tt: Change tt condition

calcitem · May 7, 2024 · c4fa810 · c4fa810
1 parent d53c654
commit c4fa810
Showing 1 changed file with 5 additions and 4 deletions.
diff --git a/src/search.cpp b/src/search.cpp
@@ -402,10 +402,11 @@ Value qsearch(Position *pos, Sanmill::Stack<Position> &ss, Depth depth,
 #ifdef TRANSPOSITION_TABLE_DEBUG
         Threads.main()->ttHitCount++;
 #endif
-
-        bestValue = probeVal;
-
-        return bestValue;
+        if (type == BOUND_EXACT || (type == BOUND_LOWER && probeVal >= beta) ||
+            (type == BOUND_UPPER && probeVal <= alpha)) {
+            bestValue = probeVal;
+            return bestValue;
+        }
     }
 #ifdef TRANSPOSITION_TABLE_DEBUG
     if (probeVal == VALUE_UNKNOWN) {