Use a flag in TT to track null search values

[stockfish] / src / search.cpp

diff --git a/src/search.cpp b/src/search.cpp
index fd5687ea9714ab625bbc8a6cf106003ab293bb34..cd874ff816156bfcfd036c65de3443a917325341 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1388,7 +1388,7 @@ namespace {
             {
                 assert(value_to_tt(nullValue, ply) == nullValue);
 
-                TT.store(posKey, nullValue, VALUE_TYPE_LOWER, depth, MOVE_NONE);
+                TT.store(posKey, nullValue, VALUE_TYPE_NS_LO, depth, MOVE_NONE);
                 return nullValue;
             }
         } else {