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Tuned pawn values

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Passed STC:
https://tests.stockfishchess.org/tests/view/5f2aa49fa5abc164f05e4d1b
LLR: 2.95 (-2.94,2.94) {-0.50,1.50}
Total: 40888 W: 7977 L: 7726 D: 25185
Ptnml(0-2): 665, 4806, 9333, 4893, 747

Passed LTC:
https://tests.stockfishchess.org/tests/view/5f2b1059b3ebe5cbfee85ae7
LLR: 2.98 (-2.94,2.94) {0.25,1.75}
Total: 51264 W: 6445 L: 6134 D: 38685
Ptnml(0-2): 328, 4564, 15580, 4789, 371

closes https://github.com/official-stockfish/Stockfish/pull/2920

bench: 4314943
This commit is contained in:
FauziAkram 2020-08-06 17:37:54 -07:00 • committed by Joost VandeVondele
parent 8b8412ef87
commit af935365e3
2 changed files with 8 additions and 8 deletions
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14
src/pawns.cpp
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@ -30,21 +30,21 @@ namespace {
#define S(mg, eg) make_score(mg, eg)
// Pawn penalties
constexpr Score Backward = S( 9, 24);
constexpr Score Doubled = S(11, 56);
constexpr Score Isolated = S( 5, 15);
constexpr Score WeakLever = S( 0, 56);
constexpr Score WeakUnopposed = S(13, 27);
constexpr Score Backward = S( 8, 27);
constexpr Score Doubled = S(11, 55);
constexpr Score Isolated = S( 5, 17);
constexpr Score WeakLever = S( 2, 54);
constexpr Score WeakUnopposed = S(15, 25);
// Bonus for blocked pawns at 5th or 6th rank
constexpr Score BlockedPawn[2] = { S(-11, -4), S(-3, 4) };
constexpr Score BlockedPawn[2] = { S(-13, -4), S(-4, 3) };
constexpr Score BlockedStorm[RANK_NB] = {
S(0, 0), S(0, 0), S(76, 78), S(-10, 15), S(-7, 10), S(-4, 6), S(-1, 2)
};
// Connected pawn bonus
constexpr int Connected[RANK_NB] = { 0, 7, 8, 12, 29, 48, 86 };
constexpr int Connected[RANK_NB] = { 0, 7, 8, 11, 24, 45, 85 };
// Strength of pawn shelter for our king by [distance from edge][rank].
// RANK_1 = 0 is used for files where we have no pawn, or pawn is behind our king.

2
src/types.h
View file

@ -178,7 +178,7 @@ enum Value : int {
VALUE_MATE_IN_MAX_PLY = VALUE_MATE - MAX_PLY,
VALUE_MATED_IN_MAX_PLY = -VALUE_MATE_IN_MAX_PLY,
PawnValueMg = 124, PawnValueEg = 206,
PawnValueMg = 126, PawnValueEg = 208,
KnightValueMg = 781, KnightValueEg = 854,
BishopValueMg = 825, BishopValueEg = 915,
RookValueMg = 1276, RookValueEg = 1380,