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Tuned some pawns and evaluation constants

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Tuned values in pawns.cpp and evaluate.cpp after a SPSA session:
419k games 60sec 600nodetime.  We have adjusted the PassedRank[]
output of the SPSA session to keep increasing values with rank,
and PassedFile[] output to keep the West <–> East symmetry of
the evaluation.

STC:
LLR: 2.95 (-2.94,2.94) [0.00,4.00]
Total: 58948 W: 12431 L: 12046 D: 34471
http://tests.stockfishchess.org/tests/view/5af2302f0ebc5968e6523f0a

LTC:
LLR: 2.96 (-2.94,2.94) [0.00,4.00]
Total: 22211 W: 3468 L: 3251 D: 15492
http://tests.stockfishchess.org/tests/view/5af264c80ebc5968e6523f1a

See https://github.com/official-stockfish/Stockfish/pull/1587
and https://github.com/official-stockfish/Stockfish/pull/1590

bench: 4437531
This commit is contained in:
candirufish
2018-05-09 09:18:22 +02:00
committed by Stéphane Nicolet
parent 4d647428d8
commit fc0a1f37cf
2 changed files with 23 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
src/evaluate.cpp
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@@ -146,17 +146,17 @@ namespace {
// PassedRank[Rank] contains a bonus according to the rank of a passed pawn
constexpr Score PassedRank[RANK_NB] = {
S(0, 0), S(5, 7), S(5, 13), S(32, 42), S(70, 70), S(172, 170), S(217, 269)
S(0, 0), S(5, 7), S(5, 13), S(18, 23), S(74, 58), S(164, 166), S(268, 243)
};
// PassedFile[File] contains a bonus according to the file of a passed pawn
constexpr Score PassedFile[FILE_NB] = {
S( 9, 10), S(2, 10), S(1, -8), S(-20,-12),
S(-20,-12), S(1, -8), S(2, 10), S( 9, 10)
S( 15, 7), S(-5, 14), S( 1, -5), S(-22,-11),
S(-22,-11), S( 1, -5), S(-5, 14), S( 15, 7)
};
// PassedDanger[Rank] contains a term to weight the passed score
constexpr int PassedDanger[RANK_NB] = { 0, 0, 0, 2, 7, 12, 19 };
constexpr int PassedDanger[RANK_NB] = { 0, 0, 0, 3, 6, 12, 21 };
// KingProtector[PieceType-2] contains a penalty according to distance from king
constexpr Score KingProtector[] = { S(3, 5), S(4, 3), S(3, 0), S(1, -1) };