Author: Roy Eassa
Date: 11:16:48 10/12/01
Go up one level in this thread
On October 12, 2001 at 00:24:03, Miguel A. Ballicora wrote:
>On October 11, 2001 at 23:50:37, Slater Wold wrote:
>
>>I will be burning in the new system tonite, and giving 1 position about 18 hours
>>of thinking time.
>>
>>Anyone have a request on the position?
>>
>>I will be checking back here in about 30 minutes, and if anyone has responded, I
>>will analyze that position.
>>
>>If not, I will just use Nolot #9 or something.
>>
>>First come first serve, and please make it a good one. :)
>>
>>
>>Thanks!
>
>I posted this already and was not solved. I wonder how long it will take
>too avoid horizon problems. The Q in b8 should end up in the h column
>mating the king after sacrificing everything Bb4 Rh8+ Rh1+ Rh8+ Rh1+ qh8+
>Qh3.
>
>[D]2rr1b2/8/ppkq1pP1/3pp3/2p5/2BPPpP1/BQ3P2/1RRN1n1K b - - bm Qb8; id "WCSAC.0580";
I'm not convinced Black can win.
Here's some analysis with the help of Fritz 6 (AMD 1.2):
1...Qb8 2.Kg1! Nh2
[2...Ba3? 3.Qxa3! Rh8 4.Qe7! Rh1+ 5.Kxh1 Rh8+ 6.Kg1;
2...Bb4 3.Kxf1!
(3.Bxb4?? Rh8 4.g7
(4.Rxc4+ dxc4 5.Bf8!
(5.g7?? Rh1+ 6.Kxh1 Rh8+)
5...Rcxf8 6.g7 Rfg8!
(6...Rh1+? 7.Kxh1 Rh8+ 8.Kg1)
7.Qxb6+ Qxb6 8.Rxb6+ Kxb6 9.gxh8Q Rxh8 10.Bxc4 Nd2-+;
4...Rh1+ 5.Kxh1 Rh8+ 6.Kg1 Qc8 7.gxh8Q Qxh8;
3...Rh8 4.Ke1]
3.dxc4!
[3.Kxh2? Bc5!
(3...Bb4? 4.Qxb4 Rh8+ 5.Kg1 Rh1+ 6.Kxh1 Rh8+ 7.Kg1 Rh1+ 8.Kxh1 Qh8+ 9.Kg1
b5 10.Qa3+-;
3...Ba3? 4.Qxa3 Rh8+ 5.Kg1 Rh1+ 6.Kxh1 Rh8+ 7.Kg1 Rh1+ 8.Kxh1 Qh8+ 9.Kg1
Qh3 10.Rxb6+ Kxb6 11.Rb1+ Kc6 12.Qxa6+ Kd7 13.Rb7+ Kd8 14.Qd6+ Ke8 15.Qe7#)
4.dxc4 Rh8+ 5.Kg1 Rh1+ 6.Kxh1 Rh8+ 7.Kg1 Rh1+ 8.Kxh1 Qh8+ 9.Kg1 Qh3-+]
3...Bc5
[3...Ng4 4.cxd5+ Kd7 5.Qxb6]
4.cxd5+ Kd7 5.Qc2
The problem seems to be that ...Nh2 gets in the way of Black's attack, and other
moves allow White to launch a counter-attack or get his Queen to e7, from which
it can block on h7 (supported by a Pawn on g7).
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