Bench: 23735187

TerjeKir · Dec 15, 2023 · 425d8ca · 425d8ca
1 parent 1eadc03
commit 425d8ca
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/src/search.c b/src/search.c
@@ -251,6 +251,13 @@ static int AlphaBeta(Thread *thread, Stack *ss, int alpha, int beta, Depth depth
 
         // Give a history bonus to quiet tt moves that causes a cutoff
         if (ttScore >= beta && moveIsQuiet(ttMove)) {
+
+            // Update killers
+            if (ss->killers[0] != ttMove) {
+                ss->killers[1] = ss->killers[0];
+                ss->killers[0] = ttMove;
+            }
+
             QuietHistoryUpdate(ttMove, Bonus(depth));
             PawnHistoryUpdate(ttMove, Bonus(depth));
         }