diff --git a/src/position.cpp b/src/position.cpp index 218be153d..52f10a333 100644 --- a/src/position.cpp +++ b/src/position.cpp @@ -1211,7 +1211,7 @@ void Position::do_castling(Color us, // Used to do a "null move": it flips // the side to move without executing any move on the board. -void Position::do_null_move(StateInfo& newSt, const TranspositionTable& tt) { +void Position::do_null_move(StateInfo& newSt) { assert(!checkers()); assert(&newSt != st); @@ -1228,7 +1228,6 @@ void Position::do_null_move(StateInfo& newSt, const TranspositionTable& tt) { } st->key ^= Zobrist::side; - prefetch(tt.first_entry(key())); st->pliesFromNull = 0; diff --git a/src/position.h b/src/position.h index a136c0729..e02a400d3 100644 --- a/src/position.h +++ b/src/position.h @@ -143,7 +143,7 @@ class Position { const TranspositionTable* tt, const SharedHistories* worker); void undo_move(Move m); - void do_null_move(StateInfo& newSt, const TranspositionTable& tt); + void do_null_move(StateInfo& newSt); void undo_null_move(); // Static Exchange Evaluation diff --git a/src/search.cpp b/src/search.cpp index 44cd97c91..309e63a9b 100644 --- a/src/search.cpp +++ b/src/search.cpp @@ -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];