X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fsearch.cpp;h=f58baf39661190053d1dc64d01090fbacff1ad56;hp=ab34673463c57286d7ec4047a46755d6fc24701e;hb=a95cbca568ec393ea6b4b17ed86f89c75d7cbe57;hpb=7bad50773a65c45b0b3f88eca7eddc6aa0f7f174

diff --git a/src/search.cpp b/src/search.cpp
index ab346734..f58baf39 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -679,7 +679,7 @@ namespace {
             if (nullValue >= VALUE_MATE_IN_MAX_PLY)
                 nullValue = beta;
 
-            if (depth < 6 * ONE_PLY)
+            if (depth < 12 * ONE_PLY)
                 return nullValue;
 
             // Do verification search at high depths
@@ -1225,10 +1225,11 @@ split_point_start: // At split points actual search starts from here
               continue;
           }
 
-          // Prune moves with negative or equal SEE
+          // Prune moves with negative or equal SEE and also moves with positive
+          // SEE where capturing piece loses a tempo and SEE < beta - futilityBase.
           if (   futilityBase < beta
               && depth < DEPTH_ZERO
-              && pos.see_asymm(move, beta - futilityBase) <= 0)
+              && pos.see(move, beta - futilityBase) <= 0)
           {
               bestValue = std::max(bestValue, futilityBase);
               continue;