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Test removal of razoring. Bench: 4573100
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vondele committed Nov 9, 2019
1 parent 9f312c8 commit fa51d25
Showing 1 changed file with 0 additions and 6 deletions.
6 changes: 0 additions & 6 deletions src/search.cpp
Expand Up @@ -784,12 +784,6 @@ namespace {
tte->save(posKey, VALUE_NONE, ttPv, BOUND_NONE, DEPTH_NONE, MOVE_NONE, eval);
}

// Step 7. Razoring (~2 Elo)
if ( !rootNode // The required rootNode PV handling is not available in qsearch
&& depth < 2
&& eval <= alpha - RazorMargin)
return qsearch<NT>(pos, ss, alpha, beta);

improving = ss->staticEval >= (ss-2)->staticEval
|| (ss-2)->staticEval == VALUE_NONE;

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