bugXBoard - Bugs: bug #15652, Problem with FEN mate position

 
 

bug #15652: Problem with FEN mate position

Submitter:  None
Submitted:  Tue 07 Feb 2006 02:32:42 PM UTC
 
Category:  None Severity:  3 - Normal
Item Group:  None Status:  Invalid
Assigned to:  None Open/Closed:  Closed
Release:  None
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Wed 09 Apr 2008 03:48:12 PM UTC, comment #1: 

That appears to be a Crafty bug.  Also, I can't reproduce it.

Tim Mann <mann>
Project Administrator
Tue 07 Feb 2006 02:32:42 PM UTC, original submission:  

When I load the following FEN position file into Xboard and using Crafty, the engine goes crazy:

8/8/4K3/8/8/8/8/kq6 b - - 0 1
8/8/8/8/8/7R/5K2/7k b - - 0 1

On loading the first position, everything is fine. Then I go to the next position via the NextPosition Command in Xboard and then Crafty goes bezerk, stalling the system due to heavy disk access, and its log file goes to 1 GByte containing this (repeatedly):

Black(1): new
White(1): random
White(1): level 40 5 0
40 moves/5 minutes primary time control
40 moves/5 minutes secondary time control
White(1): hard
pondering enabled.
White(1): ping 6
pong 6
White(1): force
White(1): setboard 8/8/8/8/8/7R/5K2/7k b - - 0 1

       +---+---+---+---+---+---+---+---+
    8  |   | . |   | . |   | . |   | . |
       +---+---+---+---+---+---+---+---+
    7  | . |   | . |   | . |   | . |   |
       +---+---+---+---+---+---+---+---+
    6  |   | . |   | . |   | . |   | . |
       +---+---+---+---+---+---+---+---+
    5  | . |   | . |   | . |   | . |   |
       +---+---+---+---+---+---+---+---+
    4  |   | . |   | . |   | . |   | . |
       +---+---+---+---+---+---+---+---+
    3  | . |   | . |   | . |   | . |-R-|
       +---+---+---+---+---+---+---+---+
    2  |   | . |   | . |   |-K-|   | . |
       +---+---+---+---+---+---+---+---+
    1  | . |   | . |   | . |   | . |<K>|
       +---+---+---+---+---+---+---+---+
         a   b   c   d   e   f   g   h

Black(1): undo

       +---+---+---+---+---+---+---+---+
    8  |   | . |   | . |   | . |   | . |
       +---+---+---+---+---+---+---+---+
    7  | . |   | . |   | . |   | . |   |
       +---+---+---+---+---+---+---+---+
    6  |   | . |   | . |   | . |   | . |
       +---+---+---+---+---+---+---+---+
    5  | . |   | . |   | . |   | . |   |
       +---+---+---+---+---+---+---+---+
    4  |   | . |   | . |   | . |   | . |
       +---+---+---+---+---+---+---+---+
    3  | . |   | . |   | . |   | . |-R-|
       +---+---+---+---+---+---+---+---+
    2  |   | . |   | . |   |-K-|   | . |
       +---+---+---+---+---+---+---+---+
    1  | . |   | . |   | . |   | . |<K>|
       +---+---+---+---+---+---+---+---+
         a   b   c   d   e   f   g   h

ERROR side not on move is in check!

       +---+---+---+---+---+---+---+---+
    8  |   | . |   | . |   | . |   | . |
       +---+---+---+---+---+---+---+---+
    7  | . |   | . |   | . |   | . |   |
       +---+---+---+---+---+---+---+---+
    6  |   | . |   | . |   | . |   | . |
       +---+---+---+---+---+---+---+---+
    5  | . |   | . |   | . |   | . |   |
       +---+---+---+---+---+---+---+---+
    4  |   | . |   | . |   | . |   | . |
       +---+---+---+---+---+---+---+---+
    3  | . |   | . |   | . |   | . |-R-|
       +---+---+---+---+---+---+---+---+
    2  |   | . |   | . |   |-K-|   | . |
       +---+---+---+---+---+---+---+---+
    1  | . |   | . |   | . |   | . |<K>|
       +---+---+---+---+---+---+---+---+
         a   b   c   d   e   f   g   h

ERROR side not on move is in check!

I have no idea what causes this fatal loop...

Anonymous

 

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  • -email is unavailable- added by mann (Posted a comment)
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    Date Changed by Updated Field Previous Value => Replaced by
    2008-04-09 mann StatusNone Invalid
        Open/ClosedOpen Closed

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