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Tweak best thread selection logic

Browse source 
STC 7 threads:
LLR: 2.96 (-2.94,2.94) [0.00,5.00]
Total: 26881 W: 4161 L: 3941 D: 18779
http://tests.stockfishchess.org/tests/view/58667a830ebc5903140c632f

LTC 7 threads:
LLR: 2.95 (-2.94,2.94) [0.00,5.00]
Total: 22988 W: 2767 L: 2583 D: 17638
http://tests.stockfishchess.org/tests/view/586722690ebc5903140c636d

bench: 5468995
This commit is contained in:
Jonathan Calovski 2017-01-01 02:09:22 +11:00 • committed by Marco Costalba
parent e258c5a779
commit 1052ce74f6
1 changed files with 7 additions and 2 deletions
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9
src/search.cpp
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@ -312,9 +312,14 @@ void MainThread::search() {
&& rootMoves[0].pv[0] != MOVE_NONE)
{
for (Thread* th : Threads)
if ( th->completedDepth > bestThread->completedDepth
&& th->rootMoves[0].score > bestThread->rootMoves[0].score)
{
Depth depthDiff = th->completedDepth - bestThread->completedDepth;
Value scoreDiff = th->rootMoves[0].score - bestThread->rootMoves[0].score;
if ( (depthDiff > 0 && scoreDiff >= 0)
|| (scoreDiff > 0 && depthDiff >= 0))
bestThread = th;
}
}
previousScore = bestThread->rootMoves[0].score;