Author: Dieter Buerssner
Date: 09:36:55 09/28/01
Go up one level in this thread
On September 28, 2001 at 10:32:25, Simon Finn wrote:
>On September 28, 2001 at 10:00:06, Dieter Buerssner wrote:
>
>>On September 28, 2001 at 09:20:12, José Antônio Fabiano Mendes wrote:
>>
>>> [D]8/8/6K1/k2p4/2p5/2P4p/3P3P/8 w
>>> F. Dedrle,1928 1.Kf7! and wins
>>
>>Can you, or anybody else show how this works?
>Good question - according to Minev in ECE (position 421) it's a draw!
>
>The critical line is
>
>1. Kf7 Kb6 2. Kf6 Kb5 3. Ke7 Kc6 4. Ke6 Kc5 5. Kd7 d4
>6. Ke6 dxc3 7. dxc3 Kc6 8. Ke5 Kc5 9. Ke4 Kd6 10. Kd4 Ke6
>11. Kxc4 Ke5 12. Kd3
For all moves in this line, I get draw score with Yace. Now we are already
inside TBs, so the position is certainly draw here.
>Now Dedrle gave the line
>
>12...Kf4 13. Ke2 Ke4 14. Kf2 +-
After 12...Kf4 I get:
360 7.458 Mat22 60t 13.Ke2 {EGTB} 13...Ke4! 14.Kf2! Kf4! 15.c4! Kg4
16.Ke3! Kf5! 17.Kd4! Ke6! 18.Kc5! Ke5! 19.Kb5
Ke6 20.c5 Kd7! 21.Kb6! Kc8! 22.Kc6! Kd8!
23.Kb7! Ke8 24.c6! Ke7 25.c7! Kf6! {Not all
>But Minev improves with
>
>12... Kd5 13. Ke3 Kc4 14. Kf3 Kxc3 15. Kg3 Kd4 16. Kxh3 Ke5 =
>
>Is Minev right?
After Kd5 I get draw score.
I think, often in this type of positions (only few pawns), chess programs are
usually very good. There are only few pawn moves possible, and programs reach a
high search depth fast, and of course, because of the TBs. Without TBs I get:
8869783 56.964 1.55 22t 1.Kf7 Kb6 2.Kf6 Kb5 3.Ke7 Kc6 4.Ke6 Kc5 5.Kd7
d4 6.Ke6 dxc3 7.dxc3 Kc6 8.Ke5 Kc5 9.Ke4 Kc6
10.Kd4H Kd7H 11.Kxc4H Ke6H 12.Kd4H Kf5H 13.c4H
Kf6H 14.Kd5H Kf5H 15.c5H Kf6H 16.c6H Ke7H
17.Kc5H Kd8H 18.Kc4H {HT} {80}
which is for the part, that is not from the hash, identical to the line above.
Regards,
Dieter
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