Do IIR before probcut (liamt19#59)

bench: 4766328
eduherminio · Aug 15, 2024 · 5bf5cda · 5bf5cda
1 parent 04a3638
commit 5bf5cda
Showing 1 changed file with 10 additions and 10 deletions.
diff --git a/Logic/Search/Searches.cs b/Logic/Search/Searches.cs
@@ -259,6 +259,16 @@ public static int Negamax<NodeType>(Position pos, SearchStackEntry* ss, int alph
             }
 
 
+            if (ttMove.Equals(Move.Null)
+                && (cutNode || isPV)
+                && depth >= ExtraCutNodeReductionMinDepth)
+            {
+                //  We expected this node to be a bad one, so give it an extra depth reduction
+                //  if the depth is at or above a threshold (currently 4).
+                depth--;
+            }
+
+
             //  Try ProbCut for:
             //  non-PV nodes
             //  that aren't a response to a previous singular extension search
@@ -321,16 +331,6 @@ public static int Negamax<NodeType>(Position pos, SearchStackEntry* ss, int alph
             }
 
 
-            if (ttMove.Equals(Move.Null)
-                && (cutNode || isPV)
-                && depth >= ExtraCutNodeReductionMinDepth)
-            {
-                //  We expected this node to be a bad one, so give it an extra depth reduction
-                //  if the depth is at or above a threshold (currently 4).
-                depth--;
-            }
-
-
             MovesLoop:
 
             int legalMoves = 0;     //  Number of legal moves that have been encountered so far in the loop.