Fix a skill level problem: Don't allow move pruning at root node

Bench: 8918745 Resolves #231
mcostalba · Jan 25, 2015 · d8b3ad2 · d8b3ad2
1 parent ec36b8d
commit d8b3ad2
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/search.cpp b/src/search.cpp
@@ -831,7 +831,8 @@ namespace {
       newDepth = depth - ONE_PLY + extension;
 
       // Step 13. Pruning at shallow depth
-      if (   !captureOrPromotion
+      if (   !RootNode
+          && !captureOrPromotion
           && !inCheck
           && !dangerous
           &&  bestValue > VALUE_MATED_IN_MAX_PLY)