Author: Andreas Stabel
Date: 06:34:43 03/25/03
Go up one level in this thread
On March 25, 2003 at 09:27:12, Andreas Stabel wrote:
>On March 25, 2003 at 08:20:10, Joachim Rang wrote:
>
>>Alexander Kure posted a position from a game he played:
>>
>>[d]8/p3b3/1k6/4p2p/K1Pp2pP/3P2P1/3N4/8 b - - 0 1
>>
>>He played Bxh4 and gave the following winning line:
>>
>>1...Bxh4 2. gxh4 g3 3. Nf3 g2 4. Kb4 a5 5. Kb3 Kc5 6. Ng1 e4 7. dxe4 a4
>>and the 3 black passers are too much for white to handle.
>>
>>however 1...Bxh4 2. gxh4 g3 3. c5 is an intersting try.
>>
>>Kure wrote: 3. c5 Kc6 4. Kb4 g2 5. Nf3 Kc7! and white is in a kind of zugzwang
>>position, e.g. 6. Kc4 a5 7. Kb3 Kb7! is winning for black.
>>
>>but I doubt that. A possible continuation is
>>8.Nf3-g1 Kb7-c6 9.Kb3-c4 a5-a4 10.Kc4-b4 e5-e4 11.Kb4xa4 e4xd3 12.Ka4-b3 Kc6xc5
>>13.Kb3-b2 and draw...
>>
>>Vincent of course already proved it, that it is winning for black, but won't
>>probably tell us, since we poor guys can only look at a programs output and have
>>no understanding of chess :-( So I fear we have to prove it ourselve.
>>
>>What are xour opinions? Note: There are zugzwang motives, so don't simply look
>>on the evaluation, but play the lines further to see what happens.
>
>After 1... Bxh4 2. gxh4 g3 crafty has the following analysis: (4-man EGTBs)
>20-> 6:44 -2.56 3. c5+ Kb7 4. Kb4 g2 5. Nf3 a5+ 6.
> Kb3 Kc7 7. c6 Kd6 8. Kc4 a4 9. Kb5
> e4 10. dxe4 d3 11. e5+ Kc7 12. e6 d2
> 13. e7 d1=Q 14. e8=Q Qb3+ 15. Kc5 Qxf3
>
Update:
21 13:54 -2.59 3. c5+ Kb7 4. Nf3 g2 5. Ng1 Kc6 6.
Kb4 a5+ 7. Kxa5 e4 8. Kb4 exd3 9. Kb3
Kxc5 10. Kb2 Kc4 11. Kc1 Kc3 12. Nh3
d2+ 13. Kd1 Kb3 14. Kxd2 Kc4
21 15:40 -2.55 3. Nf3 g2 4. Kb4 Kb7 5. Kb3 Kc7 6.
Kb2 Kb8 7. Ng1 a5 8. Kb3 Kb7 9. Nf3
Kb6 10. Ng1 Kc5 11. Nh3 e4 12. dxe4
a4+ 13. Kxa4 Kxc4
21-> 15:45 -2.55 3. Nf3 g2 4. Kb4 Kb7 5. Kb3 Kc7 6.
Kb2 Kb8 7. Ng1 a5 8. Kb3 Kb7 9. Nf3
Kb6 10. Ng1 Kc5 11. Nh3 e4 12. dxe4
a4+ 13. Kxa4 Kxc4
>
>Regards
>Andreas
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