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score qmove #93

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merged 1 commit into from
Jun 26, 2022
Merged

score qmove #93

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16 changes: 13 additions & 3 deletions src/search.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -124,7 +124,7 @@ int Search::qsearch(int depth, int alpha, int beta, int ply) {

// assign a value to each move
for (int i = 0; i < ml.size; i++) {
ml.list[i].value = mmlva(ml.list[i]);
ml.list[i].value = score_qmove(ml.list[i]);
}

// sort the moves
Expand Down Expand Up @@ -297,8 +297,6 @@ int Search::absearch(int depth, int alpha, int beta, int ply, Stack *ss) {

board.makeMove(move);



U64 nodeCount = nodes;
ss->currentmove = move.get();
bool givesCheck = board.isSquareAttacked(color, board.KingSQ(~color));
Expand Down Expand Up @@ -559,6 +557,18 @@ int Search::score_move(Move& move, int ply, bool ttMove) {
}
}

int Search::score_qmove(Move& move) {
if (move.promoted()) {
return 2147483647 - 20 + move.piece();
}
else if (board.pieceAtB(move.to()) != None) {
return see(move, -100) ? mmlva(move) * 10000 : mmlva(move);
}
else {
return 0;
}
}

std::string Search::get_pv() {
std::string line = "";
for (int i = 0; i < pv_length[0]; i++) {
Expand Down
1 change: 1 addition & 0 deletions src/search.h
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Expand Up @@ -52,6 +52,7 @@ class Search {
bool see(Move& move, int threshold);
int mmlva(Move& move);
int score_move(Move& move, int ply, bool ttMove);
int score_qmove(Move& move);
std::string get_pv();
bool store_entry(U64 index, int depth, int bestvalue, int old_alpha, int beta, U64 key, uint8_t ply);
void uci_output(int score, int depth, int time);
Expand Down