2552, 2540, 2516, + 2528, 2552, 2564, 2576, 2576, 2564, 2552, 2528, + 2528, 2552, 2564, 2576, 2576, 2564, 2552, 2528, + 2516, 2540, 2552, 2564, 2564, 2552, 2540, 2516, + 2504, 2528, 2540, 2552, 2552, 2540, 2528, 2504, + 2478, 2504, 2516, 2528, 2528, 2516, 2504, 2478 }, - {// King - //A B C D E F G H - 18, 77, 105, 135, 135, 105, 77, 18, - 77, 135, 165, 193, 193, 165, 135, 77, - 105, 165, 193, 222, 222, 193, 165, 105, - 135, 193, 222, 251, 251, 222, 193, 135, - 135, 193, 222, 251, 251, 222, 193, 135, - 105, 165, 193, 222, 222, 193, 165, 105, - 77, 135, 165, 193, 193, 165, 135, 77, - 18, 77, 105, 135, 135, 105, 77, 18 + { // King + 18, 77, 105, 135, 135, 105, 77, 18, + 77, 135, 165, 193, 193, 165, 135, 77, + 105, 165, 193, 222, 222, 193, 165, 105, + 135, 193, 222, 251, 251, 222, 193, 135, + 135, 193, 222, 251, 251, 222, 193, 135, + 105, 165, 193, 222, 222, 193, 165, 105, + 77, 135, 165, 193, 193, 165, 135, 77, + 18, 77, 105, 135, 135, 105, 77, 18 } }; - #endif // !defined(PSQTAB_H_INCLUDED)