Author: Uri Blass
Date: 04:11:39 12/28/01
Go up one level in this thread
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
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