Computer Chess Club Archives




Subject: Re: Unusual Mate in 3 Typo

Author: Terry McCracken

Date: 22:03:48 03/01/06

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On March 02, 2006 at 01:01:17, Terry McCracken wrote:

>On March 02, 2006 at 00:26:08, Charles Roberson wrote:
>>  Came across this position by accident browsing chess club web sites.
>>  It comes from the Duke University Chess Club. The position is
>>  1r5k/4NP1b/7K/8/6R1/8/8/8 w - - 0 1
>>  Telepath found the mate in 4 but could not find the mate in 3.
>>  After some debugging I found out why!!!
>>  Just before the final ply in the mate in 3, Telepath announced insufficent
>>  material which is true. But in this position you can mate with insufficient
>>  material.
>>  It put such a smile on my face, I had to share it.
>>  Maybe some of you have the same logic flaw in your code.
>I'm glad u fixed your code. I found mate in 3 myself instantly. I've only gave
>it to Chessmaster 9000 and it finds it instantly as well.
>1.Rg8+!..Rxg8 (1..Bxg8 2.Ng6#) 2.f7xg8Q+..Bxg8 3.Ng6#

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