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Remove reduced LMR capture bonus

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In LMR, simplify away the reduced capture bonus (i.e. if (capture) bonus /= 6).

Non-regression STC: https://tests.stockfishchess.org/tests/view/63da1da9bbadd17b3787dced
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 28152 W: 7521 L: 7296 D: 13335
Ptnml(0-2): 76, 3069, 7568, 3280, 83

Non-regression LTC: https://tests.stockfishchess.org/tests/view/63da6ad4bbadd17b3787e98c
LLR: 2.96 (-2.94,2.94) <-1.75,0.25>
Total: 52472 W: 14120 L: 13941 D: 24411
Ptnml(0-2): 16, 5071, 15887, 5242, 20

closes https://github.com/official-stockfish/Stockfish/pull/4378

Bench: 4034016
This commit is contained in:
Muzhen Gaming 2023-02-03 18:54:30 +08:00 • committed by Joost VandeVondele
parent 1cdc0f78bd
commit d2f79ff0e0
1 changed files with 0 additions and 3 deletions
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3
src/search.cpp
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@ -1214,9 +1214,6 @@ moves_loop: // When in check, search starts here
int bonus = value > alpha ? stat_bonus(newDepth)
: -stat_bonus(newDepth);
if (capture)
bonus /= 6;
update_continuation_histories(ss, movedPiece, to_sq(move), bonus);
}
}