Bench: 20701656

TerjeKir · Sep 10, 2023 · 28b0624 · 28b0624
1 parent 949d4e7
commit 28b0624
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/search.c b/src/search.c
@@ -314,6 +314,9 @@ static int AlphaBeta(Thread *thread, Stack *ss, int alpha, int beta, Depth depth
     if (inCheck || pvNode || !thread->doPruning || ss->excluded || abs(beta) >= TBWIN_IN_MAX || history(-1).move == NOMOVE)
         goto move_loop;
 
+    if (ttHit && ttScore <= alpha && ttBound != BOUND_LOWER && ttDepth >= depth)
+        depth--;
+
     // Reverse Futility Pruning
     if (   depth < 7
         && eval >= beta