Tuning of a Null Move Parameter

[stockfish] / src / search.cpp

diff --git a/src/search.cpp b/src/search.cpp
index 71634c56a8567e634648bad2f7d53fb2436410f3..0aa590f402441e71367c45b340a7bfdc487d9837 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -825,7 +825,7 @@ namespace {
         && (ss-1)->statScore < 23767
         &&  eval >= beta
         &&  eval >= ss->staticEval
-        &&  ss->staticEval >= beta - 20 * depth - improvement / 15 + 177
+        &&  ss->staticEval >= beta - 20 * depth - improvement / 15 + 204
         && !excludedMove
         &&  pos.non_pawn_material(us)
         && (ss->ply >= thisThread->nmpMinPly || us != thisThread->nmpColor))