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Merge exclusion search conditions

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No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2012-07-14 12:18:14 +01:00
parent 6e5a334c95
commit 5dc0df8435
1 changed files with 11 additions and 12 deletions
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7
src/search.cpp
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@@ -874,9 +874,8 @@ split_point_start: // At split points actual search starts from here
if ( singularExtensionNode if ( singularExtensionNode
&& !ext && !ext
&& move == ttMove && move == ttMove
&& pos.pl_move_is_legal(move, ci.pinned)) && pos.pl_move_is_legal(move, ci.pinned)
{ && abs(ttValue) < VALUE_KNOWN_WIN)
if (abs(ttValue) < VALUE_KNOWN_WIN)
{ {
Value rBeta = ttValue - int(depth); Value rBeta = ttValue - int(depth);
ss->excludedMove = move; ss->excludedMove = move;
@@ -884,10 +883,10 @@ split_point_start: // At split points actual search starts from here
value = search<NonPV>(pos, ss, rBeta - 1, rBeta, depth / 2); value = search<NonPV>(pos, ss, rBeta - 1, rBeta, depth / 2);
ss->skipNullMove = false; ss->skipNullMove = false;
ss->excludedMove = MOVE_NONE; ss->excludedMove = MOVE_NONE;
if (value < rBeta) if (value < rBeta)
ext = ONE_PLY; ext = ONE_PLY;
} }
}
// Update current move (this must be done after singular extension search) // Update current move (this must be done after singular extension search)
newDepth = depth - ONE_PLY + ext; newDepth = depth - ONE_PLY + ext;