Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Importance of TBs once more!(an example to mistake of computer)

Author: blass uri

Date: 03:05:55 10/13/98

Go up one level in this thread



On October 13, 1998 at 05:54:00, blass uri wrote:

>
>On October 13, 1998 at 04:34:00, Amir Ban wrote:
>
>>On October 13, 1998 at 02:12:24, Jouni Uski wrote:
>>
>>>In SSDF game archive there is 5834 games. In 21 games there is KQ-KR ending.
>>>And 20 of these were won by Q side WITHOUT any use of TBs! Quite surprising -
>>>isn't this normally considered as difficult ending?
>>
>>I've never seen this ending in a computer-computer game where the side with the
>>queen failed to win, at any time control.
>>
>>This endgame is quite easy for a computer.
>
>Is it easy when the defendor use tablebases?
>
>I found that the defendor without tablebases(when the defendor is a computer
>program) may miss a simple draw by perpetual check in positions when there is
>black queen at f2 and white king at h1.

Here is an example

7R/8/8/8/8/k7/5q2/7K white to move and draw
Fritz5(without tablebases) plays Rg8 and Junior5(16 bit) Rh3+
when Ra8+ is the only way to draw.

Uri


>
>Uri
>>
>>Amir



This page took 0.01 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.