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Simplifying malus for putting piece en prise formula

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Patch author: @ehsanrashid

Passed STC:
LLR: 2.93 (-2.94,2.94) <-1.75,0.25>
Total: 116192 W: 30229 L: 30094 D: 55869
Ptnml(0-2): 451, 13880, 29351, 13911, 503
https://tests.stockfishchess.org/tests/view/66510a40a86388d5e27da936

Passed LTC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 441312 W: 111009 L: 111220 D: 219083
Ptnml(0-2): 217, 49390, 121659, 49167, 223
https://tests.stockfishchess.org/tests/view/66530696a86388d5e27da9e3

closes https://github.com/official-stockfish/Stockfish/pull/5304

Bench: 1987574
This commit is contained in:
FauziAkram 2024-05-29 16:14:24 +03:00 • committed by Disservin
parent a169c78b6d
commit 41acbcae1a
2 changed files with 6 additions and 7 deletions
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1
AUTHORS
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@ -68,6 +68,7 @@ Douglas Matos Gomes (dsmsgms)
Dubslow
Eduardo Cáceres (eduherminio)
Eelco de Groot (KingDefender)
Ehsan Rashid (erashid)
Elvin Liu (solarlight2)
erbsenzaehler
Ernesto Gatti

12
src/movepick.cpp
View file

@ -197,13 +197,11 @@ void MovePicker::score() {
: 0;
// malus for putting piece en prise
m.value -= !(threatenedPieces & from)
? (pt == QUEEN ? bool(to & threatenedByRook) * 48150
+ bool(to & threatenedByMinor) * 10650
: pt == ROOK ? bool(to & threatenedByMinor) * 24335
: pt != PAWN ? bool(to & threatenedByPawn) * 14950
: 0)
: 0;
m.value -= (pt == QUEEN ? bool(to & threatenedByRook) * 48150
+ bool(to & threatenedByMinor) * 10650
: pt == ROOK ? bool(to & threatenedByMinor) * 24335
: pt != PAWN ? bool(to & threatenedByPawn) * 14950
: 0);
}
else // Type == EVASIONS