Allow for general transposition table sizes. (#1341)

[stockfish] / src / search.cpp

diff --git a/src/search.cpp b/src/search.cpp
index 8b3b8fb4864436c17c6964a24151a85db92f873f..1aa3e92e69487b51e504acebc5e1127bb2b6f033 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -557,7 +557,7 @@ namespace {
     // search to overwrite a previous full search TT value, so we use a different
     // position key in case of an excluded move.
     excludedMove = ss->excludedMove;
-    posKey = pos.key() ^ Key(excludedMove);
+    posKey = pos.key() ^ Key(excludedMove << 16); // isn't a very good hash
     tte = TT.probe(posKey, ttHit);
     ttValue = ttHit ? value_from_tt(tte->value(), ss->ply) : VALUE_NONE;
     ttMove =  rootNode ? thisThread->rootMoves[thisThread->PVIdx].pv[0]