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Subject: Re: Is Kf3 really a winning move?

Author: Jeremiah Penery

Date: 07:23:38 10/13/99

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On October 13, 1999 at 05:15:18, Bernhard Bauer wrote:

>On October 12, 1999 at 20:56:46, Jeremiah Penery wrote:
>
>>On October 12, 1999 at 08:47:57, Bernhard Bauer wrote:
>>
>>>Hallo,
>>>
>>>       +---+---+---+---+---+---+---+---+
>>>    8  |   |   |   |   |   |   | *K|   |
>>>       +---+---+---+---+---+---+---+---+
>>>    7  |   | R |   |   |   |   |   |   |
>>>       +---+---+---+---+---+---+---+---+
>>>    6  |   |   |   |   |   |   | P | *P|
>>>       +---+---+---+---+---+---+---+---+
>>>    5  |   |   |   | *R| *B| *P|   | P |
>>>       +---+---+---+---+---+---+---+---+
>>>    4  |   | P |   |   |   | B |   |   |
>>>       +---+---+---+---+---+---+---+---+
>>>    3  |   |   |   |   |   |   | K |   |
>>>       +---+---+---+---+---+---+---+---+
>>>    2  |   |   |   |   |   |   |   |   |
>>>       +---+---+---+---+---+---+---+---+
>>>    1  |   |   |   |   |   |   |   |   |
>>>       +---+---+---+---+---+---+---+---+
>>>         a   b   c   d   e   f   g   h
>>>FEN: 6k/1R/6Pp/3rbp1P/1P3B/6K/8/8 w
>>>
>>>this is a position from Nisipeanu vs. Khalifman, Las Vegas, tie-break, game 2.
>>>
>>>Question: which program can solve this position?
>>>IMHO no program can do, but who knows, so I ask.
>>>G. Kasparov calls it a mutual Zugzvang position and in the variant he gives the
>>>white rook is hold in prison.
>>>The best move G. K. gives is Kf3 !!
>>
>>What about this line, given by my modified Crafty 16.18 after 440 minutes:
>>
>>15   440:54   0.00   1. Kf3 Rd3+ 2. Kg2 Bxf4 3. Rh7 Rd1
>>                     4. Kf2 Rd2+ 5. Kf3 Bd6 6. Re7 Be5 7.
>>                     Re8+ Kg7 8. Rd8 Rd3+ 9. Kg2 Rd2+ 10.
>>                     Kf3
>>
>>Is this really a draw, or can White improve?
>>
>>Jeremiah
>
>This line looks crazy. I suppose you havn't looked at this line allready.
>May be something in your modified version is broken.
>1. Kf3 Rd3+ 2. Kg2?? Bxf4 3. Rh7 Rd1 4. Kf2 Rd2+ 5. Kf3 Bd6 6. Re7??? Be5???
>7.Re8+ Kg7 8. Rd8??? Rd3+??? 9. Kg2??? Rd2+??? 10.Kf3???

Probably.

I should've looked at the line more carefully before posting it. :/  I'll look
at it more carefully a bit later, and find out what's really going on. :)

Jeremiah



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