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Fix broken multi-pv with aspiration window search

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Aspiration window search must be disabled for
multi-pv case.

We missed one point where aspiration window should
be disabled in this case.

Patch from Joona, with a little added edit by me.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba 2009-05-15 09:39:36 +02:00
parent 9c428afb6d
commit 8df816f869
1 changed files with 4 additions and 0 deletions
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4
src/search.cpp
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@ -890,6 +890,10 @@ namespace {
if (i < MultiPV)
{
// Aspiration window is disabled in multi-pv case
if (MultiPV > 1)
alpha = -VALUE_INFINITE;
value = -search_pv(pos, ss, -beta, -alpha, newDepth, 1, 0);
// If the value has dropped a lot compared to the last iteration,
// set the boolean variable Problem to true. This variable is used