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Tweak LMR and killers

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Give extra stat bonus/malus in case of LMR for killers.

passed STC
http://tests.stockfishchess.org/tests/view/5d2c8e760ebc5925cf0dcf23
LLR: 2.95 (-2.94,2.94) [0.50,4.50]
Total: 67188 W: 15030 L: 14534 D: 37624

passed LTC
http://tests.stockfishchess.org/tests/view/5d2d0ce40ebc5925cf0de115
LLR: 2.96 (-2.94,2.94) [0.00,3.50]
Total: 144355 W: 24739 L: 24153 D: 95463

Closes https://github.com/official-stockfish/Stockfish/pull/2246

bench 3723147
This commit is contained in:
Vizvezdenec 2019-07-16 14:56:52 +03:00 • committed by Stéphane Nicolet
parent 3ec362e4b2
commit 19509e5f13
1 changed files with 3 additions and 0 deletions
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3
src/search.cpp
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@ -1144,6 +1144,9 @@ moves_loop: // When in check, search starts from here
int bonus = value > alpha ? stat_bonus(newDepth)
: -stat_bonus(newDepth);
if (move == ss->killers[0])
bonus += bonus / 4;
update_continuation_histories(ss, movedPiece, to_sq(move), bonus);
}
}