X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fsearch.cpp;h=e113068c408561c402f47513e685bb1b874b25a4;hb=d2274e609c28e46a24deee55b05684197d369976;hp=8a32e827488739ea351a4ee77d0532138b578ffa;hpb=9315ba60e68198452940a57292f27e37bc3b6ed2;p=stockfish

diff --git a/src/search.cpp b/src/search.cpp
index 8a32e827..e113068c 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -187,6 +187,7 @@ void Search::clear() {
   Time.availableNodes = 0;
   TT.clear();
   Threads.clear();
+  Tablebases::init(Options["SyzygyPath"]); // Free up mapped files
 }
 
 
@@ -943,10 +944,8 @@ moves_loop: // When in check, search starts from here
                &&  pos.see_ge(move))
           extension = ONE_PLY;
 
-      // Extension for king moves that change castling rights
-      if (   type_of(movedPiece) == KING
-          && pos.can_castle(us)
-          && depth < 12 * ONE_PLY)
+      else if (   pos.can_castle(us) // Extension for king moves that change castling rights
+               && type_of(movedPiece) == KING)
           extension = ONE_PLY;
 
       // Calculate new depth for this move