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Use MVV/LVA in score_evasions()

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Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba 2008-11-02 08:47:27 +01:00
parent d087b0a34a
commit 3e275680d5
1 changed files with 20 additions and 15 deletions
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21
src/movepick.cpp
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@ -253,19 +253,24 @@ void MovePicker::score_noncaptures() {
void MovePicker::score_evasions() { void MovePicker::score_evasions() {
Move m;
int hs;
// Use MVV/LVA ordering
for (int i = 0; i < numOfMoves; i++) for (int i = 0; i < numOfMoves; i++)
{ {
Move m = moves[i].move; m = moves[i].move;
if (m == ttMove) if (m == ttMove)
moves[i].score = 2*HistoryMax; hs = 2*HistoryMax;
else if (!pos.square_is_empty(move_to(m))) else if (!pos.square_is_empty(move_to(m)))
{ hs = int(pos.midgame_value_of_piece_on(move_to(m)))
int seeScore = pos.see(m); -int(pos.type_of_piece_on(move_from(m))) + HistoryMax;
moves[i].score = (seeScore >= 0)? seeScore + HistoryMax : seeScore; else
} else hs = H.move_ordering_score(pos.piece_on(move_from(m)), m);
moves[i].score = H.move_ordering_score(pos.piece_on(move_from(m)), m);
moves[i].score = hs;
} }
// FIXME try psqt also here
} }
void MovePicker::score_qcaptures() { void MovePicker::score_qcaptures() {