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Subject: Re: Only a simple pawn ending but Shredder is blind!

Author: Aaron Gordon

Date: 18:19:08 06/01/04

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On June 01, 2004 at 13:09:15, Eduard Nemeth wrote:

>Only a simple pawn ending – but Shredder is blind!
>
>
>[Event "Blitz:5'"]
>[Site "Online Chess Game"]
>[Date "????.??.??"]
>[Round "?"]
>[White "Eduard"]
>[Black "Opponent"]
>[Result "*"]
>[SetUp "1"]
>[FEN "8/5p2/2k3pp/4PP1P/p1K3P1/8/8/8 b - - 0 49"]
>[PlyCount "9"]
>[TimeControl "300"]
>
>49... g5 (49... a3 50. e6 fxe6 51. hxg6 a2 52. g7 a1=Q 53. g8=Q $11) 50. Kb4
>Kd5 51. e6 fxe6 52. f6 Kd6 53. Kxa4 Kd7 $19 {and black wins!} *
>
>
>[D]8/5p2/2k3pp/4PP1P/p1K3P1/8/8/8 b - - 0 1
>
>Analysis by Shredder 7.04:
>
>49...g5 50.Kb4 Kd5 51.e6 fxe6 52.f6 Kd6 53.Kxa4 e5 54.Kb5 e4 55.Kc4 Ke5 56.f7
>Ke6 57.f8D Kd7 58.Dxh6
>  µ  (-0.73)   Tiefe: 17/33   00:00:17  2100kN, tb=6047
>49...g5 50.Kb4 Kd5 51.e6 fxe6 52.f6 Kd6 53.Kxa4 e5 54.Kb5 Ke6 55.Kc4 Kf7 56.Kc5
>Ke6 57.Kc4 Kf7 58.Kc5 Ke6 59.Kc4 Kf7
>  =  (0.00)   Tiefe: 17/33   00:00:19  2279kN, tb=6197
>49...a3 50.fxg6 fxg6 51.Kb3 g5 52.e6 Kd6 53.Ka2 Kxe6 54.Kb1 Ke5 55.Kc1 a2 56.Kb2
>Kf4 57.Kc1 a1D+ 58.Kc2
>  =  (-0.01)   Tiefe: 17/39   00:01:54  12976kN, tb=47382
>
>(Nemeth, Privat 01.06.2004)
>
>My World:
>
>http://www.beepworld.de/members37/computerschach/
>
>Eduard

Looks like it's time to upgrade, Eduard. That last line shows you're only
getting 113.8kn/s... which is slow. Even so, it should find it with a reasonable
hash size (I'd never go below 64mb even on very slow hardware).

Here is 7.04 on a single XP 2800+, 256mb hash. *3* seconds.

Analysis by Shredder 7.04:

1...gxf5 2.gxf5
  -+  (-1.44)   Depth: 1/2   00:00:00
1...gxf5 2.gxf5
  -+  (-1.44)   Depth: 1/2   00:00:00
1...a3
  -+  (-2.35)   Depth: 1/2   00:00:00
1...a3
  -+  (-2.35)   Depth: 1/2   00:00:00
1...a3 2.fxg6 fxg6
  ³  (-0.38)   Depth: 2/2   00:00:00
1...a3 2.Kb3
  µ  (-0.97)   Depth: 2/3   00:00:00
1...gxf5 2.gxf5 a3
  -+  (-2.04)   Depth: 2/3   00:00:00
1...gxf5 2.gxf5 a3
  -+  (-2.04)   Depth: 2/3   00:00:00
1...gxf5 2.gxf5 a3 3.Kb3
  ³  (-0.60)   Depth: 3/4   00:00:00
1...gxf5 2.gxf5 a3 3.Kb3
  ³  (-0.60)   Depth: 3/4   00:00:00
1...g5 2.Kb4 Kd5 3.Kxa4 Kxe5
  ³  (-0.66)   Depth: 3/6   00:00:00
1...g5 2.Kb4 Kd5 3.Kxa4 Kxe5
  ³  (-0.66)   Depth: 3/6   00:00:00
1...g5 2.Kb4 Kd5 3.Kxa4 Kxe5
  ³  (-0.66)   Depth: 4/5   00:00:00
1...gxf5 2.gxf5 a3 3.Kb3 Kd5
  µ  (-0.78)   Depth: 4/7   00:00:00
1...gxf5 2.gxf5 a3 3.Kb3 Kd5
  µ  (-0.78)   Depth: 4/7   00:00:00
1...gxf5 2.gxf5 a3 3.Kb3 Kd5 4.Kxa3 Kxe5
  µ  (-0.91)   Depth: 5/8   00:00:00
1...gxf5 2.gxf5 a3 3.Kb3 Kd5 4.Kxa3 Kxe5
  µ  (-0.91)   Depth: 6/11   00:00:00
1...gxf5 2.gxf5 a3 3.Kb3 Kd5 4.e6 fxe6 5.fxe6 Kd6
  ³  (-0.62)   Depth: 7/10   00:00:00  3kN, tb=1
1...gxf5 2.gxf5 a3 3.Kb3 Kd5 4.e6 fxe6 5.fxe6 Kd6
  ³  (-0.62)   Depth: 7/13   00:00:00  3kN, tb=5
1...gxf5 2.gxf5 a3 3.Kb3 a2 4.Kxa2 Kc5 5.e6 fxe6
  ³  (-0.29)   Depth: 8/11   00:00:00  7kN, tb=36
1...gxf5 2.g5 Kb6 3.gxh6 Ka5 4.e6 f4 5.exf7
  =  (0.21)   Depth: 8/15   00:00:00  12kN, tb=54
1...gxf5 2.g5 a3 3.gxh6 a2 4.h7 a1Q 5.h8Q Qa4+ 6.Kd3
  ²  (0.40)   Depth: 8/15   00:00:00  14kN, tb=54
1...a3 2.hxg6 fxg6 3.Kb3 gxf5 4.gxf5 h5 5.Kc4
  ²  (0.39)   Depth: 8/19   00:00:00  21kN, tb=144
1...a3 2.e6 fxe6 3.fxg6 a2 4.g7 a1Q 5.g8Q Qe5 6.Kd3
  =  (0.09)   Depth: 8/21   00:00:00  30kN, tb=165
1...gxh5 2.Kb4 hxg4 3.e6 fxe6 4.Ka3
  =  (0.08)   Depth: 8/21   00:00:00  34kN, tb=179
1...gxh5 2.gxh5 a3 3.Kb3 Kd5 4.e6 fxe6 5.fxe6 Kxe6 6.Kxa3
  =  (-0.01)   Depth: 8/21   00:00:00  34kN, tb=180
1...gxh5 2.gxh5 a3 3.Kb3 f6 4.Kxa3 fxe5 5.f6 Kd6 6.Kb4
  ²  (0.27)   Depth: 9/13   00:00:00  36kN, tb=231
1...gxh5 2.gxh5 a3 3.Kb3 Kd5 4.e6 fxe6 5.f6 Kd6 6.Kxa3
  ²  (0.39)   Depth: 9/14   00:00:00  39kN, tb=263
1...g5 2.Kb4 Kd5 3.e6 fxe6 4.Ka3 exf5 5.Ka2 fxg4
  ²  (0.38)   Depth: 9/19   00:00:01  54kN, tb=381
1...g5 2.Kb4 Kd5 3.e6 fxe6 4.Ka3 exf5 5.Ka2 fxg4
  =  (0.03)   Depth: 9/19   00:00:01  55kN, tb=381
1...g5 2.Kb4 Kd5 3.e6 fxe6 4.f6 Kd6 5.Kxa4 e5 6.Kb5
  =  (-0.11)   Depth: 9/19   00:00:01  56kN, tb=381
1...g5 2.Kb4 Kd5 3.e6 fxe6 4.f6 Kd6 5.Kxa4 e5 6.Kb5
  =  (0.03)   Depth: 10/16   00:00:01  66kN, tb=402
1...a3 2.e6 fxe6 3.hxg6 a2 4.g7 a1Q 5.g5 hxg5 6.g8Q exf5 7.Qa8+ Qxa8
  =  (0.02)   Depth: 10/22   00:00:01  90kN, tb=573
1...a3 2.Kb3 gxf5 3.gxf5 Kd5 4.e6 Kd6 5.exf7 Ke7 6.Ka2 Kxf7 7.Kxa3
  =  (0.01)   Depth: 10/25   00:00:02  111kN, tb=884
1...a3 2.Kb3 gxf5 3.gxf5 Kd5 4.e6 Kd6 5.exf7 Ke7 6.Ka2 Kxf7 7.Kxa3
  =  (0.01)   Depth: 11/25   00:00:03  164kN, tb=1207
1...g5 2.Kb4 Kd5 3.e6 fxe6 4.f6 Kd6 5.f7 Ke7 6.Kc4
  =  (0.00)   Depth: 11/25   00:00:03  171kN, tb=1213
1...g5 2.Kb4 Kd5 3.e6 fxe6 4.fxe6 Kxe6 5.Kxa4 Kf6 6.Kb5 Ke5 7.Kc6
  ³  (-0.35)   Depth: 11/25   00:00:03  173kN, tb=1213
1...g5 2.Kb4 Kd5 3.e6 fxe6 4.f6 Kd6 5.Kxa4 e5 6.Kb5 Ke6
  µ  (-1.16)   Depth: 11/25   00:00:03  180kN, tb=1214
1...g5 2.Kb4 Kd5 3.e6 fxe6 4.Ka3 exf5 5.Kb4 fxg4 6.Ka5
  -+  (-1.41)   Depth: 12/17   00:00:03  203kN, tb=1260
1...g5 2.Kb4 Kd5 3.Kxa4 Kxe5 4.f6 Kxf6 5.Kb5 Ke6 6.Kb6 f5 7.Kb7
  -+  (-1.91)   Depth: 12/18   00:00:03  212kN, tb=1260
1...g5 2.Kb4 Kd5 3.e6 a3
  -+  (-1.91)   Depth: 12/18   00:00:03  221kN, tb=1260
1...g5 2.Kb4 Kd5 3.e6 fxe6 4.f6 Kd6 5.Kxa4 Kd7 6.f7 e5 7.f8Q Ke6
  -+  (-1.87)   Depth: 13/22   00:00:03  282kN, tb=1398
1...g5 2.Kb4 Kd5 3.e6 fxe6 4.f6 Kd6 5.Kxa4 e5 6.Kb4 Ke6 7.Kc3 Kf7 8.Kc4 e4 9.Kc3
Kxf6
  -+  (-1.70)   Depth: 14/24   00:00:04  379kN, tb=1656
1...g5 2.Kb4 Kd5 3.e6 fxe6 4.f6 Kd6 5.Kxa4 Kd7 6.f7 Ke7 7.Kb4 Kxf7 8.Kc5 e5
9.Kd5
  -+  (-1.65)   Depth: 15/24   00:00:04  578kN, tb=1879
1...g5 2.Kb4 Kd5 3.e6 fxe6 4.f6 Kd6 5.Kxa4 Kd7 6.Kb5 Ke8 7.Kc4 Kf7 8.Kd3 Kxf6
9.Kd2
  -+  (-1.48)   Depth: 16/27   00:00:05  979kN, tb=2121
1...g5 2.Kb4 Kd5 3.e6 fxe6 4.f6 Kd6 5.Kxa4 Kd7 6.f7 Ke7 7.Kb5 Kxf7 8.Kc6 Ke7
9.Kc7 e5 10.Kb6 Kf6
  -+  (-1.66)   Depth: 17/28   00:00:08  1906kN, tb=2899
1...g5 2.Kb4 Kd5 3.e6 fxe6 4.f6 Kd6 5.Kxa4 Kd7 6.Kb5 Ke8 7.Kc4 Kf7 8.Kd3 Kxf6
9.Ke4 Kg7 10.Ke5 Kf7
  -+  (-1.46)   Depth: 18/31   00:00:10  2639kN, tb=3758
1...g5 2.Kb4 Kd5 3.e6 fxe6 4.f6 Kd6 5.Kxa4 Kd7 6.Kb5 Ke8 7.Kc4 Kf7 8.Kd3 Kxf6
9.Ke4 Kg7 10.Ke5 Kf7
  -+  (-1.44)   Depth: 19/33   00:00:20  6494kN, tb=7195
1...g5 2.Kb4 Kd5 3.e6 fxe6 4.f6 Kd6 5.Kxa4 Kd7 6.Kb5 Ke8 7.Kc4 Kf7 8.Kd3 Kxf6
9.Ke4 Ke7 10.Ke3 Kd6 11.Kf3
  -+  (-1.56)   Depth: 20/34   00:00:37  16117kN, tb=11279
1...g5 2.Kb4 Kd5 3.e6 fxe6 4.f6 Kd6 5.Kxa4 Kd7 6.Kb5 Ke8 7.Kc4 Kf7 8.Kd3 Kxf6
9.Ke4 Ke7 10.Ke3 Kd6 11.Ke4 e5 12.Kf3
  -+  (-1.56)   Depth: 21/36   00:00:50  18513kN, tb=18895



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