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Bug fix for discovered checks in connected_moves().

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Because of a hard-to-spot single-character bug in connected_moves(),
the discovered check code had no effect whatsoever. The condition
in the if (...) statement at the beginning of the code would always
return false.

Thanks to Edsel Apostol for pointing out this bug!
This commit is contained in:
Tord Romstad
2009-09-02 09:58:15 +02:00
parent 17c5119222
commit 03d6a86900
1 changed files with 1 additions and 1 deletions
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2
src/search.cpp
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@@ -2185,7 +2185,7 @@ namespace {
// Case 5: Discovered check, checking piece is the piece moved in m1
if ( piece_is_slider(pos.piece_on(t1))
&& bit_is_set(squares_between(t1, pos.king_square(pos.side_to_move())), f2)
&& !bit_is_set(squares_between(t2, pos.king_square(pos.side_to_move())), t2))
&& !bit_is_set(squares_between(t1, pos.king_square(pos.side_to_move())), t2))
{
Bitboard occ = pos.occupied_squares();
Color us = pos.side_to_move();