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Remove prefetching in Position::do_null_move

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Passed non-regression STC, Hash=16:

LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 60704 W: 15709 L: 15522 D: 29473
Ptnml(0-2): 169, 6589, 16649, 6776, 169
https://tests.stockfishchess.org/tests/view/6963d381f6d2e8deff76918f

Passed non-regression STC SMP, Hash=512:

LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 313512 W: 80151 L: 80231 D: 153130
Ptnml(0-2): 376, 35492, 85111, 35390, 387
https://tests.stockfishchess.org/tests/view/696e1684e5a70879bd3fe38f

closes https://github.com/official-stockfish/Stockfish/pull/6545

No functional change
This commit is contained in:
Jakub Ciolek
2026-02-08 15:22:06 +01:00
committed by Disservin
parent e3a5c40f05
commit 73475b198d
3 changed files with 3 additions and 4 deletions
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src/search.cpp
+1 -1
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@@ -569,7 +569,7 @@ void Search::Worker::do_move(
}
void Search::Worker::do_null_move(Position& pos, StateInfo& st, Stack* const ss) {
pos.do_null_move(st, tt);
pos.do_null_move(st);
ss->currentMove = Move::null();
ss->continuationHistory = &continuationHistory[0][0][NO_PIECE][0];
ss->continuationCorrectionHistory = &continuationCorrectionHistory[NO_PIECE][0];