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Code Issues Releases Wiki Activity

Fixed incorrect material key update when making promotion moves.

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This commit is contained in:
Tord Romstad 2009-08-20 16:54:20 +02:00
parent e01fefbbaf
commit e9aa20ad13
1 changed files with 4 additions and 4 deletions
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8
src/position.cpp
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@ -829,6 +829,10 @@ void Position::do_move(Move m, StateInfo& newSt, Bitboard dcCandidates) {
set_bit(&(byTypeBB[promotion]), to);
board[to] = piece_of_color_and_type(us, promotion);
// Update material key
st->materialKey ^= zobMaterial[us][PAWN][pieceCount[us][PAWN]];
st->materialKey ^= zobMaterial[us][promotion][pieceCount[us][promotion]+1];
// Update piece counts
pieceCount[us][PAWN]--;
pieceCount[us][promotion]++;
@ -845,10 +849,6 @@ void Position::do_move(Move m, StateInfo& newSt, Bitboard dcCandidates) {
key ^= zobrist[us][PAWN][to] ^ zobrist[us][promotion][to];
st->pawnKey ^= zobrist[us][PAWN][to];
// Update material key
st->materialKey ^= zobMaterial[us][PAWN][pieceCount[us][PAWN]];
st->materialKey ^= zobMaterial[us][promotion][pieceCount[us][promotion]+1];
// Partially revert and update incremental scores
st->mgValue -= pst<MidGame>(us, PAWN, to);
st->mgValue += pst<MidGame>(us, promotion, to);