Make razor_margin[4] ONE_PLY value independent

No functional change.

diff --git a/src/search.cpp b/src/search.cpp
index b320165..3dc1796 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -729,7 +729,7 @@ namespace {
         &&  eval + razor_margin[depth / ONE_PLY] <= alpha)
     {
         if (   depth <= ONE_PLY
-            && eval + razor_margin[3 * ONE_PLY] <= alpha)
+            && eval + razor_margin[3] <= alpha)
             return qsearch<NonPV, false>(pos, ss, alpha, beta, DEPTH_ZERO);
 
         Value ralpha = alpha - razor_margin[depth / ONE_PLY];