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stockfish
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Revert previous fix 

It seems to intorduce a regression when tested
with 3 threads at 15+0.05:

ELO: -2.26 +-2.2 (95%) LOS: 2.4%
Total: 30000 W: 4813 L: 5008 D: 20179

bench: 8331357
sf_dd_base
Marco Costalba 2013-11-19 07:19:28 +01:00
parent 691ed425ba
commit dbd6156fce
1 changed files with 2 additions and 2 deletions
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4
src/search.cpp
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@ -499,7 +499,6 @@ namespace {
// Step 1. Initialize node
Thread* thisThread = pos.this_thread();
inCheck = pos.checkers();
excludedMove = ss->excludedMove;
if (SpNode)
{
@ -508,7 +507,7 @@ namespace {
threatMove = splitPoint->threatMove;
bestValue = splitPoint->bestValue;
tte = NULL;
ttMove = MOVE_NONE;
ttMove = excludedMove = MOVE_NONE;
ttValue = VALUE_NONE;
assert(splitPoint->bestValue > -VALUE_INFINITE && splitPoint->moveCount > 0);
@ -548,6 +547,7 @@ namespace {
// Step 4. Transposition table lookup
// We don't want the score of a partial search to overwrite a previous full search
// TT value, so we use a different position key in case of an excluded move.
excludedMove = ss->excludedMove;
posKey = excludedMove ? pos.exclusion_key() : pos.key();
tte = TT.probe(posKey);
ttMove = RootNode ? RootMoves[PVIdx].pv[0] : tte ? tte->move() : MOVE_NONE;