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Subject: Re: 5 difficult positions?

Author: Rory Nolan

Date: 16:44:37 02/09/02

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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.
>
>[d]k2N2K1/8/8/8/5R2/3n4/3p4/8 w - - bm Rf7 (Troitzky);
>
>RC4: not found after 5:00 (zugzwang?)
>
>
>[d]2n5/8/Pp5n/5N2/8/5k2/3P4/7K w - - bm d4 (Troitzky);
>
>RC4: not found after 5:00 (zugzwang?)
>
>
>[d]1k4r1/3r1p1q/1p2pQpP/pPp1P1B1/P1Pp2P1/3P1R2/2n1KR2/8 w - - bm Qxf7;
>
>RC4: not found after 5:00
>
>
>[d]8/7p/p2p4/P7/1p2k1P1/1P2p2r/2P1R1KP/8 b - - bm Rxh2+;
>
>RC4: not found after 5:00
>
>
>[d]2rr2k1/1pqbbppp/p3p3/4p3/2P5/2N1P1P1/PP2QPBP/2RR2K1 w - - bm c5; id Anand;
>
>RC4:  02:17
>
>
>Version: Rebel Century 4 (WB), Athlon 1400, 60 Mb hash.
>
>I am looking forward to the analysis of other engines.
>
>Ed

here's what Fritz7 had to say on the 1st position

New game
k2N2K1/8/8/8/5R2/3n4/3p4/8 w - - 0 1

Analysis by Fritz 7:

1. = (0.00): 1.Rf7 d1Q 2.Nc6 Qg4+ 3.Kf8 Qc8+ 4.Kg7 Qxc6 5.Rf8+ Ka7 6.Rf7+ Kb8
7.Rf8+ Kc7 8.Rf7+
2. -+ (-4.71): 1.Rf1 Ne1 2.Ne6 d1Q 3.Kf7 Qh5+ 4.Ke7 Nd3 5.Rf7 Ne5 6.Rf8+ Kb7
7.Kd6 Nc4+ 8.Ke7
3. -+ (-4.81): 1.Ra4+ Kb8 2.Ra1 Nc1 3.Nc6+ Kc7 4.Ne5 d1Q 5.Ra7+ Kb6 6.Rd7 Qe1
7.Re7 Qg3+ 8.Kf8
4. -+ (-5.00): 1.Rf5 d1Q 2.Kf7 Nb4 3.Ne6 Nc6 4.Rf6 Qg4 5.Ng7 Ne5+ 6.Kg8

(Nolan, Sutton 10.02.2002)

xp1900+, 11mins thinking time 192mb hash



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