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Subject: Re: find g5! H10 : 1h35m

Author: Peter Kasinski

Date: 17:27:37 01/27/06

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On January 27, 2006 at 11:31:06, Vincent Lejeune wrote:

>[d]8/8/4b1p1/2Bp3p/5P1P/1pK1Pk2/8/8 b - - 0 1
>
>AMD 32 bits@2.1 Ghz
>
>Analysis by Hiarcs 10:
>...
>1...Rg4 2.Fe7 d4+ 3.exd4 Rxf4 4.Fg5+ Rf5 5.Fe7 Re4 6.Fb4 Fc4 7.Fc5 Ff7 8.Fe7
>  ³  (-0.45)   Profondeur: 15/30   00:00:57  25094kN
>1...Rg4 2.Fe7 d4+ 3.exd4 Rxf4 4.Fg5+ Rf5 5.Fe7 Re4 6.Fd8 Fc4 7.Fc7
>  ³  (-0.45)   Profondeur: 16/32   00:01:47  49652kN
>1...Rg4 2.Fe7 d4+ 3.exd4 Rxf4 4.Fg5+ Rf5 5.Fe7 Re4 6.Fd8 Fc4 7.Fc7 Rf3 8.Fd6 Fd5
>9.Rd3 b2 10.Rc2 Rg4 11.Fe7
>  ³  (-0.45)   Profondeur: 17/37   00:03:51  114209kN
>1...Rg4 2.Fe7 d4+ 3.exd4 Rxf4 4.Fg5+ Rf5 5.Fe7 Re4 6.Fd8 Fc4 7.Fe7 Ff7 8.Fg5 Fd5
>9.Ff6 Rf5 10.Fe7
>  ³  (-0.45)   Profondeur: 18/40   00:08:06  245108kN
>1...d4+
>  ³  (-0.45)   Profondeur: 18/45   00:12:09  351963kN
>1...d4+ 2.exd4 g5 3.fxg5 Rg3 4.g6 Rxh4 5.g7 Rg3 6.Fd6+ Rg4 7.Fb8 h4 8.Fc7 Rf3
>  ³  (-0.46)   Profondeur: 18/45   00:17:31  543084kN
>1...d4+ 2.exd4 g5 3.fxg5 Rg3 4.g6 Rxh4 5.g7 Rg4 6.Fb6 h4 7.Fc7 Fd5
>  ³  (-0.48)   Profondeur: 19/45   00:23:04  721939kN
>1...d4+
>  µ  (-0.73)   Profondeur: 20/46   00:31:45  998792kN
>1...d4+ 2.Fxd4 g5 3.hxg5 Ff5 4.e4 Rxe4 5.Ff2 Fe6 6.Fg3 Rf3 7.f5 Fxf5 8.Fe1 Fe6
>9.Rd3 Rg4 10.Fc3 Rxg5 11.Re3 h4
>  µ  (-0.80)   Profondeur: 20/48   01:21:14  2556474kN
>1...g5
>  µ  (-0.80)   Profondeur: 20/48   01:35:02  2998263kN
>1...g5 2.fxg5 d4+ 3.exd4 Rg3 4.g6 Rxh4 5.g7 Rh3 6.Fa3 h4 7.Rb4 Rg2 8.Rc5 h3 9.d5
>Ff7 10.d6 h2
>  µ  (-1.02)   Profondeur: 20/48   02:27:19  4449530kN
>1...g5
>  µ  (-1.27)   Profondeur: 21/50   02:47:41  5063613kN
>1...g5 2.fxg5 d4+ 3.Fxd4 Rg4 4.e4 Rxh4 5.g6 Rh3 6.Rd3 h4 7.Ff2 Rg4 8.Fb6 h3
>9.Fc7 Rf3 10.g7 Rg2 11.Rd2 h2
>  -+  (-1.54)   Profondeur: 21/50   03:44:58  6915081kN
>1...g5 2.fxg5 d4+ 3.Fxd4 Rg4 4.e4 Rxh4 5.g6 Rg4 6.Rd3 h4 7.Fe5 h3 8.Fd6 Rf3
>9.Fe5 Rg2 10.g7 h2 11.Fxh2 Rxh2 12.Rd2 Rg2 13.e5 Rf3
>  -+  (-1.66)   Profondeur: 22/53   04:49:02  8763910kN
>1...g5
>  -+  (-1.91)   Profondeur: 23/58   05:37:47  10110865kN
>1...g5 2.fxg5 d4+ 3.exd4 Rg3 4.g6 Rxh4 5.g7 Rg4 6.Rb2 h4 7.Ff8 h3 8.Fd6 Rf3
>  -+  (-2.37)   Profondeur: 23/58   06:57:41  12616540kN
>1...g5 2.fxg5 d4+ 3.exd4 Rg3 4.g6 Rxh4 5.g7 Rg4 6.Rb2 h4 7.Ff8 h3 8.Fd6 Rf3
>9.Rc3 Fg8 10.Fc7 Rg2 11.Rd2 Fe6
>  -+  (-2.37)   Profondeur: 24/58   08:09:24  14428509kN
>1...g5 2.fxg5 d4+ 3.exd4 Rg3 4.g6 Rxh4 5.g7 Fg8 6.Fb6 Rh3 7.Rd3 Fe6 8.Rc3 h4
>  -+  (-2.39)   Profondeur: 25/61   11:27:05  20002318kN
>
>(Vinvin,  27.01.2006)

I tried this Botvinnik classic on several programs a while ago.  On this
position Deep Shredder 9.12 (dual core 2.4 AMD) took a healthy 23 minutes to
find the key, and still was WAY ahead of Fruit 2.2.1 and Deep Junior 9.  As I
recall Fruit 2.2.1 on FX-57 took over 50 minutes on this.

PK



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