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remove useClassical depth condition

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passed STC:
https://tests.stockfishchess.org/tests/view/62e0c3e98e4fa6ae472695ed
LLR: 2.96 (-2.94,2.94) <-2.25,0.25>
Total: 293568 W: 78934 L: 79151 D: 135483
Ptnml(0-2): 1344, 31488, 81366, 31213, 1373

passed LTC:
https://tests.stockfishchess.org/tests/view/62e190aa8e4fa6ae4726b5b5
LLR: 2.98 (-2.94,2.94) <-2.25,0.25>
Total: 187392 W: 50971 L: 51028 D: 85393
Ptnml(0-2): 384, 17801, 57369, 17772, 370

other attempts to otherwise tune this parameter failed, bounds 6,7,10,11 failed STC, 8 passed STC but failed LTC

closes https://github.com/official-stockfish/Stockfish/pull/4112

bench 5796377
This commit is contained in:
Dubslow 2022-07-26 23:45:19 -05:00 • committed by Joost VandeVondele
parent c4a644922d
commit 18389e269d
1 changed files with 1 additions and 1 deletions
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2
src/evaluate.cpp
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@ -1055,7 +1055,7 @@ Value Eval::evaluate(const Position& pos, int* complexity) {
Value psq = pos.psq_eg_stm(); Value psq = pos.psq_eg_stm();
// Deciding between classical and NNUE eval (~10 Elo): for high PSQ imbalance we use classical, // Deciding between classical and NNUE eval (~10 Elo): for high PSQ imbalance we use classical,
// but we switch to NNUE during long shuffling or with high material on the board. // but we switch to NNUE during long shuffling or with high material on the board.
bool useClassical = (pos.this_thread()->depth > 9 || pos.count<ALL_PIECES>() > 7) bool useClassical = (pos.count<ALL_PIECES>() > 7)
&& abs(psq) * 5 > (856 + pos.non_pawn_material() / 64) * (10 + pos.rule50_count()); && abs(psq) * 5 > (856 + pos.non_pawn_material() / 64) * (10 + pos.rule50_count());
// Deciding between classical and NNUE eval (~10 Elo): for high PSQ imbalance we use classical, // Deciding between classical and NNUE eval (~10 Elo): for high PSQ imbalance we use classical,