bugXBoard - Bugs: bug #18687, Check reported instead of a mate

 
 

bug #18687: Check reported instead of a mate

Submitted by:  None
Submitted on:  Thu 04 Jan 2007 03:06:44 PM UTC  
 
Category: NoneSeverity: 3 - Normal
Item Group: NoneStatus: Fixed
Assigned to: NoneOpen/Closed: Closed
Release: None

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Sat 27 Jun 2009 11:01:21 PM UTC, comment #2:

This has been fixed in the xboard 4.3.x series and the 4.4.0 which we are working on.

Arun Persaud <apersaud>
Project Administrator
Thu 04 Jan 2007 06:30:53 PM UTC, comment #1:

This happens because of a documented limitation: xboard doesn't check whether possible en passant captures are actually legal (i.e., whether or not the pawn to be captured just moved). In the given game, the illegal en passant capture cxd3 would block the check, so xboard thinks the position is not mate yet.

Tim Mann <mann>
Project Administrator
Thu 04 Jan 2007 03:06:44 PM UTC, original submission:

Here is the pgn. Last move is mate not check.

[Event "Edited game"]
[Site "david"]
[Date "2007.01.04"]
[Round "-"]
[White "-"]
[Black "-"]
[Result "*"]

1. d4 e6 2. e3 b6 3. e4 Bb7 4. f3 h6 5. c4 Bb4+ 6. Bd2 Bxd2+ 7. Qxd2 Ne7 8.
Nc3 f5 9. Bd3 O-O 10. O-O-O f4 11. Nge2 g5 12. h4 d5 13. hxg5 hxg5 14. g3
Ng6 15. e5 Ne7 16. gxf4 dxc4 17. Bh7+ Kg7 18. fxg5 Bxf3 19. Rdf1 Bxh1 20.
Nf4 Bd5 21. Ncxd5 Nxd5 22. Nxe6+ Kxh7 23. Rxf8 Qe7 24. Qc2+
*

Anonymous

 

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  • -unavailable- added by apersaud (Posted a comment)
  • -unavailable- added by mann (Posted a comment)
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    Follow 4 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Sat 27 Jun 2009 11:01:20 PM UTCapersaudStatusNone=>Fixed
      Open/ClosedOpen=>Closed
    Mon 11 Aug 2008 12:45:23 AM UTCmannAttached File#16268=>Removed
    Sun 10 Aug 2008 10:23:01 AM UTCNoneAttached File-=>Added bg.jpg, #16268

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