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Fix disambiguation bug in move_to_san()

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A pinned piece cannot move and so does not play any role
in SAN disambiguation.

Reported by Steven Edwards.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2011-12-04 12:24:15 +01:00
parent 5b8ca1eee7
commit 11a7980976
1 changed files with 4 additions and 0 deletions
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4
src/move.cpp
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@@ -106,6 +106,10 @@ const string move_to_san(Position& pos, Move m) {
{ {
sq = pop_1st_bit(&attackers); sq = pop_1st_bit(&attackers);
// Pinned pieces are not included in the possible sub-set
if (!pos.pl_move_is_legal(make_move(sq, to), pos.pinned_pieces()))
continue;
if (file_of(sq) == file_of(from)) if (file_of(sq) == file_of(from))
ambiguousFile = true; ambiguousFile = true;