X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fsearch.cpp;h=3dfd5d6de96e49289f7071602c7a05ff747c490e;hp=9eeafbdaf22173053c0f7dd3d0f7b64207053b15;hb=5596492f6ed72ebc52a4d0f65bed483568e48918;hpb=8493c8c6b8da07a454adcaa160af8e8aa3d6b525

diff --git a/src/search.cpp b/src/search.cpp
index 9eeafbda..3dfd5d6d 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -801,13 +801,12 @@ namespace {
     }
 
     // Step 10. Internal iterative deepening (skipped when in check)
-    if (    depth >= (PvNode ? 5 * ONE_PLY : 8 * ONE_PLY)
+    if (    depth >= 6 * ONE_PLY
         && !ttMove
         && (PvNode || ss->staticEval + 256 >= beta))
     {
-        Depth d = depth - 2 * ONE_PLY - (PvNode ? DEPTH_ZERO : depth / 4);
         ss->skipEarlyPruning = true;
-        search<NT>(pos, ss, alpha, beta, d, cutNode);
+        search<NT>(pos, ss, alpha, beta, 3 * depth / 4 - 2 * ONE_PLY, cutNode);
         ss->skipEarlyPruning = false;
 
         tte = TT.probe(posKey, ttHit);