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60351b9df9
This patch introduces three additional correction histories, namely, Major Piece Correction History, Minor Piece Correction History, and Non-Pawn Correction History. Introduced by @mcthouacbb in Sirius (https://github.com/mcthouacbb/Sirius) chess engine. The Major Piece Correction History is indexed by side-to-move and the Zobrist key representing the position of the King, Rook, and Queen of both sides. Likewise, the Minor Piece Correction History is indexed by side-to-move and the Zobrist key representing the position of the King, Knight, and Bishop of both sides. Also See:97b85bbaac3099cdef2fIntroduced by @zzzzz151 in Starzix (https://github.com/zzzzz151/Starzix) chess engine. Non-Pawn correction history consists of side-to-move, side of Zobrist key, and a Zobrist key representing of the position of all non-pawn pieces of **one side**. The non-pawn correction values for both key sides are then summed. Also See:34911772f133e0df8dd2The weights on the final correction value of the above correction histories, as well as existing correction histories, are then tuned in two separate SPSA sessions, totaling 75k games. SPSA1: https://tests.stockfishchess.org/tests/view/66e5243886d5ee47d953a86b (Stopped early due to some weights reaching the maximum value) SPSA2: https://tests.stockfishchess.org/tests/view/66e6a26f86d5ee47d953a965 Also thanks to @martinnovaak, (Motor https://github.com/martinnovaak/motor author) for insights and suggestions. Passed STC: LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 23328 W: 6197 L: 5901 D: 11230 Ptnml(0-2): 82, 2582, 6041, 2876, 83 https://tests.stockfishchess.org/tests/view/66e8787b86d5ee47d953ab6f Passed LTC: LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 10626 W: 2826 L: 2560 D: 5240 Ptnml(0-2): 4, 1054, 2941, 1300, 14 https://tests.stockfishchess.org/tests/view/66e8ab2386d5ee47d953aba8 closes https://github.com/official-stockfish/Stockfish/pull/5598 Bench: 1011161
33 lines
1.1 KiB
Bash
Executable File
33 lines
1.1 KiB
Bash
Executable File
#!/bin/bash
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# verify perft numbers (positions from https://www.chessprogramming.org/Perft_Results)
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error()
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{
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echo "perft testing failed on line $1"
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exit 1
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}
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trap 'error ${LINENO}' ERR
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echo "perft testing started"
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cat << EOF > perft.exp
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set timeout 10
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lassign \$argv pos depth result
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spawn ./stockfish
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send "position \$pos\\ngo perft \$depth\\n"
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expect "Nodes searched? \$result" {} timeout {exit 1}
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send "quit\\n"
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expect eof
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EOF
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expect perft.exp startpos 5 4865609 > /dev/null
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expect perft.exp "fen r3k2r/p1ppqpb1/bn2pnp1/3PN3/1p2P3/2N2Q1p/PPPBBPPP/R3K2R w KQkq -" 5 193690690 > /dev/null
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expect perft.exp "fen 8/2p5/3p4/KP5r/1R3p1k/8/4P1P1/8 w - -" 6 11030083 > /dev/null
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expect perft.exp "fen r3k2r/Pppp1ppp/1b3nbN/nP6/BBP1P3/q4N2/Pp1P2PP/R2Q1RK1 w kq - 0 1" 5 15833292 > /dev/null
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expect perft.exp "fen rnbq1k1r/pp1Pbppp/2p5/8/2B5/8/PPP1NnPP/RNBQK2R w KQ - 1 8" 5 89941194 > /dev/null
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expect perft.exp "fen r4rk1/1pp1qppp/p1np1n2/2b1p1B1/2B1P1b1/P1NP1N2/1PP1QPPP/R4RK1 w - - 0 10" 5 164075551 > /dev/null
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rm perft.exp
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echo "perft testing OK"
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