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Use std library to sort moves

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Functional change due to the fact that now pick_best() is
stable, but should be no change in strenght.

Example code and ideas by Rein Halbersma.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2011-07-14 12:12:49 +01:00
parent 0cfb30e5be
commit fbdabe2975
5 changed files with 36 additions and 82 deletions
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8
src/position.cpp
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@@ -513,14 +513,14 @@ bool Position::pl_move_is_legal(Move m, Bitboard pinned) const {
assert(piece_color(piece_on(from)) == us);
assert(piece_on(king_square(us)) == make_piece(us, KING));
// En passant captures are a tricky special case. Because they are
// rather uncommon, we do it simply by testing whether the king is attacked
// after the move is made
// En passant captures are a tricky special case. Because they are rather
// uncommon, we do it simply by testing whether the king is attacked after
// the move is made.
if (move_is_ep(m))
{
Color them = opposite_color(us);
Square to = move_to(m);
Square capsq = make_square(square_file(to), square_rank(from));
Square capsq = to + Square(us == WHITE ? -8 : 8);
Square ksq = king_square(us);
Bitboard b = occupied_squares();