Simplify check extension

[stockfish] / src / search.cpp

diff --git a/src/search.cpp b/src/search.cpp
index 5542fc87366a0923a5f2122ad91144c0def70a1f..fd833b812d9935c5fcdec4ab105b8cce5a689034 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1155,11 +1155,6 @@ moves_loop: // When in check, search starts from here
           }
       }
 
-      // Check extension (~2 Elo)
-      else if (    givesCheck
-               && (pos.is_discovered_check_on_king(~us, move) || pos.see_ge(move)))
-          extension = 1;
-
       // Add extension to new depth
       newDepth += extension;