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Fix ep move for real this time

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This commit is contained in:
Marco Costalba 2016-05-21 21:49:22 +02:00
parent db8112ec9e
commit 8925a28cf1
1 changed files with 5 additions and 5 deletions
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10
src/syzygy/tbprobe.cpp
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@ -1265,12 +1265,12 @@ WDLScore search(Position& pos, WDLScore alpha, WDLScore beta, ProbeState* result
if (epValue != WDLScoreNone && !moveCount) if (epValue != WDLScoreNone && !moveCount)
value = epValue; value = epValue;
// Here alpha stores the best value out of the previous search // Here alpha stores the best value of the ply-1 search, note that in case
if (value > alpha) // we only have a losing ep move alpha == value.
return *result = (value == epValue ? ZEROING_MOVE : OK), value; if (alpha >= value)
return *result = (alpha > WDLDraw || alpha == epValue ? ZEROING_MOVE : OK), alpha;
*result = alpha > WDLDraw ? ZEROING_MOVE : OK; return *result = OK, value;
return alpha;
} }
} // namespace } // namespace