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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 Dubslow
Eduardo Cáceres (eduherminio) Eduardo Cáceres (eduherminio)
Eelco de Groot (KingDefender) Eelco de Groot (KingDefender)
Ehsan Rashid (erashid)
Elvin Liu (solarlight2) Elvin Liu (solarlight2)
erbsenzaehler erbsenzaehler
Ernesto Gatti Ernesto Gatti

6
src/movepick.cpp
View file

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