Author: Uri Blass
Date: 04:23:48 12/28/01
Go up one level in this thread
On December 28, 2001 at 07:11:39, Uri Blass wrote:
>On December 28, 2001 at 05:31:55, Ed Schröder wrote:
>
>>On December 28, 2001 at 05:12:55, Sune Larsson wrote:
>>
>>>
>>> [D]8/2p1k3/3p3p/2PP1pp1/1P1K1P2/6P1/8/8 w - - 0 1
>>>
>>> It's amazing how many tricks and tactics there can be hidden in
>>> apparently simple pawn endings! Like this one - 5 pawns each, nicely
>>> grouped. White has a latent passer on the queenside - and black ditto
>>> on the kingside. Both kings are occupied by keeping an eye on these
>>> runners, so it should be a draw - or...?
>>>
>>> It's a position from Camacho Martinez - Hernandez, 1995.
>>> White won it with the brilliant 1.g4!!
>>>
>>>
>>>[Event "Cuba"]
>>>[Site "?"]
>>>[Date "1995.??.??"]
>>>[Round "?"]
>>>[White "Camacho Martinez, G."]
>>>[Black "Hernandez, An.C"]
>>>[Result "1-0"]
>>>[WhiteElo "2140"]
>>>[BlackElo "2325"]
>>>[Annotator "Camacho,G"]
>>>[SetUp "1"]
>>>[FEN "8/2p1k3/3p3p/2PP1pp1/1P1K1P2/6P1/8/8 w - - 0 1"]
>>>[PlyCount "13"]
>>>[EventDate "1995.??.??"]
>>>
>>>{64/(600)} 1. g4 $3 fxg4 (1... gxf4 2. gxf5 $18) 2. f5 dxc5+ (2... Kf6 3. cxd6
>>>cxd6 4. b5 $18) (2... g3 3. Ke3 g4 4. c6 h5 5. b5 h4 6. Ke2 $1 $18) 3. bxc5 g3
>>>4. Ke3 g4 5. c6 $3 (5. d6+ $2 cxd6 6. c6 d5 $1 $11) 5... h5 6. f6+ Kxf6 7. d6
>>>1-0
>>>
>>>Sune
>>
>>
>>1.g4 found at 2:55, first sign of a win for white at 9:07
>>
>>Ed
>>
>>
>>00:00:20 17.00 -0.07 1.Ke3 g4 2.Kd2 Kd7 3.c6 Kd8
>>00:00:31 18.00 -0.38 1.Ke3 g4 2.Kd2 Kd7 3.Kd3 h5 4.Kd4
>> Kc8 5.Ke3 Kb7 6.Kd4 Ka6 7.Kc4 dxc5
>> 8.bxc5 h4 9.d6 hxg3 10.d7 g2 11.d8
>> g1 (28)
>>
>>00:00:46 19.00 -1.35 1.Ke3 g4 2.Kd2 h5 3.Ke3 Kd8 4.Kd2
>> Kc8 5.cxd6 cxd6 6.b5 Kc7 7.b6 Kxb6
>> 8.Ke3 Kc5 9.Ke2 Kxd5 10.Kf1 (43)
>>
>>00:00:53 19.01 -1.35 1.fxg5
>>00:01:04 19.01 -0.06 1.fxg5 hxg5 2.Kd3 Kd7 3.Kc2 Ke8
>>00:01:36 20.00 -0.42 1.fxg5 hxg5 2.Kd3 Kd8 3.Kd4 Kd7
>> 4.Kc3 Kc8 5.Kd4 Kb7 6.Kc4 Ka7 7.b5
>> Kb8 (90)
>>
>>00:02:55 20.08 -0.42 1.g4
>>00:02:58 20.08 -0.11 1.g4 fxg4 2.f5 h5 3.Ke3 h4 4.Kf2
>>00:09:07 21.00 2.09 1.g4 fxg4 2.f5 g3 3.Ke3 g4 4.c6
>>00:09:13 22.00 2.09 1.g4 fxg4 2.f5 g3 3.Ke3 g4 4.c6
>>
>>Athlon 1400, 200 Mb for hash.
>
>Very good result
>
>Yace that is supposed to be best in pawn endgames
>cannnot see g4 in a reasonable time on p800(64 mbyte hash)
>
>Yace could not finish depth 15 even after 27 minutes
>and it now considers move number 6 out of 9 legal moves
>(I have no idea what is move because chessbase gui
>does not tell me it)
>
>Yace is not slowed down and the
>number of nodes per second based on the output seems to be ok
>New position
>8/2p1k3/3p3p/2PP1pp1/1P1K1P2/6P1/8/8 w - - 0 1
>
>Analysis by Yace 0.99.56:
>
>1.fxg5 hxg5
> ² (0.34) Depth: 1 00:00:00
>1.Ke3 g4 2.Kd4 h5
> ² (0.38) Depth: 1 00:00:00
>1.Ke3 g4 2.Kd4 h5
> ² (0.38) Depth: 4 00:00:00
>1.Ke3 g4 2.Kd4 h5
> ² (0.38) Depth: 4 00:00:00
>1.Ke3 g4 2.Kd4 h5
> ² (0.38) Depth: 4 00:00:00
>1.Ke3 dxc5 2.bxc5 Kf6 3.fxg5+ hxg5 4.Kd4 f4 5.gxf4 gxf4 6.Ke4 Kg5 7.d6 cxd6
>8.cxd6
> ² (0.44) Depth: 5 00:00:00 57kN
>1.Ke3 g4 2.c6 h5 3.b5 Kf6
> ² (0.45) Depth: 6 00:00:00 386kN
>1.Ke3 Kd7 2.c6+ Ke8 3.b5 Ke7 4.Kf3
> ² (0.54) Depth: 7 00:00:02 1199kN
>1.Ke3 Kd7 2.c6+ Ke8 3.b5 Ke7 4.Kf3 Ke8 5.fxg5
> ² (0.43) Depth: 8 00:00:04 2347kN
>1.Ke3 Kd7 2.c6+ Ke8 3.b5 Kd8 4.fxg5 hxg5 5.Kd3 Ke8 6.Ke2 Kd8 7.Kf3 Ke7 8.b6 cxb6
>9.g4 fxg4+ 10.Ke2 g3 11.c7 g2 12.c8Q g1Q 13.Qe6+ Kd8 14.Qxd6+ Kc8 15.Qxb6
> ² (0.32) Depth: 9 00:00:09 5303kN
>1.fxg5 hxg5 2.c6 f4 3.gxf4 gxf4 4.b5 Kf6 5.b6 cxb6 6.c7 f3 7.c8Q f2 8.Qe6+ Kg5
> ² (0.33) Depth: 9 00:00:11 6453kN
>1.fxg5 hxg5 2.c6 Kd8 3.b5 Kc8 4.Kc3 f4 5.gxf4 gxf4 6.Kd3 f3 7.Ke3
> ² (0.34) Depth: 9 00:00:11 6453kN
>1.fxg5 hxg5 2.c6 Kd8 3.b5 Kc8 4.Kc3 Kd8 5.Kc4 Kc8 6.Kb4 f4 7.gxf4 g4
> ² (0.33) Depth: 10 00:00:17 9743kN
>1.fxg5 hxg5 2.c6 Kd8 3.b5 Kc8 4.Kc3 Kd8 5.Kc4 Kc8 6.Kd3 Kd8 7.Kc4 Kc8 8.Kd3 Kd8
>9.Kc4
> ² (0.33) Depth: 11 00:00:30 16278kN
>1.fxg5 hxg5 2.c6 Kd8 3.Ke3 Kc8 4.Kd3 Kb8 5.Ke2 Ka7 6.Kf2 Ka6 7.Ke3 Kb6 8.Ke2 Kb5
>9.Kd3
> ² (0.28) Depth: 12 00:01:12 39110kN
>1.fxg5 hxg5 2.c6 Kd8 3.Ke3 Kc8 4.Kd3 Kb8 5.Ke2 Ka7 6.Kf2 Ka6 7.Kf3
> = (0.18) Depth: 13 00:02:29 78388kN
>1.fxg5 hxg5 2.c6 Kd8 3.Ke3 Kc8 4.Kd3 Kb8 5.b5 Ka7 6.Kc4 Kb6 7.Kb4
> = (0.11) Depth: 14 00:07:50 240082kN
>1.fxg5 hxg5 2.c6 Kd8 3.Ke3 Kc8 4.Kd3 Kb8 5.b5 Ka7 6.Kc4 Kb6 7.Kb4 f4
> = (0.11) Depth: 14 00:13:54 422504kN
>1.fxg5 hxg5 2.c6 Kd8 3.Ke3 Kc8 4.Kd3 Kb8 5.Ke3 Ka7 6.Kd3 Kb8
> = (0.00) Depth: 15 00:15:41 462485kN
>
>(Blass, Tel-aviv 28.12.2001)
>
> Uri
Yace finally solved it after a long time
1.g4 fxg4 2.f5 h5 3.cxd6+ Kxd6 4.f6 g3 5.Ke3 h4 6.Kf3 g4+
= (0.01) Depth: 15 00:36:14 1023876kN
(Blass, Tel-aviv 28.12.2001)
Uri
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.