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Subject: Re: Hard endgame position : S9

Author: Ernest Bonnem

Date: 10:39:54 05/02/05

Go up one level in this thread


On May 02, 2005 at 13:17:44, Vincent Lejeune wrote:

>On May 02, 2005 at 10:11:41, Mihaly Szalai wrote:
>
>>[D]8/2p1k3/3p3p/2PP1pp1/1P1K1P2/6P1/8/8 w - -
>>
>>1. g4! fxg4 (1... gxf4 2. gxf5) 2. f5! dxc5+
>>(2... Kf6 3. cxd6 cxd6 4. b5 )
>>(2... g3 3. Ke3 g4 4. c6 h5 5. b5 h4 6. Ke2!)
>>(2... h5 3. Ke3 h4 (3... g3 4. cxd6+ Kxd6 5. f6) 4. Kf2)
>>3. bxc5 g3 4. Ke3 g4 5. c6!
>>(5. d6+? cxd6 6. c6 d5=) 5... h5 6. f6+ Kxf6 7. d6.
>>...
>
>S9 would play g4 after 2 min (AMD@3000+) but no winning eval after 19 min !
>

But after g4,  fxg4 instead of f5!
I don't think fxg4 is winning (I'll check...)


>Analysis by Shredder 9:
>
>1.Re3 Rd7 2.c6+ Rd8 3.b5 Re7 4.Rf3 Rd8 5.fxg5
>  =  (0.16)   Profondeur: 8/14   00:00:00  10kN
>1.Re3 Rd7 2.Rf3 Re7 3.fxg5
>  ²  (0.27)   Profondeur: 9/14   00:00:00  22kN
>1.Re3 Rd7 2.Rf3 Re7 3.fxg5 hxg5 4.Re3 Rd7 5.Rf3
>  =  (0.10)   Profondeur: 10/17   00:00:00  37kN
>1.Re3 Rd7 2.Rf3 Re7 3.fxg5 hxg5 4.Re3 Rd7
>  =  (0.10)   Profondeur: 11/19   00:00:00  70kN
>1.fxg5
>  =  (0.11)   Profondeur: 11/20   00:00:00  92kN
>1.fxg5 hxg5 2.Rd3 Rd7 3.Re3
>  =  (0.11)   Profondeur: 11/20   00:00:00  94kN
>1.fxg5 hxg5 2.Rd3 Rd7 3.Re3 Re7 4.Rf3 Rd7 5.Re2 Re7 6.Re3 Rd7 7.Rf3
>  =  (0.10)   Profondeur: 12/28   00:00:00  132kN
>1.Re3
>  =  (0.11)   Profondeur: 12/28   00:00:00  143kN
>1.Re3 Rd7 2.Rf3 Re7 3.fxg5
>  =  (0.11)   Profondeur: 12/28   00:00:00  151kN
>1.Re3 Rd7 2.Rf3 Re7 3.c6 Re8 4.Re3 Rd8 5.b5
>  =  (0.11)   Profondeur: 13/20   00:00:00  210kN
>1.fxg5
>  =  (0.12)   Profondeur: 13/27   00:00:00  230kN
>1.fxg5 hxg5 2.Rd3 Rd7 3.Re3 Re7 4.cxd6+
>  =  (0.12)   Profondeur: 13/32   00:00:00  259kN
>1.fxg5 hxg5 2.Rd3 Rd7 3.Re3 Re7 4.Rf3 Rd7 5.Re2 Re7 6.Re3
>  =  (0.11)   Profondeur: 14/32   00:00:00  443kN
>1.fxg5 hxg5 2.Rd3 Rd7 3.Re3 c6 4.Rd4 cxd5 5.Rxd5 dxc5 6.Rxc5 f4 7.gxf4 gxf4
>8.Rd4 Rd6 9.Re4 f3 10.Rxf3
>  =  (0.00)   Profondeur: 15/36   00:00:01  771kN
>1.fxg5 hxg5 2.Rd3 Rd7 3.Re3 c6 4.Rd4 cxd5 5.Rxd5 dxc5 6.Rxc5 f4 7.gxf4 gxf4
>8.Rd4 Rd6
>  =  (0.00)   Profondeur: 16/36   00:00:02  1226kN
>1.fxg5 hxg5 2.Rd3 Rd7 3.Re3 c6 4.Rd4 cxd5 5.Rxd5 dxc5 6.Rxc5 f4 7.gxf4 gxf4
>8.Rd4 Rd6 9.Re4 f3 10.Rxf3 Rc6 11.b5+
>  =  (0.00)   Profondeur: 17/39   00:00:03  1871kN
>1.fxg5 hxg5 2.Rd3 Rd7 3.Re3 c6 4.Rd4 cxd5 5.Rxd5 dxc5 6.Rxc5 f4 7.gxf4 gxf4
>8.Rd4 Rd6
>  =  (0.00)   Profondeur: 18/40   00:00:05  3074kN
>1.Re3
>  =  (0.01)   Profondeur: 18/40   00:00:06  4184kN
>1.Re3 Rd7 2.c6+ Rc8 3.Rf2 Rb8 4.g4 fxg4 5.fxg5 hxg5 6.Rg3 Ra7 7.Rxg4 Rb6 8.Rxg5
>Rb5 9.Rf5 Rxb4 10.Re6
>  =  (0.16)   Profondeur: 18/40   00:00:07  5058kN
>1.Re3 Rd8 2.fxg5 hxg5 3.Rd3 Re7 4.Re3 Rd7
>  =  (0.00)   Profondeur: 19/38   00:00:12  8589kN
>1.Re3 g4 2.Rd4 h5 3.Re3
>  =  (-0.01)   Profondeur: 20/40   00:00:23  15575kN
>1.fxg5
>  =  (0.00)   Profondeur: 20/43   00:00:23  15926kN
>1.fxg5 hxg5 2.Rd3 Rd7 3.Re3 c6 4.Rd4 cxd5 5.Rxd5 dxc5 6.Rxc5 f4 7.gxf4 gxf4
>8.Rd4 Rd6
>  =  (0.00)   Profondeur: 20/44   00:00:26  17373kN
>1.fxg5 hxg5
>  =  (-0.25)   Profondeur: 21/48   00:00:59  39173kN
>1.fxg5 hxg5 2.Rd3 Rd8 3.Re3 Rc8 4.Rd4 Rb7 5.Rd3 Ra6 6.Rc4 g4 7.cxd6 cxd6 8.Rd3
>Rb5 9.Re3 Rxb4 10.Rf4 Rc5 11.Rxf5 Rxd5 12.Rxg4
>  ³  (-0.28)   Profondeur: 21/50   00:01:20  52236kN
>1.Re3
>  ³  (-0.27)   Profondeur: 21/50   00:01:22  54116kN
>1.Re3 g4 2.Rd4 Rd7
>  ³  (-0.27)   Profondeur: 21/50   00:01:25  56027kN
>1.g4
>  ³  (-0.26)   Profondeur: 21/50   00:02:00  76673kN
>1.g4 fxg4 2.fxg5 dxc5+ 3.bxc5 g3 4.Re3 hxg5 5.Rf3 Rf6 6.Rxg3 Re5 7.d6 Re6 8.dxc7
>Rd7 9.c8D+ Rxc8 10.Rf3 Rd7 11.Rg3 Rc6
>  =  (0.00)   Profondeur: 21/50   00:02:48  106941kN
>1.g4 fxg4 2.fxg5 hxg5 3.Re3 Rf6 4.cxd6 cxd6 5.b5 Re7 6.Rf2 Rd7 7.Rg3 Rc7 8.Rxg4
>Rb6
>  =  (-0.18)   Profondeur: 22/47   00:03:11  120995kN
>1.g4 fxg4 2.fxg5 hxg5 3.Re3 Rf6 4.cxd6 cxd6 5.b5 Re7 6.Rf2 Rd7 7.Rg3 Rc7 8.Rxg4
>Rb6 9.Rxg5 Rxb5
>  =  (-0.18)   Profondeur: 23/49   00:03:53  147456kN
>1.g4 fxg4 2.fxg5 hxg5 3.Re3 Rf6 4.cxd6 cxd6 5.b5 Re7 6.Rf2 Rd7 7.Rg3 Rc7 8.Rxg4
>Rb6 9.Rxg5 Rxb5 10.Rf4 Rc4 11.Re4 Rc5 12.Re3 Rc4 13.Re4 Rc5 14.Re3 Rc4
>  =  (-0.18)   Profondeur: 24/53   00:05:18  198459kN
>1.g4 fxg4 2.fxg5 hxg5 3.c6 Rf6 4.b5 Re7 5.Re3 Rd8 6.Rf2 Rc8 7.Rg3 Rb8 8.Rxg4 Ra7
>9.Rxg5
>  =  (0.00)   Profondeur: 25/55   00:19:04  733325kN



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