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Subject: Re: Very difficult position

Author: Ernst Walet

Date: 08:10:36 07/15/04

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On July 15, 2004 at 00:23:45, Jouni Uski wrote:

>[D]r6r/p2Rbk1p/2p2p2/q6b/8/2N2N1P/P1PP1PP1/2BQ2K1 w - - 0 1 bm Nd5
>
>I think this is by far the most difficult one in Richter's book Kombinationen!
>Shredder 8 takes 26 minutes with 2,4 Ghz PC.
>
>Jouni

Hiarcs9 finds it as well...
Ernst.

New game,
r6r/p2Rbk1p/2p2p2/q6b/8/2N2N1P/P1PP1PP1/2BQ2K1 w - - 0 1

Analysis by Hiarcs 9:

1.Qe2 Qc5
  ±  (1.29)   Depth: 1/11   00:00:00
1.Qe2 Qc5
  ±  (1.29)   Depth: 2/11   00:00:00
1.Qe2 Qc5
  +-  (1.54)   Depth: 3/11   00:00:00
1.Qe2 Rae8 2.Qc4+ Kg7
  +-  (1.60)   Depth: 3/13   00:00:00
1.Qe1 Rhe8 2.Nd4 Qe5 3.Qxe5
  +-  (1.42)   Depth: 4/15   00:00:00
1.Qe1 Rhe8 2.Nd4 Qe5 3.Qxe5
  +-  (1.42)   Depth: 4/15   00:00:00
1.Qe1 Rhe8 2.Nd4 Qe5 3.Qxe5
  +-  (1.42)   Depth: 4/15   00:00:00
1.Qe1 Rae8 2.Nd4 Qe5 3.Qxe5 fxe5
  +-  (1.64)   Depth: 5/16   00:00:00  7kN
1.Qe1 Rhe8 2.Nd4 Qe5 3.Qxe5 fxe5 4.Nxc6
  +-  (1.42)   Depth: 6/17   00:00:00  26kN
1.Qe2 Qb4
  +-  (1.44)   Depth: 6/18   00:00:00  33kN
1.Qe2 Qc5 2.d4 Bxf3 3.Qxf3 Qc4 4.Ba3 Rae8
  +-  (1.66)   Depth: 6/19   00:00:00  54kN
1.Qe2 Rhe8 2.Qc4+ Kf8 3.Nd4 Bf7 4.Qxc6 Rac8 5.Qe4
  +-  (1.43)   Depth: 7/22   00:00:00  140kN
1.Qe1 Rhe8 2.Nd4 Qe5 3.Qxe5 fxe5 4.Nxc6
  +-  (1.44)   Depth: 7/22   00:00:00  149kN
1.Qe1 Rhe8 2.Nd4 Qe5 3.Qxe5 fxe5 4.Nxc6 Ke6 5.Rxa7
  +-  (1.76)   Depth: 7/22   00:00:00  160kN
1.Qe1 Rhe8 2.Nd4 Qe5 3.Qxe5 fxe5 4.Nxc6 Ke6 5.Rxe7+ Rxe7
  +-  (1.77)   Depth: 8/26   00:00:01  283kN
1.Qe1 Rhe8 2.Nd4 Qe5 3.Qxe5 fxe5 4.Nxc6 Ke6 5.Rxe7+ Rxe7
  +-  (1.77)   Depth: 9/29   00:00:03  843kN
1.Qe1 Rhe8 2.Nd4 Qe5 3.Qxe5 fxe5 4.Nxc6 Ke6 5.Rxa7 Rxa7 6.Nxa7 Rg8 7.Nc6
  +-  (1.87)   Depth: 10/29   00:00:11  3054kN
1.Qe1 Rhe8 2.Nd4 Qe5 3.Qxe5 fxe5 4.Nxc6 Ke6 5.Rd5 Bf6 6.f4 Rac8 7.Nxe5
  +-  (1.80)   Depth: 11/33   00:00:24  7176kN
1.Qe2 Rhe8
  +-  (1.80)   Depth: 11/33   00:00:41  11980kN
1.Qe2 Rhe8 2.Ne4 Kf8 3.Qe3 Bxf3 4.Qxf3 f5 5.Qh5 Qxa2 6.Qh6+ Kg8
  +-  (1.92)   Depth: 11/33   00:00:45  12999kN
1.Qe2 Rhe8 2.Ne4 Kf8 3.Qe3 Bxf3 4.Qh6+ Kg8 5.Nxf6+ Kf7 6.Nxe8 Kxe8 7.Rxe7+ Kxe7
8.Qxh7+ Kd6 9.Qh6+ Kc7 10.Qf4+ Kb6
  +-  (2.16)   Depth: 12/37   00:03:48  64904kN
1.Qe2 Rhe8 2.Ne4 Kf8 3.Qe3 Bxf3 4.Qh6+ Kg8 5.Nxf6+ Kf7 6.Nxe8 Kxe8 7.Rxe7+ Kxe7
8.Qxh7+ Kd6 9.Qh6+ Kc7 10.Qf4+ Kb6 11.Qe3+ Kb7
  +-  (2.21)   Depth: 13/38   00:06:55  119721kN
1.Qe2 Rhe8 2.Ne4 Kf8 3.Qe3 Bxf3 4.Qh6+ Kg8 5.Nxf6+ Kf7 6.Nxe8 Kxe8 7.Rxe7+ Kxe7
8.Qxh7+ Kd6 9.Qh6+ Kc7 10.Qf4+ Kb6 11.Qe3+ Kb7 12.Qb3+ Kc7
  +-  (2.21)   Depth: 14/41   00:18:10  320929kN
1.Nd5 cxd5
  +-  (2.22)   Depth: 14/43   00:43:49  784962kN
1.Nd5 cxd5 2.Ne5+ fxe5 3.Qxh5+ Ke6 4.Qg4+ Kf7 5.Qf5+ Ke8 6.Qe6 Qb4 7.c3 Qc5 8.d4
exd4
  +-  (2.38)   Depth: 14/44   00:51:43  921302kN

(AthlonXP @ 2200MHz, 512MB hash, 15.07.2004)



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