X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fposition.h;h=55dc33feee917ea380f20110b4e5f27e0a527e3b;hp=d0087c3ba1c61968242de69b2d0858ea256fe179;hb=6828325881eb823ddfb2e6ea72122c3a4576d240;hpb=b9bc6e823f061753419e563c4f923e60bd8c6193

diff --git a/src/position.h b/src/position.h
index d0087c3b..55dc33fe 100644
--- a/src/position.h
+++ b/src/position.h
@@ -60,6 +60,14 @@ struct StateInfo {
   StateInfo* previous;
 };
 
+struct ReducedStateInfo {
+  Key pawnKey, materialKey;
+  Value npMaterial[2];
+  int castleRights, rule50, pliesFromNull;
+  Score psqScore;
+  Square epSquare;
+};
+
 
 /// The position data structure. A position consists of the following data:
 ///
@@ -302,7 +310,7 @@ inline int Position::can_castle(CastleRight f) const {
 }
 
 inline int Position::can_castle(Color c) const {
-  return st->castleRights & ((WHITE_OO | WHITE_OOO) << c);
+  return st->castleRights & ((WHITE_OO | WHITE_OOO) << (2 * c));
 }
 
 inline bool Position::castle_impeded(Color c, CastlingSide s) const {