Reply
 
LinkBack Thread Tools Display Modes
  #1   Report Post  
Old August 26th 12, 09:21 AM posted to alt.chess
abc abc is offline
external usenet poster
 
First recorded activity by ChessBanter: Sep 2010
Posts: 14
Default Chess question


What's the biggest material advantage that cannot mate against a lone king?
abc
  #2   Report Post  
Old August 27th 13, 06:37 AM posted to alt.chess
external usenet poster
 
First recorded activity by ChessBanter: Apr 2005
Posts: 292
Default Chess question

On 2012-08-26, abc wrote:

What's the biggest material advantage that cannot mate against a lone king?


Two knights and a king cannot *force* mate against a lone king,
though a mate is possible.

Otherwise, K+B or K+N cannot mate a lone king.

--
Chris F.A. Johnson http://cfajohnson.com
Author: =======================
Pro Bash Programming: Scripting the GNU/Linux Shell (2009, Apress)
Shell Scripting Recipes: A Problem-Solution Approach (2005, Apress)
  #3   Report Post  
Old August 27th 13, 02:46 PM posted to alt.chess
abc abc is offline
external usenet poster
 
First recorded activity by ChessBanter: Aug 2013
Posts: 5
Default Chess question

Chris F.A. Johnson wrote:
On 2012-08-26, abc wrote:

What's the biggest material advantage that cannot mate against a lone king?


Two knights and a king cannot *force* mate against a lone king,
though a mate is possible.

Otherwise, K+B or K+N cannot mate a lone king.


Let's see. The two knights is roughly 600 centipawns, right?
And one Knight or one Bishop is 300 centipawns.

That's a good start, but it is far from the biggest.

And apologies for not being precise. I'll rephrase
the question slightly:

What is the biggest material advantage that can
_never force_ a mate against a lone King, regardless
of position, ie. there are NO positions that can be
set up with that material from which mate can be
forced?

And a second question:

What is the biggest material advantage where a
mate is not possible against a lone King, even
with the cooperation of the opponent, ie. there
are NO positions that can be set up with that
material that are mate or from which mate can
be reached by any sequence of legal moves?

Incidentally, the answer to both questions is
exactly the same.

Got you all thinking now, have I? Or not?

Those of you who knew it from before, please refrain
and don't spoil the fun for the rest of us.
abc
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
Study openings because that is where the game begins The Master rec.games.chess.misc (Chess General) 68 October 4th 11 06:01 PM
Sound and Fury in Polgarland B. Lafferty[_6_] rec.games.chess.politics (Chess Politics) 3 December 15th 08 09:20 AM
Books? Frenki rec.games.chess.misc (Chess General) 4 December 4th 07 03:26 PM


All times are GMT +1. The time now is 05:03 AM.

Powered by vBulletin® Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Copyright 2004-2018 ChessBanter.
The comments are property of their posters.
 

About Us

"It's about Chess"

 

Copyright © 2017