Further increase SEE prune depth

After 16000 games at 60+0.05 ELO: 2.89 +-5.4 (95%) LOS: 96.5% Total: 16000 W: 2775 L: 2642 D: 10583 bench: 5442365
official-stockfish · Mar 16, 2013 · 0586b51 · 0586b51
1 parent d2eeef8
commit 0586b51
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/search.cpp b/src/search.cpp
@@ -885,7 +885,7 @@ namespace {
           }
 
           // Prune moves with negative SEE at low depths
-          if (   predictedDepth < 3 * ONE_PLY
+          if (   predictedDepth < 4 * ONE_PLY
               && pos.see_sign(move) < 0)
           {
               if (SpNode)