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Subject: Re: Is Kf3 really a winning move?

Author: Bernhard Bauer

Date: 02:15:18 10/13/99

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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???

Kind regards
Bernhard



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