Simplify opponent movecount reduction

This removes the reduction decrease that occured when the previous ply had a movecount greater than 7.
official-pikafish · Feb 10, 2024 · e4d61f8 · e4d61f8
1 parent 850b28b
commit e4d61f8
Showing 1 changed file with 0 additions and 4 deletions.
diff --git a/src/search.cpp b/src/search.cpp
@@ -997,10 +997,6 @@ Value Search::Worker::search(
         if (ss->ttPv)
             r -= 1 + (ttValue > alpha) + (ttValue > beta && tte->depth() >= depth);
 
-        // Decrease reduction if opponent's move count is high (~1 Elo)
-        if ((ss - 1)->moveCount > 7)
-            r--;
-
         // Increase reduction for cut nodes (~4 Elo)
         if (cutNode)
             r += 2 - (tte->depth() >= depth && ss->ttPv);