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Subject: Re: The next test position from Fisher-Geller - probably even more difficult

Author: Slater Wold

Date: 15:30:51 09/16/01

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On September 16, 2001 at 15:55:14, Peter Berger wrote:

>The logical one following the discussion:
>
>How long does it take your program to find 1...Ng4! ? It's easy to verify that
>everything else besides 1...Nxe4 and 1...Ng4 loses . Nxe4 loses also ( read the
>initial post) - so Ng4 is the only move . It seems to lead to a rather equal
>position, too btw.
>
>Regards,
>
>pete
>
>[D] 3r1r1k/p3bPpp/2bp1n2/5R2/1q1BP3/1Bp5/PPP3PP/1K1R1Q2 b - - 0 1

Interesting position, for sure.

W,S - Deep Fritz T29c
3r1r1k/p3bPpp/2bp1n2/5R2/1q1BP3/1Bp5/PPP3PP/1K1R1Q2 b - - 0 1

Analysis by Deep Fritz T29c:

1...Qxb3!
  +-  (3.28)   Depth: 1/9   00:00:00
1...Qxb3!
  +-  (3.28)   Depth: 1/9   00:00:00
1...Qxb3!
  +-  (3.28)   Depth: 1/9   00:00:00
1...Qxb3! 2.axb3
  +-  (3.25)   Depth: 1/16   00:00:00
1...cxb2!
  +-  (1.94)   Depth: 1/16   00:00:00
1...cxb2!
  -+  (-2.22)   Depth: 1/16   00:00:00
1...cxb2--
  -+  (-1.81)   Depth: 2/9   00:00:00
1...cxb2-- 2.Rxf6 Bxf6
  µ  (-0.91)   Depth: 2/9   00:00:00
1...Nxe4!
  µ  (-1.06)   Depth: 2/9   00:00:00
1...Nxe4! 2.a3
  -+  (-2.25)   Depth: 2/12   00:00:00  1kN
1...Nxe4 2.a3 Qb7
  -+  (-2.09)   Depth: 3/10   00:00:00  2kN
1...Nxe4 2.a3 Qb7 3.bxc3
  -+  (-2.25)   Depth: 4/12   00:00:00  4kN
1...Nxe4 2.bxc3 Qb7 3.Qd3 Rb8
  -+  (-2.28)   Depth: 5/16   00:00:00  18kN
1...Nxe4 2.bxc3 Qb7 3.Qd3 Rb8 4.Ka1
  -+  (-2.09)   Depth: 6/14   00:00:00  31kN
1...Nxe4 2.bxc3 Qb7 3.Ka1 Rb8 4.Qd3 d5
  -+  (-2.19)   Depth: 7/20   00:00:00  162kN
1...Nxe4 2.bxc3 Nxc3+ 3.Bxc3 Qxc3 4.Qe1 Qxe1 5.Rxe1 Bf6 6.g3 Rb8
  -+  (-1.94)   Depth: 8/23   00:00:00  311kN
1...Nxe4 2.bxc3 Qb7 3.Qf4 d5 4.Qh6 Bf6 5.Rxf6 Nxf6 6.Bxf6
  -+  (-1.84)   Depth: 9/24   00:00:00  969kN
1...Nxe4 2.a3 Qb7 3.Qf4 Nd2+ 4.Ka2 Nxb3 5.cxb3 cxb2 6.Bxg7+ Kxg7 7.Qg4+
  -+  (-1.66)   Depth: 10/28   00:00:01  2939kN
1...Nxe4 2.bxc3 Nxc3+ 3.Bxc3 Qxc3 4.Qe1 Qxe1 5.Rxe1 Bf6 6.g4 Bd7 7.Rf4
  -+  (-1.94)   Depth: 11/35   00:00:08  12864kN
1...Nxe4 2.bxc3 Nxc3+ 3.Bxc3 Qxc3 4.Qe1 Bf6 5.Qxc3 Bxc3 6.g3 Be4 7.Rf4
  -+  (-2.09)   Depth: 12/33   00:00:20  30274kN
1...Nxe4--
  -+  (-1.78)   Depth: 13/36   00:00:57  87677kN
1...Nxe4-- 2.Qf4 Ba8 3.bxc3 Qb7 4.Kc1 d5 5.Qe5 Bf6 6.Rxf6 Nxf6
  ³  (-0.44)   Depth: 13/36   00:01:30  137014kN
1...Nxe4--
  =  (-0.13)   Depth: 14/36   00:03:41  345931kN
1...Nxe4-- 2.Qf4 cxb2 3.Rh5 Nf6 4.Rh6 Be4 5.Rxf6 d5 6.Re6 a6 7.Rxa6
  =  (0.12)   Depth: 14/36   00:04:24  411319kN
1...Nxe4 2.Qf4 cxb2 3.Rh5 Nf6 4.Rh6 Ne4 5.Rh5 Nf6 6.Rh6 Ne4 7.Rh5
  =  (0.00)   Depth: 15/38   00:09:16  869287kN
1...Nxe4 2.Qf4 cxb2 3.Rh5 Nf6 4.Rh6 Ne4 5.Rh5 Nf6 6.Rh6 Ne4 7.Rh5
  =  (0.00)   Depth: 16/39   00:17:02  1597208kN

(W,  16.08.2001)



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