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Fix score_captures() for the case of capture promotions

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In case we have more than one promotion move, prefer
the one that captures the biggest piece.

Almost no functional change, anyhow I don't expect any
ELO change, it is just the correct thing to do.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba 2011-06-11 22:11:17 +01:00
parent 89ec224cb9
commit 4b8a7f2793
1 changed files with 4 additions and 4 deletions
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6
src/movepick.cpp
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@ -224,11 +224,11 @@ void MovePicker::score_captures() {
for (MoveStack* cur = moves; cur != lastMove; cur++) for (MoveStack* cur = moves; cur != lastMove; cur++)
{ {
m = cur->move; m = cur->move;
if (move_is_promotion(m))
cur->score = QueenValueMidgame;
else
cur->score = pos.midgame_value_of_piece_on(move_to(m)) cur->score = pos.midgame_value_of_piece_on(move_to(m))
- pos.type_of_piece_on(move_from(m)); - pos.type_of_piece_on(move_from(m));
if (move_is_promotion(m))
cur->score += QueenValueMidgame;
} }
} }