Reply
 
LinkBack Thread Tools Display Modes
  #1   Report Post  
Old December 10th 06, 03:47 AM posted to rec.games.chess.computer
external usenet poster
 
First recorded activity by ChessBanter: Dec 2006
Posts: 3
Default May have discovered a bug in Junior 10

It was crushing another computer --- it had a queen, rook and knight vs. the
king--- it chased the black king around the board with 15 straight queen
checks before it announced mate-- very strange for a program of this
caliber.




  #2   Report Post  
Old December 10th 06, 07:56 AM posted to rec.games.chess.computer
external usenet poster
 
First recorded activity by ChessBanter: Dec 2006
Posts: 30
Default May have discovered a bug in Junior 10

Nimzovich fan wrote:
It was crushing another computer --- it had a queen, rook and knight vs. the
king--- it chased the black king around the board with 15 straight queen
checks before it announced mate-- very strange for a program of this
caliber.


Probably, but not a bug that the programmer cares about. This is picked
up by the tablebases.

Many programs will ignore the proper programming of endings like this,
because the work is already done in the tablebases.
  #3   Report Post  
Old December 10th 06, 08:33 AM posted to rec.games.chess.computer
external usenet poster
 
First recorded activity by ChessBanter: Dec 2006
Posts: 3
Default May have discovered a bug in Junior 10


"johnny T" wrote in message
...
Nimzovich fan wrote:
It was crushing another computer --- it had a queen, rook and knight vs.
the king--- it chased the black king around the board with 15 straight
queen checks before it announced mate-- very strange for a program of
this caliber.


Probably, but not a bug that the programmer cares about. This is picked
up by the tablebases.

Many programs will ignore the proper programming of endings like this,
because the work is already done in the tablebases.



Interesting... thanks for the info!


  #4   Report Post  
Old December 11th 06, 10:06 AM posted to rec.games.chess.computer
external usenet poster
 
First recorded activity by ChessBanter: Apr 2005
Posts: 2,598
Default May have discovered a bug in Junior 10

johnny T wrote:
Nimzovich fan wrote:
It was crushing another computer --- it had a queen, rook and
knight vs. the king--- it chased the black king around the board
with 15 straight queen checks before it announced mate-- very
strange for a program of this caliber.


Probably, but not a bug that the programmer cares about. This is
picked up by the tablebases.

Many programs will ignore the proper programming of endings like
this, because the work is already done in the tablebases.


Indeed. You may well find that Junior is unable to mate at all with
knight and bishop without using the tablebases. And why should it?
The engine is designed to be run with tablebases and there's no point
duplicating that functionality, given that more code means more bugs.


Dave.

--
David Richerby Zen Book (TM): it's like a romantic
www.chiark.greenend.org.uk/~davidr/ novel that puts you in touch with
the universe!
Reply
Thread Tools
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Another "Nearly an IM" discovered! The Historian rec.games.chess.politics (Chess Politics) 8 May 31st 06 05:55 AM
Lost Tal Game Discovered [email protected] rec.games.chess.politics (Chess Politics) 1 May 27th 06 07:34 AM
Discovered Checkmate by a pinned bishop alt.chess (Alternative Chess Group) 1 April 30th 04 10:02 PM


All times are GMT +1. The time now is 12:40 PM.

Powered by vBulletin® Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Copyright 2004-2019 ChessBanter.
The comments are property of their posters.
 

About Us

"It's about Chess"

 

Copyright © 2017