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

 
 

bug #15652: Problem with FEN mate position

Submitted by:  None
Submitted on:  Tue 07 Feb 2006 02:32:42 PM UTC  
 
Category: NoneSeverity: 3 - Normal
Item Group: NoneStatus: Invalid
Assigned to: NoneOpen/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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    Date Changed By Updated Field Previous Value => Replaced By
    Wed 09 Apr 2008 03:48:12 PM UTCmannStatusNone=>Invalid
      Open/ClosedOpen=>Closed

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