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George Thomson
Joined: 08 May 2006 Posts: 99
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Posted: Wed Nov 14, 2007 5:24 pm Post subject: Laws and Impossibility |
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| Yes Ian I forgot to say that you contradicted what I thought was a law of chess. I thought that it was Impossible to Checkmate with just a king and Bishop. Your amazing example proved otherwise. |
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robert kelso Site Admin
Joined: 26 May 2006 Posts: 55 Location: Cumbernauld
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Posted: Wed Nov 14, 2007 10:30 pm Post subject: Mate with King and Bishop |
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| George wrote: |
| I thought that it was Impossible to Checkmate with just a king and Bishop. |
I will have to wait for Ian to post the example again to be sure but I thought there was more than just the two kings and a Bishop on the board which is the draw position you are thinking of. _________________ Robert |
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Ian
Joined: 07 May 2006 Posts: 133
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Posted: Fri Nov 16, 2007 1:08 pm Post subject: |
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Hi George
If the K has no flight squares you can checkmate with anything! E.g. WN on f7, BK on h8, BR on g8, BPs on g7 & h7; or WR on h1, BK on h8, BR on g8, BP on g7. Hence you can checkmate with K+B if the other K's escape square is blocked. In the example, the Ph7 prevented flight. A WP on g7 instead of the B would have done the job just as well. You're quite right, of course, that you can't mate with K+B v. lone K. |
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