mirror of
https://github.com/sockspls/badfish
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b24a2dfc72
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 <mcostalba@gmail.com>
163 lines
6.1 KiB
C
163 lines
6.1 KiB
C
/*
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Stockfish, a UCI chess playing engine derived from Glaurung 2.1
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Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
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Copyright (C) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad
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Stockfish is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Stockfish is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#if !defined(PSQTAB_H_INCLUDED)
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#define PSQTAB_H_INCLUDED
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////
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//// Includes
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////
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#include "value.h"
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////
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//// Values tuned by Joona Kiiski
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////
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static const int MgPST[][64] = { // [piece][square]
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{},
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{ // Pawn
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4, 5, 7, 8, 8, 7, 5, 4,
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162, 183, 194, 204, 204, 194, 183, 162,
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164, 185, 201, 227, 227, 201, 185, 164,
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165, 186, 210, 247, 247, 210, 186, 165,
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166, 187, 211, 229, 229, 211, 187, 166,
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167, 188, 204, 209, 209, 204, 188, 167,
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168, 189, 200, 210, 210, 200, 189, 168,
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8, 9, 11, 12, 12, 11, 9, 8
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},
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{ // Knight
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675, 709, 742, 759, 759, 742, 709, 675,
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721, 752, 785, 802, 802, 785, 752, 721,
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765, 797, 827, 841, 841, 827, 797, 765,
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794, 823, 853, 869, 869, 853, 823, 794,
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808, 834, 865, 881, 881, 865, 834, 808,
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807, 833, 864, 879, 879, 864, 833, 807,
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764, 794, 823, 837, 837, 823, 794, 764,
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624, 752, 783, 799, 799, 783, 752, 624
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},
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{ // Bishop
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795, 792, 796, 800, 800, 796, 792, 795,
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824, 845, 841, 844, 844, 841, 845, 824,
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830, 841, 855, 848, 848, 855, 841, 830,
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835, 844, 848, 867, 867, 848, 844, 835,
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834, 843, 847, 866, 866, 847, 843, 834,
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827, 838, 852, 845, 845, 852, 838, 827,
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821, 841, 837, 840, 840, 837, 841, 821,
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821, 820, 824, 830, 830, 824, 820, 821
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},
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{ // Rook
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1258, 1263, 1268, 1272, 1272, 1268, 1263, 1258,
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1258, 1263, 1268, 1272, 1272, 1268, 1263, 1258,
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1258, 1263, 1268, 1272, 1272, 1268, 1263, 1258,
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1258, 1263, 1268, 1272, 1272, 1268, 1263, 1258,
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1258, 1263, 1268, 1272, 1272, 1268, 1263, 1258,
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1258, 1263, 1268, 1272, 1272, 1268, 1263, 1258,
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1258, 1263, 1268, 1272, 1272, 1268, 1263, 1258,
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1258, 1263, 1268, 1272, 1272, 1268, 1263, 1258
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},
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{ // Queen
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2529, 2529, 2529, 2529, 2529, 2529, 2529, 2529,
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2529, 2529, 2529, 2529, 2529, 2529, 2529, 2529,
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2529, 2529, 2529, 2529, 2529, 2529, 2529, 2529,
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2529, 2529, 2529, 2529, 2529, 2529, 2529, 2529,
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2529, 2529, 2529, 2529, 2529, 2529, 2529, 2529,
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2529, 2529, 2529, 2529, 2529, 2529, 2529, 2529,
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2529, 2529, 2529, 2529, 2529, 2529, 2529, 2529,
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2529, 2529, 2529, 2529, 2529, 2529, 2529, 2529
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},
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{ // King
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287, 311, 262, 214, 214, 262, 311, 287,
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262, 287, 238, 190, 190, 238, 287, 262,
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214, 238, 190, 142, 142, 190, 238, 214,
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190, 214, 167, 119, 119, 167, 214, 190,
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167, 190, 142, 94, 94, 142, 190, 167,
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142, 167, 119, 69, 69, 119, 167, 142,
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119, 142, 94, 46, 46, 94, 142, 119,
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94, 119, 69, 21, 21, 69, 119, 94
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}
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};
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static const int EgPST[][64] = { // [piece][square]
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{},
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{ // Pawn
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2, 0, -2, -4, -4, -2, 0, 2,
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253, 251, 249, 247, 247, 249, 251, 253,
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253, 251, 249, 247, 247, 249, 251, 253,
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253, 251, 249, 247, 247, 249, 251, 253,
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254, 252, 250, 248, 248, 250, 252, 254,
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254, 252, 250, 248, 248, 250, 252, 254,
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254, 252, 250, 248, 248, 250, 252, 254,
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4, 2, 0, -2, -2, 0, 2, 4
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},
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{ // Knight
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741, 765, 791, 806, 806, 791, 765, 741,
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766, 790, 818, 834, 834, 818, 790, 766,
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790, 816, 844, 858, 858, 844, 816, 790,
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803, 830, 855, 873, 873, 855, 830, 803,
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803, 830, 855, 873, 873, 855, 830, 803,
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790, 816, 844, 858, 858, 844, 816, 790,
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766, 790, 818, 834, 834, 818, 790, 766,
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741, 765, 791, 806, 806, 791, 765, 741
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},
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{ // Bishop
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798, 816, 826, 836, 836, 826, 816, 798,
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814, 831, 841, 849, 849, 841, 831, 814,
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820, 838, 847, 856, 856, 847, 838, 820,
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829, 845, 855, 865, 865, 855, 845, 829,
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830, 846, 856, 866, 866, 856, 846, 830,
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821, 840, 850, 859, 859, 850, 840, 821,
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815, 833, 844, 853, 853, 844, 833, 815,
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798, 817, 828, 839, 839, 828, 817, 798
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},
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{ // Rook
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1281, 1281, 1281, 1281, 1281, 1281, 1281, 1281,
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1281, 1281, 1281, 1281, 1281, 1281, 1281, 1281,
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1281, 1281, 1281, 1281, 1281, 1281, 1281, 1281,
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1281, 1281, 1281, 1281, 1281, 1281, 1281, 1281,
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1281, 1281, 1281, 1281, 1281, 1281, 1281, 1281,
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1281, 1281, 1281, 1281, 1281, 1281, 1281, 1281,
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1281, 1281, 1281, 1281, 1281, 1281, 1281, 1281,
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1281, 1281, 1281, 1281, 1281, 1281, 1281, 1281
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},
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{ // Queen
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2478, 2504, 2516, 2528, 2528, 2516, 2504, 2478,
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2504, 2528, 2540, 2552, 2552, 2540, 2528, 2504,
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2516, 2540, 2552, 2564, 2564, 2552, 2540, 2516,
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2528, 2552, 2564, 2576, 2576, 2564, 2552, 2528,
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2528, 2552, 2564, 2576, 2576, 2564, 2552, 2528,
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2516, 2540, 2552, 2564, 2564, 2552, 2540, 2516,
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2504, 2528, 2540, 2552, 2552, 2540, 2528, 2504,
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2478, 2504, 2516, 2528, 2528, 2516, 2504, 2478
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},
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{ // King
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18, 77, 105, 135, 135, 105, 77, 18,
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77, 135, 165, 193, 193, 165, 135, 77,
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105, 165, 193, 222, 222, 193, 165, 105,
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135, 193, 222, 251, 251, 222, 193, 135,
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135, 193, 222, 251, 251, 222, 193, 135,
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105, 165, 193, 222, 222, 193, 165, 105,
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77, 135, 165, 193, 193, 165, 135, 77,
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18, 77, 105, 135, 135, 105, 77, 18
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}
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};
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#endif // !defined(PSQTAB_H_INCLUDED)
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