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Subject: Re: Testposition - The Winning Arrow

Author: Dieter Buerssner

Date: 10:04:27 03/02/01

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On March 02, 2001 at 09:29:37, Sune Larsson wrote:

>  8/p1p2pp1/1pP3p1/3Pb2k/4P3/5P1P/8/3K2B1 w - - 0 2
>
>  From Queckenstadt 1914 (published in Sydsvenska Dagbladet /Swedish newspaper/)
[...]
>  Test: White to move and win -

Yace:

   8225373  44.412  -1.13 13t+ 1.Bf2 a5 2.Be1 g5 3.Ke2 g6 4.Kd3 a4 5.Kc4 Kh6
  11980130  1:05.4  -1.06 13t  1.Bf2 Bd6 2.Kc2 a5 3.Bd4 f6 4.Bf2 b5 5.Kd3 a4
                               6.Kd4 Be5+ {HT} {-80}
  15559016  1:23.4  -1.06 13.  1.Bf2 Bd6 2.Kc2 a5 3.Bd4 f6 4.Bf2 b5 5.Kd3 a4
                               6.Kd4 Be5+ {HT} {-80}
  23292883  2:06.0  -0.94 14t  1.Bf2 Bd6 2.Ke2 a6 3.Be1 a5 4.Kd3 a4 5.Bc3 f6
                               6.Kc4 a3 7.Kb3 {HT} {-80}
  35269731  3:08.5  -0.94 14.  1.Bf2 Bd6 2.Ke2 a6 3.Be1 a5 4.Kd3 a4 5.Bc3 f6
                               6.Kc4 a3 7.Kb3 {HT} {-80}
  55998150  5:02.5  -1.01 15t  1.Bf2 a5 2.f4 Bxf4 3.Bd4 f6 4.e5 fxe5 5.Bxb6 e4
                               6.Bxa5 Kh4 7.Bc3 Kxh3 8.Bxg7 Kg4 {-80}
  66109055  5:58.3  -1.00 15t+ 1.Be3 Bd6 2.f4 f6 3.Bd4 Bxf4 4.e5 fxe5 5.Be3
                               Bg3 6.Bf2H Bh2H {HT} {-240}
  88860755  8:01.8  -0.96 15t  1.Be3 g5 2.Bf2 a5 3.Be1 Bd6 4.Kc2 a4 5.Kc3 b5
                               6.e5 Bc5 7.e6 b4+ 8.Kc4 {-80}
 107363323  9:34.5  -0.95 15t+ 1.f4 Bxf4 2.Bd4 Kh4 3.e5 Bg5 4.e6 fxe6 5.dxe6
                               Bd8 6.Be5 Kh5
 112739380 10:03.7  -0.54 15++ 1.f4 Bxf4 2.Bd4 Kh4 3.e5 Bg5 4.e6 fxe6 5.Be5 a5
                               6.Bxc7 Kxh3 7.Bxb6 Kg4 8.c7 Be7
 123651499 10:59.8   0.00 15t  1.f4 Bxf4 2.Bd4 f6 3.e5 fxe5 4.Be3 Bg3 5.Bf2
                               Bf4 6.Be3 {-240}
 124011998 11:01.7   0.00 15.  1.f4 Bxf4 2.Bd4 f6 3.e5 fxe5 4.Be3 Bg3 5.Bf2
                               Bf4 6.Be3 {-240}
 140615372 12:26.3   0.00 16t  1.f4 Bxf4 2.Bd4 f6 3.e5 fxe5 4.Be3 Bg3 5.Bf2
                               Bf4 6.Be3 {-240}
 163838096 14:25.6   0.00 16.  1.f4 Bxf4 2.Bd4 f6 3.e5 fxe5 4.Be3 Bg3 5.Bf2
                               Bf4 6.Be3 {-240}
 205132316 18:00.8   0.40 17++ 1.f4 Bxf4 2.Bd4 f6 3.e5 fxe5 4.Be3 Bg3 5.Bg5 e4
                               6.Be7 a5 7.d6 Be1 8.Kxe1 a4
 244502639 21:25.6   0.51 17t  1.f4 Bxf4 2.Bd4 Bg5 3.Bxg7 Bd8 4.e5 a5 5.d6 a4
                               6.d7 a3 7.Kc2 a2 8.Kb2 Kh4 {HT} {-80}
 287327540 25:04.6   0.51 17.  1.f4 Bxf4 2.Bd4 Bg5 3.Bxg7 Bd8 4.e5 a5 5.d6 a4
                               6.d7 a3 7.Kc2 a2 8.Kb2 Kh4 {HT} {-80}

> could you do that under normal tournament
>        conditions (40/2)

If f4 is correct, perhaps on a fast computer.

-- Dieter



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