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Subject: Re: Positional testposition

Author: Omid David Tabibi

Date: 12:56:43 12/12/02

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On December 12, 2002 at 15:07:47, John Merlino wrote:

>On December 12, 2002 at 14:01:55, Gian-Carlo Pascutto wrote:
>
>>[D]rnbq1k1r/1p1nb3/p2pp2p/6PQ/4P2B/2N5/PPP3PP/R3KB1R w KQ - 0 13
>>
>>From Tim Krabbe's site: Bb5!
>>
>>--
>>GCP
>
>Chessmaster 9000, on a P3-733, finds it in 1 second, loses it at 25 seconds, and
>gets it back at 2:19. It still gives Black about a half-pawn advantage. Of
>course, on a top-end computer, another depth or two could give quite different
>results in this double-edged position....
>
>Time	Depth	Score	Positions	Moves
>0:00	1/3	-0.31	4268		13.Bxa6 Ne5 14.O-O+ Kg8
>0:00	1/4	-0.63	9097		13.Bxa6 Ne5 14.O-O+ Kg8 15.Bb5
>					Bxg5 16.Bxg5 Qxg5
>0:00	1/5	-0.34	35390		13.Bxa6 Ne5 14.Bg3 Nbc6 15.O-O+ Kg8
>0:01	1/6	-0.71	67135		13.Bxa6 Ne5 14.Bb5 Nbc6 15.O-O+
>					Kg8 16.Rae1 Bxg5 17.Bxg5 Qxg5
>0:01	1/6	-0.60	87497		13.Bb5 Ne5 14.Bg3 Bxg5 15.O-O+
>					Ke7 16.Bxe5 Qb6+ 17.Kh1 dxe5
>0:03	1/7	-0.60	208575		13.Bb5 Ne5 14.Bg3 Bxg5 15.O-O+
>					Ke7 16.Bxe5 Qb6+ 17.Kh1 dxe5
>0:11	1/8	-1.22	904118		13.Bb5 Kg7 14.O-O Ne5 15.Bg3 Ng6
>					16.Qf3 hxg5 17.Bc4 Qb6+ 18.Kh1 Qxb2
>0:25	1/8	-1.19	2074905		13.Qf3+ Kg8 14.Bc4 Ne5 15.Qf5 Qd7
>					16.O-O b5 17.Bb3 Nbc6
>0:39	1/9	-1.09	3331036		13.Qf3+ Kg8 14.Bc4 Ne5 15.Qf5 Qd7
>					16.O-O b5 17.Bb3 Nbc6 18.Rad1
>1:38	1/10	-1.24	8769881		13.Qf3+ Kg8 14.Bc4 Ne5 15.Qf5 Qd7
>					16.O-O b5 17.Bb3 Nbc6 18.a3 d5
>2:19	1/10	-0.46	12525813	13.Bb5 Kg7 14.O-O Qg8 15.g6 Nf6
>					16.Bxf6+ Bxf6 17.Rxf6 Kxf6 18.Rf1+
>					Kg7 19.Rf7+ Qxf7 20.gxf7 axb5 21.Nxb5
>					Rxa2 22.Nxd6 Rxb2
>4:02	2/11	-0.46	22342279	13.Bb5 Kg7 14.O-O Qg8 15.g6 Nf6
>					16.Bxf6+ Bxf6 17.Rxf6 Kxf6 18.Rf1+
>					Kg7 19.Rf7+ Qxf7 20.gxf7 axb5 21.Nxb5
>					Rxa2 22.Nxd6 Rxb2

Finding 13.Bb5 should be very easy for every computer. This opening was first
introduced in a match between national teams of USSR and Argentina. The
Argentinians played this opening on several boards (not expecting 13.Bb5), all
the Russian Grandmasters found 13.Bb5 and went on to crush black.

The key defence move is 13...Rh7 which the Argentinians didn't find. Does
Chessmaster manage to find that move?



>
>jm

• Re: Positional testposition Howard Exner 16:53:40 12/13/02
• Re: Positional testposition Vincent Diepeveen 07:44:47 12/13/02
  • Re: Positional testposition Omid David Tabibi 08:11:07 12/13/02
    • Re: Positional testposition John Merlino 09:25:55 12/13/02
      • Re: Positional testposition Omid David Tabibi 11:10:02 12/13/02
        • Re: Positional testposition John Merlino 11:32:09 12/13/02
          • Re: Positional testposition Omid David Tabibi 11:57:12 12/13/02
            • Playing for a Win in Middlegame: How? Bob Durrett 07:21:38 12/18/02
            • Re: Positional testposition John Merlino 15:25:18 12/13/02
              • Re: Positional testposition Omid David Tabibi 15:35:39 12/13/02
            • Re: Positional testposition Uri Blass 12:57:03 12/13/02
• Re: Positional testposition John Merlino 13:39:04 12/12/02
  • Re: Positional testposition Omid David Tabibi 13:52:33 12/12/02

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