Fix bridge capture of Lions

Clearing the kill square for the check test had broken the test for it
being empty or containing a Pawn. We now also test for Go Between,
which was not done at all.

diff --git a/moves.c b/moves.c
index 4158ea5..b5b6ffe 100644 (file)
--- a/moves.c
+++ b/moves.c
@@ -1673,10 +1673,11 @@ CheckTest (Board board, int flags, int rf, int ff, int rt, int ft, int enPassant
        }
        ep = board[EP_STATUS];
        if( captured == WhiteLion || captured == BlackLion ) { // [HGM] lion: Chu Lion-capture rules
-           ChessSquare victim = killX < 0 ? EmptySquare : trampled;
+           ChessSquare victim = saveKill < 0 ? EmptySquare : trampled;
            if( (board[rt][ft] == WhiteLion || board[rt][ft] == BlackLion) &&           // capturer is Lion
                (ff - ft > 1 || ft - ff > 1 || rf - rt > 1 || rt - rf > 1) &&           // captures from a distance
-               (victim == EmptySquare || victim == WhitePawn || victim == BlackPawn) ) // no or worthless 'bridge'
+               (victim == EmptySquare || victim == WhitePawn || victim == BlackPawn    // no or worthless 'bridge'
+                                    || victim == WhiteCobra || victim == BlackCobra) ) // (Pawn or Go Between)
                     board[EP_STATUS] = EP_ROYAL_LION; // on distant Lion x Lion victim must not be pseudo-legally protected
        }
     }