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Fix best move lookup bug

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If the uci option 'Best Book Move' is set to true the lookup still
returns a move at random instead of the move with the highest
weight.

No functional change.
This commit is contained in:
Raminder Singh 2013-09-25 18:47:59 +05:30 • committed by Marco Costalba
parent b742a3f29a
commit e654209211
1 changed files with 1 additions and 1 deletions
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2
src/book.cpp
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@ -413,7 +413,7 @@ Move PolyglotBook::probe(const Position& pos, const string& fName, bool pickBest
// Choose book move according to its score. If a move has a very
// high score it has higher probability to be choosen than a move
// with lower score. Note that first entry is always chosen.
if ( (sum && rkiss.rand<unsigned>() % sum < e.count)
if ( (!pickBest && sum && rkiss.rand<unsigned>() % sum < e.count)
|| (pickBest && e.count == best))
move = Move(e.move);
}