Legality testing (mandatory capture) in giveaway variants

[xboard.git] / parser.l

diff --git a/parser.l b/parser.l
index ca41c63..29a2fa9 100755 (executable)
--- a/parser.l
+++ b/parser.l
@@ -243,7 +243,8 @@ extern void CopyBoard P((Board to, Board from));
       return (int) IllegalMove;\r
 \r
     result = LegalityTest(boards[yyboardindex],\r
-                         PosFlags(yyboardindex), EP_UNKNOWN,\r
+                         PosFlags(yyboardindex)&~F_MANDATORY_CAPTURE, // [HGM] losers: might think we can e.p.!\r
+                         EP_UNKNOWN,\r
                           initialRights, /* [HGM] assume all castlings allowed */\r
                           currentMoveString[1] - ONE,\r
                           currentMoveString[0] - AAA,\r
@@ -304,7 +305,8 @@ extern void CopyBoard P((Board to, Board from));
       return 0;\r
 \r
     result = LegalityTest(boards[yyboardindex],\r
-                         PosFlags(yyboardindex), EP_UNKNOWN,\r
+                         PosFlags(yyboardindex)&~F_MANDATORY_CAPTURE, // [HGM] losers: might think we can e.p.!\r
+                         EP_UNKNOWN,\r
                           initialRights, /* [HGM] assume all castlings allowed */\r
                           currentMoveString[1] - ONE,\r
                           currentMoveString[0] - AAA,\r
@@ -485,7 +487,8 @@ extern void CopyBoard P((Board to, Board from));
     }\r
 \r
     result = LegalityTest(boards[yyboardindex],\r
-                         PosFlags(yyboardindex), EP_UNKNOWN,\r
+                         PosFlags(yyboardindex)&~F_MANDATORY_CAPTURE, // [HGM] losers: might think we can e.p.!\r
+                         EP_UNKNOWN,\r
                           initialRights, /* [HGM] assume all castlings allowed */\r
                           currentMoveString[1] - ONE,\r
                           currentMoveString[0] - AAA,\r
@@ -525,7 +528,8 @@ extern void CopyBoard P((Board to, Board from));
     }\r
 \r
     result = LegalityTest(boards[yyboardindex],\r
-                         PosFlags(yyboardindex), EP_UNKNOWN,\r
+                         PosFlags(yyboardindex)&~F_MANDATORY_CAPTURE, // [HGM] losers: might think we can e.p.!\r
+                         EP_UNKNOWN,\r
                           initialRights, /* [HGM] assume all castlings allowed */\r
                           currentMoveString[1] - ONE,\r
                           currentMoveString[0] - AAA,\r
@@ -706,7 +710,8 @@ extern void CopyBoard P((Board to, Board from));
         fprintf(debugFP, "long castling %d %d\n", ff, ft);\r
     }\r
     return (int) LegalityTest(boards[yyboardindex],\r
-                             PosFlags(yyboardindex), EP_UNKNOWN,\r
+                             PosFlags(yyboardindex)&~F_MANDATORY_CAPTURE, // [HGM] losers: e.p.!\r
+                             EP_UNKNOWN,\r
                               castlingRights[yyboardindex], /* [HGM] use true castling rights */\r
                              rf, ff, rt, ft, NULLCHAR);\r
 }\r
@@ -762,7 +767,8 @@ extern void CopyBoard P((Board to, Board from));
     }\r
 \r
     return (int) LegalityTest(boards[yyboardindex],\r
-                              PosFlags(yyboardindex), EP_UNKNOWN,\r
+                             PosFlags(yyboardindex)&~F_MANDATORY_CAPTURE, // [HGM] losers: e.p.!\r
+                             EP_UNKNOWN,\r
                               castlingRights[yyboardindex], /* [HGM] use true castling rights */\r
                              rf, ff, rt, ft, NULLCHAR);\r
 }\r