X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fposition.h;h=c04f1412e5db666ef0ac06f86395171f663abc66;hp=09c630062dd3984ea5a2fcc0ffaa647c7ff4fe2a;hb=975d5e9c6444b3289cb8688d68d17ec9ed2a2285;hpb=f35ddb04af2a00bd9facf5b66ec97e4ab28d4480

diff --git a/src/position.h b/src/position.h
index 09c63006..c04f1412 100644
--- a/src/position.h
+++ b/src/position.h
@@ -63,6 +63,18 @@ const int MaxGameLength = 220;
 //// Types
 ////
 
+/// struct checkInfo is initialized at c'tor time and keeps
+/// info used to detect if a move gives check.
+
+struct CheckInfo {
+
+    CheckInfo(const Position&);
+
+    Square ksq;
+    Bitboard dcCandidates;
+    Bitboard checkSq[8];
+};
+
 /// Castle rights, encoded as bit fields
 
 enum CastleRights {
@@ -206,7 +218,7 @@ public:
   bool pl_move_is_legal(Move m, Bitboard pinned) const;
   bool pl_move_is_evasion(Move m, Bitboard pinned) const;
   bool move_is_check(Move m) const;
-  bool move_is_check(Move m, Bitboard dcCandidates) const;
+  bool move_is_check(Move m, const CheckInfo& ci) const;
   bool move_is_capture(Move m) const;
   bool move_is_capture_or_promotion(Move m) const;
   bool move_is_passed_pawn_push(Move m) const;