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Bonus Simplification

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This tune removes completely a recently added term.

Passed STC:
LLR: 2.93 (-2.94,2.94) <0.00,2.00>
Total: 61376 W: 16046 L: 15693 D: 29637
Ptnml(0-2): 207, 7132, 15665, 7469, 215
https://tests.stockfishchess.org/tests/view/669512b94ff211be9d4ebffb

Passed LTC:
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 100662 W: 25474 L: 25020 D: 50168
Ptnml(0-2): 64, 11092, 27581, 11514, 80
https://tests.stockfishchess.org/tests/view/66955f194ff211be9d4ec06a

Passed LTC#2:
LLR: 2.96 (-2.94,2.94) <-1.75,0.25>
Total: 28056 W: 7128 L: 6909 D: 14019
Ptnml(0-2): 18, 3084, 7620, 3273, 33
https://tests.stockfishchess.org/tests/view/669a541a4ff211be9d4ec52b

closes https://github.com/official-stockfish/Stockfish/pull/5502

bench: 1619438
This commit is contained in:
FauziAkram 2024-07-20 13:34:27 +03:00 • committed by Joost VandeVondele
parent 703f17975b
commit a2ba3e3362
1 changed files with 7 additions and 8 deletions
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15
src/search.cpp
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@ -189,7 +189,7 @@ void Search::Worker::start_searching() {
{} // Busy wait for a stop or a ponder reset
// Stop the threads if not already stopped (also raise the stop if
// "ponderhit" just reset threads.ponder).
// "ponderhit" just reset threads.ponder)
threads.stop = true;
// Wait until all threads have finished
@ -1362,20 +1362,19 @@ moves_loop: // When in check, search starts here
// Bonus for prior countermove that caused the fail low
else if (!priorCapture && prevSq != SQ_NONE)
{
int bonus = (138 * (depth > 5) + 58 * (PvNode || cutNode) + 160 * ((ss - 1)->moveCount > 8)
+ 84 * (!ss->inCheck && bestValue <= ss->staticEval - 108)
+ 153 * (!(ss - 1)->inCheck && bestValue <= -(ss - 1)->staticEval - 76)
+ 32 * (!(ss - 1)->inCheck && bestValue > -(ss - 1)->staticEval + 76));
int bonus = (122 * (depth > 5) + 39 * (PvNode || cutNode) + 165 * ((ss - 1)->moveCount > 8)
+ 107 * (!ss->inCheck && bestValue <= ss->staticEval - 98)
+ 134 * (!(ss - 1)->inCheck && bestValue <= -(ss - 1)->staticEval - 91));
// Proportional to "how much damage we have to undo"
bonus += std::clamp(-(ss - 1)->statScore / 100, -94, 300);
bonus += std::clamp(-(ss - 1)->statScore / 100, -94, 304);
bonus = std::max(bonus, 0);
update_continuation_histories(ss - 1, pos.piece_on(prevSq), prevSq,
stat_bonus(depth) * bonus / 100);
stat_bonus(depth) * bonus / 116);
thisThread->mainHistory[~us][((ss - 1)->currentMove).from_to()]
<< stat_bonus(depth) * bonus / 200;
<< stat_bonus(depth) * bonus / 180;
if (type_of(pos.piece_on(prevSq)) != PAWN && ((ss - 1)->currentMove).type_of() != PROMOTION)