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Subject: Re: Test Position

Author: Mihaly Szalai

Date: 14:46:45 04/23/04

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On April 23, 2004 at 16:52:42, John Merlino wrote:

>This position is from The King v Diep in the recent ICT4.
>
>[D]r3k2r/pp1bppbp/2n3p1/8/8/2N1B1P1/PP2PPBP/2RK3R w kq - 0 13
>
>The Chessmaster 9000 database has two games with this position, played by top
>GMs (Andersson v Leko in 1996 and Smirin v Alterman in 1998). In both cases,
>White played f4 and won.
>
>The King, however, chose Kc2 and is soon forced over to a3.
>
>Here is what CM_SKR on an AMD 2500+ says about this position:
>
>Time	Depth	Score	Positions	Moves
>0:00	1/3	-0.66	601		13.Nd5 Ne5 14.Nb6
>0:00	1/3	-0.05	2033		13.Nd5 O-O 14.b3 Rad8
>0:00	1/3	-0.01	2432		13.f4 O-O 14.Rf1 Rac8
>0:00	1/4	-0.01	4571		13.f4 O-O 14.Rf1 Rac8
>0:00	1/5	-0.18	13939		13.f4 O-O 14.Ke1 Rac8 15.Kf2 Be6
>0:00	1/5	-0.16	38323		13.Rg1 O-O 14.Ke1 Rac8 15.Kf1 Be6
>0:00	1/6	-0.16	65745		13.Rg1 O-O 14.Ke1 Rac8 15.Kf1 Be6
>0:00	1/6	-0.09	105042		13.f4 O-O 14.Ke1 Rac8 15.Kf2 Be6
>					16.Rhd1
>0:01	1/7	-0.09	237224		13.f4 O-O 14.Ke1 Rac8 15.Kf2 Be6
>					16.Rhd1
>0:01	1/7	0.04	370575		13.Kc2 Bf5+ 14.Ne4 Rd8 15.Kb1 O-O
>					16.Rhd1 Rxd1 17.Rxd1
>0:02	1/8	-0.01	572098		13.Kc2 Bf5+ 14.Ne4 Bg4 15.f3 Be6
>					16.Kb1 O-O 17.f4 Rac8
>0:06	1/9	-0.04	1627991		13.Kc2 Bf5+ 14.Ne4 O-O-O 15.Kb1
>					Bd4 16.Rhf1 Bxe3 17.fxe3 Kb8 18.g4
>					Bxg4 19.Rxf7 Bxe2
>0:09	1/9	-0.01	2154891		13.f4 Rc8 14.Ke1 b6 15.Kf2 Na5
>					16.Nd5 Nc4 17.b3 Nxe3 18.Rxc8+
>					Bxc8 19.Kxe3
>0:15	1/10	0.04	3718356		13.f4 O-O 14.Ke1 e5 15.Kf2 exf4
>					16.gxf4 Be6 17.Rhd1 Rac8
>0:39	1/11	-0.07	9379052		13.f4 O-O-O 14.Ke1 Kb8 15.Bc5 Rhe8
>					16.Kf2 Be6 17.Rhd1 Rxd1 18.Rxd1 Rc8
>0:50	1/11	0.00	12219988	13.Kc2 Bf5+ 14.Ne4 O-O 15.Kb1 Rfd8
>					16.Rhd1 Rxd1 17.Rxd1 Rc8 18.h3
>					b6 19.g4
>1:06	1/11	0.03	16084826	13.Ke1 O-O 14.f4 e5 15.Kf2 exf4
>					16.gxf4 Be6 17.Rhd1 Rac8 18.Bd5
>					Bxd5 19.Rxd5
>2:04	1/12	0.04	30620046	13.Ke1 O-O-O 14.h4 Kb8 15.h5 Be6
>					16.Bxc6 bxc6 17.Rh4 Ka8 18.Kf1
>					Kb7 19.Rb4+ Ka8 20.Ra4
>
>How do your programs see this? Also, please check to see if your programs have
>book moves for this position.
>
>Many thanks,
>
>jm

Hello John,

13. f4 is the Fritz 8 book move and here is the analysis:

New game,
r3k2r/pp1bppbp/2n3p1/8/8/2N1B1P1/PP2PPBP/2RK3R w kq - 0 1

Analysis by Fritz 8:

1.h3 Rd8 2.Ke1 h6 3.Rh2 Bf5 4.Bxc6+ bxc6 5.Bxa7
  =  (0.03)   Depth: 7/20   00:00:00  91kN
1.h4!
  =  (0.06)   Depth: 7/20   00:00:00  136kN
1.h4 Rd8 2.Ke1 h5 3.Bf4 Bf5
  =  (0.09)   Depth: 7/20   00:00:00  151kN
1.h4 Rd8 2.Kc2 Bf5+ 3.Kb3 a6 4.Rhd1 Rxd1 5.Rxd1 h6
  =  (0.00)   Depth: 8/25   00:00:00  343kN
1.h3!
  =  (0.03)   Depth: 8/25   00:00:00  362kN
1.h3 Rd8 2.Ke1 h6 3.Rd1 Rh7 4.Bf4 Bf5 5.e3
  =  (0.06)   Depth: 9/25   00:00:01  757kN
1.h4!
  =  (0.09)   Depth: 9/25   00:00:02  891kN
1.h4 Rd8 2.Ke1 h5 3.Rg1 Rg8 4.Rd1 Rc8
  =  (0.06)   Depth: 10/28   00:00:06  2632kN
1.h4 Rd8 2.Ke1 h5 3.Rd1 b6 4.a3 Rg8 5.Bg5 Nd4 6.Nd5
  =  (0.09)   Depth: 11/34   00:00:32  13942kN
1.h4 h6 2.Ke1 Rc8 3.h5 g5 4.a3 b6 5.Rf1 Nd4 6.Bxd4 Bxd4 7.e3
  =  (0.09)   Depth: 12/37   00:01:24  39012kN

(Szalai, Celeron 1.7 GHz 64 MB 23.04.2004)

Mihaly



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