Simplify PV node reduction

Reduce less on PV nodes even with an upperbound TT entry.
official-pikafish · Feb 17, 2024 · 2757269 · 2757269
1 parent 129fbd3
commit 2757269
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/search.cpp b/src/search.cpp
@@ -1002,7 +1002,7 @@ Value Search::Worker::search(
             r++;
 
         // Decrease reduction for PvNodes (~3 Elo)
-        if (PvNode && tte->bound() != BOUND_UPPER)
+        if (PvNode)
             r--;
 
         // Increase reduction if next ply has a lot of fail high (~5 Elo)