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Subject: Re: Question about this mate in 15

Author: M Hurd

Date: 03:34:23 02/26/06

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On February 25, 2006 at 18:34:30, Milton Zucker wrote:

>This position was posted several days ago by Mike Byrne.  On my P4 3.4 ghz
>notebook computer, Rybka 1.01 Beta 13d 32 bit solves it in 0:43 sec. in the
>Shredder Classic gui and 1:33 sec. in the Fritz 8 GUI using same size hash and
>default engine settings.
>
>Should this be happening; and if not, what can I do to speed up the program in
>the Fritz gui?  This is a concern because I would obviously like to use Rybka in
>the fastest gui; but Rybka's new book will only work in the Chess Base gui.
>
>Milton
>
>[d]1r4r1/3q1npk/2b1pbnp/Rp1p4/1N1P3P/2PQ1pP1/1K3B2/5B1R w - - 0 1


Hi Milton

This is the result on my pc athlon 2400 xp with 256 mb hash.

Shredder Classic gui :

1r4r1/3q1npk/2b1pbnp/Rp1p4/1N1P3P/2PQ1pP1/1K3B2/5B1R w - -

Engine: Rybka 1.01 Beta 13d 32-bit (256 MB)
by Vasik Rajlich

7.00   0:00   -1.19    1.h5 Ng5 2.hxg6+ Kh8 3.Ra6 Rgc8 (23.888) 33

8.00   0:01   -1.23    1.h5 Ng5 2.hxg6+ Kh8 3.Ra6 Rgc8
                       4.Qe3 (54.672) 35

9.00   0:04   -1.38    1.h5 Ng5 2.hxg6+ Kh8 3.Ra6 Rgc8
                       4.Qe3 Bb7 (151.288) 36

10.00  0:09   -1.51    1.h5 Ng5 2.hxg6+ Kh8 3.Ra6 Rgc8
                       4.Qe3 Bb7 5.Ra5 (367.184) 37

11.01  0:20   -1.22    1.h5 Ng5 2.hxg6+ Kh8 3.Be3 Ra8
                       4.Rxa8 Rxa8 5.Bxg5 Bxg5 6.Qxf3 Qc8 (776.608) 38

12.01  0:39   -1.37    1.h5 Ng5 2.hxg6+ Kh8 3.Be3 Ra8
                       4.Rxa8 Rxa8 5.Bxg5 Bxg5 6.Qxf3 Qa7
                       7.Bd3 (1.513.864) 38

12.04  0:50   +M15     1.Qxg6+ Kxg6 2.Bd3+ Kh5 3.g4+ Kxg4
                       4.Rg1+ Kh3 5.Bf1+ Kh2 6.Bg3+ Kxg1
                       7.Ra1 Ra8 (1.847.656) 37

Chessbase gui :

New game - Rybka 1.01 Beta 13d 32-bit, 40'/40+40'/40+40'
1r4r1/3q1npk/2b1pbnp/Rp1p4/1N1P3P/2PQ1pP1/1K3B2/5B1R w - - 0 1

Analysis by Rybka 1.01 Beta 13d 32-bit:

1.h5
  µ  (-0.86)   Depth: 3   00:00:00
1.h5
  µ  (-0.86)   Depth: 4   00:00:00
1.h5 Ng5
  µ  (-0.84)   Depth: 5   00:00:00
1.h5 Ng5 2.hxg6+ Kh8 3.Qe3
  µ  (-1.04)   Depth: 6   00:00:00  9kN
1.h5 Ng5 2.hxg6+ Kh8 3.Ra6 Rgc8
  µ  (-1.19)   Depth: 7   00:00:00  24kN
1.h5 Ng5 2.hxg6+ Kh8 3.Ra6 Rgc8 4.Qe3
  µ  (-1.23)   Depth: 8   00:00:01  55kN
1.h5 Ng5 2.hxg6+ Kh8 3.Ra6 Rgc8 4.Qe3 Bb7
  µ  (-1.38)   Depth: 9   00:00:04  151kN
1.h5 Ng5 2.hxg6+ Kh8 3.Ra6 Rgc8 4.Qe3 Bb7 5.Ra5
  -+  (-1.51)   Depth: 10   00:00:09  367kN
1.h5 Ng5 2.hxg6+ Kh8 3.Be3 Ra8 4.Rxa8 Rxa8 5.Bxg5 Bxg5 6.Qxf3 Qc8
  µ  (-1.22)   Depth: 11   00:00:20  777kN
1.h5 Ng5 2.hxg6+ Kh8 3.Be3 Ra8 4.Rxa8 Rxa8 5.Bxg5 Bxg5 6.Qxf3 Qa7 7.Bd3
  µ  (-1.37)   Depth: 12   00:00:40  1514kN
1.Qxg6+ Kxg6 2.Bd3+ Kh5 3.g4+ Kxg4 4.Rg1+ Kh3 5.Bf1+ Kh2 6.Bg3+ Kxg1 7.Ra1 Ra8
  +-  (#15)   Depth: 12   00:00:50  1848kN

Both exactly 50 seconds.

Regards

Mike



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