Remove killer move conditions from LMR

STC:
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 8459 W: 1619 L: 1477 D: 5363

LTC:
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 32239 W: 4404 L: 4299 D: 23536

Bench: 7597031

Resolves #534

diff --git a/src/search.cpp b/src/search.cpp
index a35438be610af50cec2db6237a120ee6f00b9ccd..9d091d02bc0cf5467bffac878ae4b5a893fc7621 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -982,9 +982,7 @@ moves_loop: // When in check search starts from here
       // re-searched at full depth.
       if (    depth >= 3 * ONE_PLY
           &&  moveCount > 1
       // re-searched at full depth.
       if (    depth >= 3 * ONE_PLY
           &&  moveCount > 1

-          && !captureOrPromotion
-          &&  move != ss->killers[0]
-          &&  move != ss->killers[1])
+          && !captureOrPromotion)

       {
           ss->reduction = reduction<PvNode>(improving, depth, moveCount);
 
       {
           ss->reduction = reduction<PvNode>(improving, depth, moveCount);