From: Joona Kiiski <joona.kiiski@gmail.com>
Date: Sat, 30 Mar 2013 20:01:49 +0000 (+0000)
Subject: Make use of asymmetric SEE
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=7bad50773a65c45b0b3f88eca7eddc6aa0f7f174;ds=sidebyside

Make use of asymmetric SEE
---

diff --git a/src/search.cpp b/src/search.cpp
index 60667c87..ab346734 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1228,7 +1228,7 @@ split_point_start: // At split points actual search starts from here
           // Prune moves with negative or equal SEE
           if (   futilityBase < beta
               && depth < DEPTH_ZERO
-              && pos.see(move) <= 0)
+              && pos.see_asymm(move, beta - futilityBase) <= 0)
           {
               bestValue = std::max(bestValue, futilityBase);
               continue;