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Fix handling of 50 move rule and remove a fixme

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Signed-off-by: Marco Costalba <mcostalba@gmail.com>
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Marco Costalba
2010-09-25 11:21:24 +01:00
parent 7305b56957
commit a28f4a56d3
1 changed files with 1 additions and 2 deletions
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3
src/position.cpp
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@@ -1677,7 +1677,6 @@ Value Position::compute_non_pawn_material(Color c) const {
/// Position::is_draw() tests whether the position is drawn by material, /// Position::is_draw() tests whether the position is drawn by material,
/// repetition, or the 50 moves rule. It does not detect stalemates, this /// repetition, or the 50 moves rule. It does not detect stalemates, this
/// must be done by the search. /// must be done by the search.
// FIXME: Currently we are not handling 50 move rule correctly when in check
bool Position::is_draw() const { bool Position::is_draw() const {
@@ -1687,7 +1686,7 @@ bool Position::is_draw() const {
return true; return true;
// Draw by the 50 moves rule? // Draw by the 50 moves rule?
if (st->rule50 > 100 || (st->rule50 == 100 && !is_check())) if (st->rule50 > 99 && (st->rule50 > 100 || !is_mate()))
return true; return true;
// Draw by repetition? // Draw by repetition?