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Subject: Re: Opposite Color bishop ending - ends in a win.

Author: Günther Simon

Date: 17:11:34 08/10/02

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On August 10, 2002 at 18:52:19, Mike Byrne wrote:

>On August 10, 2002 at 17:48:47, James T. Walker wrote:
>
>>On August 10, 2002 at 15:26:57, Mike Byrne wrote:
>>
>>>Position between Aristarch and Crafty SE 17.16.
>>>
>>>[D] 2b5/8/2kP1K2/Pp5p/1B5P/8/8/8 b - - 0 64 ; am
>>>
>>>This position has all the appearances of a dead drawn opposite color bishop
>>>ending - and I think it is - but I'm not a master - so I can't say for sure.
>>>
>>>I do know that 64....Kd7 that Aristarch played leads to an immediate loss.
>>>
>>>Crafty 17.16 SE fails with Kd7 in two seconds and switches to Bd7 - which may
>>>hold the draw - the win would be definately be harder for white after 64....
>>>Bd7.
>>
>>Both moves lose.  It's a matter of chose your poison.  You have to go back to an
>>earlier position to find what went wrong.  If Kd7 then white grabs the h pawn.
>>If Bd7 then advancing the a pawn causes black more problems than it can handle
>>Jim
>
>Please post the winning line after Bd7.  Thanks
>
>Mike

Its really easy...e.g.

64...Bd7 65.a6 Kb6 [65...Bh3(B...) 66.Ke7 Bg4(B...) 67.a7 Kb7 68.d7 Bxd7 69.Kxd7
Kxa7+-] 66.Ke7+-
-> the h-pawn wins always

Günther

http://home.t-online.de/home/g.simon.rgbg/





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