Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Sorry,The positions are illegal

Author: Kevin Miller

Date: 09:57:36 12/26/00

Go up one level in this thread


On December 25, 2000 at 09:11:09, Vincent Lejeune wrote:

>On December 25, 2000 at 08:08:12, Uri Blass wrote:
>
>>On December 25, 2000 at 07:13:44, Uri Blass wrote:
>>
>>>On December 24, 2000 at 18:01:44, Fernando Villegas wrote:
>>>
>>>>On December 24, 2000 at 17:11:48, Howard Exner wrote:
>>>>
>>>>>White to mate by completing the tree.
>>>>>
>>>>>[D]4k3/Q7/3pKp2/2pPPPp1/2pPPPp1/1pnrqrnp/4b3/4b3 w - -
>>>>
>>>>
>>>>My God, how difficult! Can you give me a clue? :-))
>>>
>>>Here is a hint
>>>
>>>Qa3 is the wrong direction and it leads to a draw by perpetual check(It is also
>>>possible that white wins and that I have a mistake in the analysis because I did
>>>not use more than some minutes to analyze it).
>>>
>>>1.Qa3 Kd8 2.Qa8+ Kc7 3.Qa7+ Kc8 4.Qa6+ Kb8 5.Qb6+ Kc8(Ka8 is a blunder and white
>>>wins by Kd7)
>>>
>>>I think that the position after 5...Ka8 is a good test position for chess
>>>programs.
>>>
>>>How much time does your engine need to find Kd7?
>>>
>>>
>>>[D]k7/8/1Q1pKp2/2pPPPp1/2pPPPp1/1pnrqrnp/4b3/4b3 w - - 0 1
>>>
>>>Uri
>>
>>My position is illegal like the original position.
>>White cannot have 2 pawns in the same file without capturing black's pieces and
>>black has all the 16 pieces based on the diagram.
>>
>>Uri
>
>It's what one could called a Christmas Miracle ;)))

The Immaculate Deception?




This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.