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Subject: Re: Mate in 16

Author: Uri Blass

Date: 10:05:07 01/07/02

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On January 07, 2002 at 12:36:27, Dann Corbit wrote:

>On January 07, 2002 at 11:33:04, José Antônio Fabiano Mendes wrote:
>
>>       Mate in 16
>>       [D]7k/5Pp1/6P1/8/8/RPr4K/2PPPPP1/8 w
>>        Source: http://www.chez.com/pcanteau/mate16m.htm
>
>Here is the Pepito output:
>21  9965  4567 24921204  d3 Rc3xd3 f3 Rd3xf3 Kh3-h2 Rf3-h3 Kh2-g1 Rh3-h1 Kg1-f2
>Rh1-f1 Kf2-e3 Rf1-f3 Ke3-d2 Rf3-d3 Kd2-c1 Rd3-d8 b4 Rd8-d1 Kc1-b2 Rd1-b1 Kb2-c3
>Rb1-b3 Kc3-d2 Rb3-d3 Kd2-e1 Rd3-d1 Ke1-f2 Rd1-f1 Kf2-g3 Rf1-f3 Kg3-h2 Rf3xf7
>Ra3-a8 Rf7-f8 Ra8xf8
>
>Pepito finds M18

Little goliath with only small part of the tablebases
is blind  thanks to known reasons and can see only a draw

New position
7k/5Pp1/6P1/8/8/RPr4K/2PPPPP1/8 w - - 0 1

Analysis by Goliath Light 1.5:

1.Kg4 Rc8 2.c4
  +-  (13.26)   Depth: 6/10   00:00:00
1.Kg4 Rc8 2.c4 Rf8
  +-  (13.50)   Depth: 6/10   00:00:00  4kN
1.Kg4 Rc8 2.c4 Rf8
  +-  (13.50)   Depth: 7/10   00:00:00  6kN
1.Kg4 Rc8 2.c4 Rf8
  +-  (13.83)   Depth: 7/13   00:00:00  11kN
1.Kg4 Rc8 2.Kf5 Rf8 3.Ke6
  +-  (14.58)   Depth: 7/13   00:00:00  12kN
1.Kg4 Rc8 2.Kf5 Rf8 3.Ke6
  +-  (14.58)   Depth: 8/13   00:00:00  16kN
1.Kg4 Rc8 2.Kf5 Rf8 3.Ke6
  +-  (14.08)   Depth: 8/13   00:00:00  17kN
1.Kg4 Rc8 2.Kf5 Rd8 3.c4 Rf8
  +-  (13.79)   Depth: 8/14   00:00:00  25kN
1.Kg4 Rc8 2.Kf5 Rd8 3.c4 Rf8
  +-  (13.79)   Depth: 9/14   00:00:00  31kN
1.Kg4 Rc8 2.Kf5 Rd8 3.c4 Rf8
  +-  (14.14)   Depth: 9/16   00:00:00  44kN
1.Kg4 Rc8 2.Kf5 Rd8 3.c4 Rf8
  +-  (14.94)   Depth: 9/18   00:00:00  97kN
1.Kg4 Rc4+ 2.f4 Rxf4+ 3.Kg3 Rg4+ 4.Kf2 Rxg2+ 5.Kf3 Rf2+ 6.Kg3 Rxf7 7.gxf7
  +-  (16.55)   Depth: 9/21   00:00:00  277kN
1.f3
  +-  (16.94)   Depth: 9/21   00:00:00  282kN
1.f3 Rxf3+ 2.Kh2
  +-  (18.43)   Depth: 9/21   00:00:00  309kN
1.f3 Rxf3+ 2.Kh2
  +-  (18.43)   Depth: 10/21   00:00:00  311kN
1.f3 Rxf3+ 2.Kh2
  +-  (17.21)   Depth: 10/21   00:00:00  313kN
1.f3 Rxf3+ 2.Kh2 Rh3+ 3.Kg1 Rh1+ 4.Kf2 Rf1+ 5.Ke3 Rf3+ 6.gxf3
  =  (0.00)   Depth: 10/21   00:00:00  339kN
1.Kg4
  +-  (9.69)   Depth: 10/21   00:00:00  350kN
1.Kg4 Rc4+ 2.Kf5
  +-  (10.72)   Depth: 10/25   00:00:00  709kN
1.Kg4 Rc4+ 2.Kf5
  +-  (10.72)   Depth: 11/25   00:00:00  721kN
1.Kg4 Rc4+ 2.Kf5
  +-  (10.28)   Depth: 11/25   00:00:00  721kN
1.Kg4 Rc4+ 2.Kf5 Rf4+ 3.Ke5 Re4+ 4.Kd6 Rd4+ 5.Ke7 Re4+ 6.Kf8 Re8+ 7.Kxe8
  =  (0.00)   Depth: 11/25   00:00:00  742kN
1.Kg4 Rc4+ 2.Kf5 Rf4+ 3.Ke5 Re4+ 4.Kd6 Rd4+ 5.Ke7 Re4+ 6.Kf8 Re8+ 7.Kxe8
  =  (0.00)   Depth: 12/25   00:00:00  766kN
1.Kg4 Rc4+ 2.Kf5 Rf4+ 3.Ke5 Re4+ 4.Kd6 Rd4+ 5.Ke7 Re4+ 6.Kf8 Re8+ 7.Kxe8
  =  (0.00)   Depth: 12/25   00:00:00  824kN
1.Kg4 Rc4+ 2.Kf5 Rf4+ 3.Ke5 Re4+ 4.Kd6 Rd4+ 5.Ke7 Re4+ 6.Kf8 Re8+ 7.Kxe8
  =  (0.00)   Depth: 13/25   00:00:00  864kN
1.Kg4 Rc4+ 2.Kf5 Rf4+ 3.Ke5 Re4+ 4.Kd6 Rd4+ 5.Ke7 Re4+ 6.Kf8 Re8+ 7.Kxe8
  =  (0.00)   Depth: 13/25   00:00:01  957kN
1.Kg4 Rc4+ 2.Kf5 Rf4+ 3.Ke5 Re4+ 4.Kd6 Rd4+ 5.Ke7 Re4+ 6.Kf8 Re8+ 7.Kxe8
  =  (0.00)   Depth: 14/25   00:00:01  986kN
1.Kg4 Rc4+ 2.Kf5 Rf4+ 3.Ke5 Re4+ 4.Kd6 Rd4+ 5.Ke7 Re4+ 6.Kf8 Re8+ 7.Kxe8
  =  (0.00)   Depth: 14/25   00:00:01  1151kN
1.Kg4 Rc4+ 2.Kf5 Rf4+ 3.Ke5 Re4+ 4.Kd6 Rd4+ 5.Ke7 Re4+ 6.Kf8 Re8+ 7.Kxe8
  =  (0.00)   Depth: 15/25   00:00:01  1214kN
1.Kg4 Rc4+ 2.Kf5 Rf4+ 3.Ke5 Re4+ 4.Kd6 Rd4+ 5.Ke7 Re4+ 6.Kf8 Re8+ 7.Kxe8
  =  (0.00)   Depth: 15/25   00:00:01  1446kN
1.Kg4 Rc4+ 2.Kf5 Rf4+ 3.Ke5 Re4+ 4.Kd6 Rd4+ 5.Ke7 Re4+ 6.Kf8 Re8+ 7.Kxe8
  =  (0.00)   Depth: 16/25   00:00:01  1501kN
1.Kg4 Rc4+ 2.Kf5 Rf4+ 3.Ke5 Re4+ 4.Kd6 Rd4+ 5.Ke7 Re4+ 6.Kf8 Re8+ 7.Kxe8
  =  (0.00)   Depth: 16/26   00:00:01  1868kN
1.Kg4 Rc4+ 2.Kf5 Rf4+ 3.Ke5 Re4+ 4.Kd6 Rd4+ 5.Ke7 Re4+ 6.Kf8 Re8+ 7.Kxe8
  =  (0.00)   Depth: 17/26   00:00:01  1971kN
1.Kg4 Rc4+ 2.Kf5 Rf4+ 3.Ke5 Re4+ 4.Kd6 Rd4+ 5.Ke7 Re4+ 6.Kf8 Re8+ 7.Kxe8
  =  (0.00)   Depth: 17/26   00:00:02  2776kN
1.Kg4 Rc4+ 2.Kf5 Rf4+ 3.Ke5 Re4+ 4.Kd6 Rd4+ 5.Ke7 Re4+ 6.Kf8 Re8+ 7.Kxe8
  =  (0.00)   Depth: 18/26   00:00:02  2955kN
1.Kg4 Rc4+ 2.Kf5 Rf4+ 3.Ke5 Re4+ 4.Kd6 Rd4+ 5.Ke7 Re4+ 6.Kf8 Re8+ 7.Kxe8
  =  (0.00)   Depth: 18/28   00:00:03  4061kN
1.Kg4 Rc4+ 2.Kf5 Rf4+ 3.Ke5 Re4+ 4.Kd6 Rd4+ 5.Ke7 Re4+ 6.Kf8 Re8+ 7.Kxe8
  =  (0.00)   Depth: 19/28   00:00:03  4366kN
1.Kg4 Rc4+ 2.Kf5 Rf4+ 3.Ke5 Re4+ 4.Kd6 Rd4+ 5.Ke7 Re4+ 6.Kf8 Re8+ 7.Kxe8
  =  (0.00)   Depth: 19/30   00:00:04  5726kN
1.Kg4 Rc4+ 2.Kf5 Rf4+ 3.Ke5 Re4+ 4.Kd6 Rd4+ 5.Ke7 Re4+ 6.Kf8 Re8+ 7.Kxe8
  =  (0.00)   Depth: 20/30   00:00:05  6446kN
1.Kg4 Rc4+ 2.Kf5 Rf4+ 3.Ke5 Re4+ 4.Kd6 Rd4+ 5.Ke7 Re4+ 6.Kf8 Re8+ 7.Kxe8
  =  (0.00)   Depth: 20/32   00:00:07  9523kN, tb=4
1.Kg4 Rc4+ 2.Kf5 Rf4+ 3.Ke5 Re4+ 4.Kd6 Rd4+ 5.Ke7 Re4+ 6.Kf8 Re8+ 7.Kxe8
  =  (0.00)   Depth: 21/32   00:00:09  10928kN, tb=4
1.Kg4 Rc4+ 2.Kf5 Rf4+ 3.Ke5 Re4+ 4.Kd6 Rd4+ 5.Ke7 Re4+ 6.Kf8 Re8+ 7.Kxe8
  =  (0.00)   Depth: 21/33   00:00:15  17250kN, tb=9
1.Kg4 Rc4+ 2.Kf5 Rf4+ 3.Ke5 Re4+ 4.Kd6 Rd4+ 5.Ke7 Re4+ 6.Kf8 Re8+ 7.Kxe8
  =  (0.00)   Depth: 22/33   00:00:19  21222kN, tb=12
1.Kg4 Rc4+ 2.Kf5 Rf4+ 3.Ke5 Re4+ 4.Kd6 Rd4+ 5.Ke7 Re4+ 6.Kf8 Re8+ 7.Kxe8
  =  (0.00)   Depth: 22/37   00:00:40  41769kN, tb=189
1.Kg4 Rc4+ 2.Kf5 Rf4+ 3.Ke5 Re4+ 4.Kd6 Rd4+ 5.Ke7 Re4+ 6.Kf8 Re8+ 7.Kxe8
  =  (0.00)   Depth: 23/37   00:00:51  51148kN, tb=209
1.Kg4 Rc4+ 2.Kf5 Rf4+ 3.Ke5 Re4+ 4.Kd6 Rd4+ 5.Ke7 Re4+ 6.Kf8 Re8+ 7.Kxe8
  =  (0.00)   Depth: 23/37   00:01:44  104058kN, tb=829
1.Kg4 Rc4+ 2.Kf5 Rf4+ 3.Ke5 Re4+ 4.Kd6 Rd4+ 5.Ke7 Re4+ 6.Kf8 Re8+ 7.Kxe8
  =  (0.00)   Depth: 24/37   00:02:44  157488kN, tb=937
1.Kg4 Rc4+ 2.Kf5 Rf4+ 3.Ke5 Re4+ 4.Kd6 Rd4+ 5.Ke7 Re4+ 6.Kf8 Re8+ 7.Kxe8
  =  (0.00)   Depth: 24/38   00:05:32  345117kN, tb=2490

(Blass, Tel-aviv 07.01.2002)

Uri



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