Author: Andrew Williams
Date: 12:13:34 02/10/02
Go up one level in this thread
On February 10, 2002 at 14:50:47, Dieter Buerssner wrote:
>On February 09, 2002 at 19:06:18, Ed Schröder wrote:
>
>>I have a list left of 5 difficult postions for Rebel, of which I think these
>>should be solved much faster.
>>
>>k2N2K1/8/8/8/5R2/3n4/3p4/8 w - - bm Rf7 (Troitzky);
>
>As Uri pointed out, TBs can help here. Uri pointed out KQNKR, a TB I do not
>have, so I cannot check.
>
>Yace, without TBs on K6-2 475, 20 Mb hash:
>
> 15478460 1:59.9 -4.38 12t 1. Rf1 Ne1 2. Ne6 d1=Q 3. Rf7 Qg4+ 4. Ng7 Nd3
> 5. Re7 Kb8 6. Kf8 Qf3+ 7. Ke8 Qf6 {-501}
> 18987519 2:30.3 -4.37 12t+ 1. Rf7 d1=Q 2. Nc6 Qg4+ 3. Kf8 Qc8+ 4. Kg7 Ne5
> 5. Nxe5 Qd8
> 19382351 2:32.8 -3.95 12++ 1. Rf7 d1=Q 2. Nc6 Qg4+ 3. Kf8 Qc8+ 4. Kg7 Ne5
> 5. Nxe5 Qd8
> 19507844 2:33.7 -2.95 12++ 1. Rf7 d1=Q 2. Nc6 Qg4+ 3. Kf8 Qc8+ 4. Kg7 Ne5
> 5. Nxe5 Qd8
> 19732919 2:35.3 0.00 12t 1. Rf7 d1=Q 2. Nc6 Qg4+ 3. Kf8 Qc8+ 4. Kg7 Qxc6
> 5. Rf8+ Ka7 6. Rf7+ Kb8 7. Rf8+ Kc7 8. Rf7+ Kd8
> 9. Rf8+ Kd7 10. Rf7+ Kc8 11. Rf8+ Kc7 {-841}
> 23703530 3:00.3 0.00 12. 1. Rf7 d1=Q 2. Nc6 Qg4+ 3. Kf8 Qc8+ 4. Kg7 Qxc6
> 5. Rf8+ Ka7 6. Rf7+ Kb8 7. Rf8+ Kc7 8. Rf7+ Kd8
> 9. Rf8+ Kd7 10. Rf7+ Kc8 11. Rf8+ Kc7 {-841}
> 24130171 3:03.1 0.00 13t 1. Rf7 d1=Q 2. Nc6 Qg4+ 3. Kf8 Qc8+ 4. Kg7 Qxc6
> 5. Rf8+ Ka7 6. Rf7+ Kb8 7. Rf8+ Kc7 8. Rf7+ Kd8
> 9. Rf8+ Kd7 10. Rf7+ Kc8 11. Rf8+ Kc7H 12.
> Rf7+H Kd8H 13. Rf8+H Kd7H 14. Rf7+H Kc8H 15.
> Rf8+H Kc7HR {-841}
>
>
>>2n5/8/Pp5n/5N2/8/5k2/3P4/7K w - - bm d4 (Troitzky);
>
>As was pointed out already, there is something wrong here. After d4, Yace can
>prove, that black will mate. Can you correct this position?
>
>>1k4r1/3r1p1q/1p2pQpP/pPp1P1B1/P1Pp2P1/3P1R2/2n1KR2/8 w - - bm Qxf7;
>
>Perhaps, Kd2 and Qxf7 in the second move is also enough to win
>
>>8/7p/p2p4/P7/1p2k1P1/1P2p2r/2P1R1KP/8 b - - bm Rxh2+;
>
>In fast tests I have done (tried few lines), Rf3 was also winning. What do
>others think of Rf3?
>
My program liked Rf3, with a score of +3.6 I didn't look at it closely to see
if it actually was winning.
Andrew
>>2rr2k1/1pqbbppp/p3p3/4p3/2P5/2N1P1P1/PP2QPBP/2RR2K1 w - - bm c5; id Anand;
>
>Can anybody show a line?
>
>>I am looking forward to the analysis of other engines.
>
>Uri showed some analysis of Yace. Not surprisingly, I get similar results with
>my newest version.
>
>Regards,
>Dieter
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