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minimax-pk
| Author | SHA1 | Date |
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 Drake
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e35f1dc666 | 12 months ago |
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Drake
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f35413d395 | 12 months ago |
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Drake
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607fc63f4f | 12 months ago |
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Drake
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a2dfb8b6c8 | 12 months ago |
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Drake
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4ad9875c01 | 12 months ago |
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Drake
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a81bcb4689 | 1 year ago |
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Drake
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0790e688ef | 1 year ago |
@ -1 +1,2 @@
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/target
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inkwell-regression-testing
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@ -1,5 +1,5 @@
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# 1.666.0-rc
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- [ ] Ability to evaluate game state (whether it's early/mid/end-game)
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- [ ] Piece tables
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- [x] Ability to evaluate game state (whether it's early/mid/end-game)
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- [x] Piece tables
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- [ ] Draw prevention (via `chess`'s Game struct?)
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- [ ] Basic king safety (ie castling when appropriate, not always playing the double triple decker bongcloud)
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@ -0,0 +1,147 @@
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// piece tables originally sourced from https://www.talkchess.com/forum3/viewtopic.php?f=2&t=68311&start=19 via https://www.chessprogramming.org/PeSTO%27s_Evaluation_Function
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pub const GAMEPHASE: [i16; 12] = [0, 0, 1, 1, 1, 1, 2, 2, 4, 4, 0, 0];
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#[rustfmt::skip]
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pub const MIDGAME_PAWNS: [i16; 64] = [
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0, 0, 0, 0, 0, 0, 0, 0,
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98, 134, 61, 95, 68, 126, 34, -11,
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-6, 7, 26, 31, 65, 56, 25, -20,
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-14, 13, 6, 21, 23, 12, 17, -23,
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-27, -2, -5, 12, 17, 6, 10, -25,
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-26, -4, -4, -10, 3, 3, 33, -12,
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-35, -1, -20, -23, -15, 24, 38, -22,
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0, 0, 0, 0, 0, 0, 0, 0,
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];
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#[rustfmt::skip]
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pub const ENDGAME_PAWNS: [i16; 64] = [
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0, 0, 0, 0, 0, 0, 0, 0,
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178, 173, 158, 134, 147, 132, 165, 187,
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94, 100, 85, 67, 56, 53, 82, 84,
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32, 24, 13, 5, -2, 4, 17, 17,
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13, 9, -3, -7, -7, -8, 3, -1,
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4, 7, -6, 1, 0, -5, -1, -8,
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13, 8, 8, 10, 13, 0, 2, -7,
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0, 0, 0, 0, 0, 0, 0, 0,
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];
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#[rustfmt::skip]
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pub const MIDGAME_HORSEYS: [i16; 64] = [
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-167, -89, -34, -49, 61, -97, -15, -107,
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-73, -41, 72, 36, 23, 62, 7, -17,
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-47, 60, 37, 65, 84, 129, 73, 44,
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-9, 17, 19, 53, 37, 69, 18, 22,
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-13, 4, 16, 13, 28, 19, 21, -8,
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-23, -9, 12, 10, 19, 17, 25, -16,
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-29, -53, -12, -3, -1, 18, -14, -19,
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-105, -21, -58, -33, -17, -28, -19, -23,
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];
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#[rustfmt::skip]
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pub const ENDGAME_HORSEYS: [i16; 64] = [
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-58, -38, -13, -28, -31, -27, -63, -99,
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-25, -8, -25, -2, -9, -25, -24, -52,
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-24, -20, 10, 9, -1, -9, -19, -41,
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-17, 3, 22, 22, 22, 11, 8, -18,
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-18, -6, 16, 25, 16, 17, 4, -18,
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-23, -3, -1, 15, 10, -3, -20, -22,
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-42, -20, -10, -5, -2, -20, -23, -44,
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-29, -51, -23, -15, -22, -18, -50, -64,
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];
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#[rustfmt::skip]
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pub const MIDGAME_BISHOPS: [i16; 64] = [
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-29, 4, -82, -37, -25, -42, 7, -8,
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-26, 16, -18, -13, 30, 59, 18, -47,
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-16, 37, 43, 40, 35, 50, 37, -2,
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-4, 5, 19, 50, 37, 37, 7, -2,
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-6, 13, 13, 26, 34, 12, 10, 4,
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0, 15, 15, 15, 14, 27, 18, 10,
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4, 15, 16, 0, 7, 21, 33, 1,
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-33, -3, -14, -21, -13, -12, -39, -21,
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];
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#[rustfmt::skip]
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pub const ENDGAME_BISHOPS: [i16; 64] = [
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-14, -21, -11, -8, -7, -9, -17, -24,
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-8, -4, 7, -12, -3, -13, -4, -14,
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2, -8, 0, -1, -2, 6, 0, 4,
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-3, 9, 12, 9, 14, 10, 3, 2,
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-6, 3, 13, 19, 7, 10, -3, -9,
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-12, -3, 8, 10, 13, 3, -7, -15,
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-14, -18, -7, -1, 4, -9, -15, -27,
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-23, -9, -23, -5, -9, -16, -5, -17,
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];
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#[rustfmt::skip]
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pub const MIDGAME_ROOKS: [i16; 64] = [
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32, 42, 32, 51, 63, 9, 31, 43,
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27, 32, 58, 62, 80, 67, 26, 44,
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-5, 19, 26, 36, 17, 45, 61, 16,
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-24, -11, 7, 26, 24, 35, -8, -20,
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-36, -26, -12, -1, 9, -7, 6, -23,
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-45, -25, -16, -17, 3, 0, -5, -33,
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-44, -16, -20, -9, -1, 11, -6, -71,
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-19, -13, 1, 17, 16, 7, -37, -26,
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];
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#[rustfmt::skip]
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pub const ENDGAME_ROOKS: [i16; 64] = [
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13, 10, 18, 15, 12, 12, 8, 5,
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11, 13, 13, 11, -3, 3, 8, 3,
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7, 7, 7, 5, 4, -3, -5, -3,
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4, 3, 13, 1, 2, 1, -1, 2,
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3, 5, 8, 4, -5, -6, -8, -11,
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-4, 0, -5, -1, -7, -12, -8, -16,
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-6, -6, 0, 2, -9, -9, -11, -3,
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-9, 2, 3, -1, -5, -13, 4, -20,
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];
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#[rustfmt::skip]
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pub const MIDGAME_QUEENS: [i16; 64] = [
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-28, 0, 29, 12, 59, 44, 43, 45,
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-24, -39, -5, 1, -16, 57, 28, 54,
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-13, -17, 7, 8, 29, 56, 47, 57,
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-27, -27, -16, -16, -1, 17, -2, 1,
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-9, -26, -9, -10, -2, -4, 3, -3,
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-14, 2, -11, -2, -5, 2, 14, 5,
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-35, -8, 11, 2, 8, 15, -3, 1,
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-1, -18, -9, 10, -15, -25, -31, -50,
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];
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#[rustfmt::skip]
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pub const ENDGAME_QUEENS: [i16; 64] = [
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-9, 22, 22, 27, 27, 19, 10, 20,
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-17, 20, 32, 41, 58, 25, 30, 0,
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-20, 6, 9, 49, 47, 35, 19, 9,
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3, 22, 24, 45, 57, 40, 57, 36,
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-18, 28, 19, 47, 31, 34, 39, 23,
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-16, -27, 15, 6, 9, 17, 10, 5,
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-22, -23, -30, -16, -16, -23, -36, -32,
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-33, -28, -22, -43, -5, -32, -20, -41,
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];
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#[rustfmt::skip]
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pub const MIDGAME_KINGS: [i16; 64] = [
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-65, 23, 16, -15, -56, -34, 2, 13,
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29, -1, -20, -7, -8, -4, -38, -29,
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-9, 24, 2, -16, -20, 6, 22, -22,
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-17, -20, -12, -27, -30, -25, -14, -36,
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-49, -1, -27, -39, -46, -44, -33, -51,
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-14, -14, -22, -46, -44, -30, -15, -27,
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1, 7, -8, -64, -43, -16, 9, 8,
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-15, 36, 12, -54, 8, -28, 24, 14,
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];
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#[rustfmt::skip]
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pub const ENDGAME_KINGS: [i16; 64] = [
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-74, -35, -18, -18, -11, 15, 4, -17,
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-12, 17, 14, 17, 17, 38, 23, 11,
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10, 17, 23, 15, 20, 45, 44, 13,
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-8, 22, 24, 27, 26, 33, 26, 3,
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-18, -4, 21, 24, 27, 23, 9, -11,
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-19, -3, 11, 21, 23, 16, 7, -9,
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-27, -11, 4, 13, 14, 4, -5, -17,
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-53, -34, -21, -11, -28, -14, -24, -43,
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];
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@ -0,0 +1,22 @@
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use chess::Piece;
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pub const PAWN: i16 = 1;
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pub const HORSEY: i16 = 3;
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pub const BISHOP: i16 = 5;
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pub const ROOK: i16 = 5;
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pub const QUEEN: i16 = 10;
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pub fn get_piece_value(piece: Option<Piece>) -> i16 {
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match piece {
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Some(Piece::Pawn) => PAWN,
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Some(Piece::Knight) => HORSEY,
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Some(Piece::Bishop) => BISHOP,
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Some(Piece::Rook) => ROOK,
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Some(Piece::Queen) => QUEEN,
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_ => 0,
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}
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}
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