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Up Topic Rybka Support & Discussion / Rybka Discussion / Did rybka 3 understand the fischer bishop ?
- - By maxrom (***) Date 2008-08-09 19:58 Edited 2008-08-09 20:49
Did rybka 3 understand the fischer bishop endings ?

Like this one : http://pl.youtube.com/watch?v=eAW16O4fLIQ
Parent - - By Carl Bicknell (*****) Date 2008-08-09 21:00
I don't think Rybka "understands" this endgame in the same way Fischer did. Fischer knew he was winning - Rybka doesn't until it searches deep.
At ply 24 Rybka gets Fischer's idea and sees it is winning.

So yes it plays like Fischer here, but mainly due to deep search.
Parent - - By maxrom (***) Date 2008-08-09 21:39
Can you post what rybka 3 analysis , at the first position, please ?

I'm intersted to what rybka 'thing' about this position .
Parent - - By George Tsavdaris (****) Date 2008-08-09 21:48
Do you mean this position:

Fischer,R - Taimanov,M  1971
3kB3/4n3/Kp4p1/p1p2p1p/P4P1P/2P3P1/1P6/8 w - - 0 1


Analysis by Rybka 3 1-cpu 32-bit :

62.Be8xg6 Ne7xg6 63.Ka6xb6 Ng6-f8 64.Kb6xc5 Nf8-d7+ 65.Kc5-b5 Nd7-f6 66.Kb5xa5 Kd8-c7 67.b2-b4 Nf6-e4
  +/-  (0.95)   Depth: 9   00:00:01  5kN
62.Be8xg6 Ne7xg6 63.Ka6xb6 Ng6-f8 64.Kb6xc5 Nf8-d7+ 65.Kc5-b5 Nd7-f6 66.Kb5xa5 Kd8-c7 67.b2-b4 Nf6-e4
  +/-  (0.95)   Depth: 10   00:00:01  6kN
62.Be8xg6 Ne7xg6 63.Ka6xb6 Ng6-f8 64.Kb6xc5 Nf8-d7+ 65.Kc5-b5 Nd7-f6 66.Kb5xa5 Kd8-c7 67.b2-b4 Nf6-e4
  +/-  (0.95)   Depth: 11   00:00:01  8kN
62.Be8xg6 Ne7xg6 63.Ka6xb6 Ng6-f8 64.Kb6xc5 Nf8-d7+ 65.Kc5-b5 Kd8-c7 66.Kb5xa5 Nd7-f6 67.Ka5-b5 Nf6-e4
  +/-  (0.90)   Depth: 12   00:00:02  11kN
62.Be8xg6
  +/-  (1.10)   Depth: 13   00:00:02  36kN
62.Be8xg6 Ne7xg6 63.Ka6xb6 Ng6-f8 64.Kb6xa5 Kd8-c7 65.Ka5-b5 Nf8-e6 66.a4-a5 Kc7-b7 67.a5-a6+ Kb7-a7 68.b2-b3 Ne6-c7+ 69.Kb5xc5 Ka7xa6 70.c3-c4 Nc7-e8 71.b3-b4 Ka6-b7 72.Kc5-d5
  +/-  (0.91)   Depth: 13   00:00:02  38kN
62.Be8xg6 Ne7xg6 63.Ka6xb6 Ng6-f8 64.Kb6xa5 Kd8-c7 65.Ka5-b5 Nf8-e6 66.a4-a5 Kc7-b7 67.a5-a6+ Kb7-a7 68.b2-b3 Ne6-c7+ 69.Kb5xc5 Ka7xa6 70.c3-c4 Nc7-e8 71.b3-b4 Ka6-b7 72.Kc5-d5 Kb7-c7
  +/-  (0.91)   Depth: 14   00:00:02  54kN
62.Be8xg6 Ne7xg6 63.Ka6xb6 Ng6-f8 64.Kb6xa5 Kd8-c7 65.Ka5-b5 Nf8-e6 66.a4-a5 Kc7-b7 67.a5-a6+ Kb7-a7 68.b2-b3 Ka7-a8 69.Kb5-c4 Ka8-a7 70.Kc4-d5 Ne6-c7+ 71.Kd5xc5
  +/-  (0.91)   Depth: 15   00:00:03  84kN
62.Be8xg6 Ne7xg6 63.Ka6xb6 Ng6-f8 64.Kb6xa5 Kd8-c7 65.Ka5-b5 Nf8-e6 66.a4-a5 Kc7-b7 67.a5-a6+ Kb7-a7 68.b2-b3 Ka7-a8 69.Kb5-c4 Ka8-a7 70.Kc4-d5 Ne6-c7+ 71.Kd5xc5
  +/-  (0.91)   Depth: 16   00:00:05  151kN
62.Be8xg6
  +/-  (1.11)   Depth: 17   00:00:11  384kN
62.Be8xg6
  +/-  (1.31)   Depth: 17   00:00:24  837kN, tb=9
62.Be8xg6
  +-  (1.71)   Depth: 17   00:00:49  1745kN, tb=35
62.Be8xg6 Ne7xg6 63.Ka6xb6 Ng6-e7 64.Kb6xa5 Ne7-d5 65.Ka5-b5 Nd5-e3 66.c3-c4 Ne3-f1 67.Kb5xc5
  +-  (1.76)   Depth: 17   00:01:20  2612kN, tb=79
62.Be8xg6 Ne7xg6 63.Ka6xb6 Ng6-e7 64.Kb6xa5 Ne7-d5 65.Ka5-b5 Nd5-e3 66.c3-c4 Ne3-f1 67.Kb5xc5
  +-  (1.76)   Depth: 18   00:01:22  2657kN, tb=79
62.Be8xg6 Ne7xg6 63.Ka6xb6 Ng6-e7 64.Kb6xa5 Ne7-d5 65.Ka5-b5 Nd5-e3 66.c3-c4 Ne3-f1 67.Kb5xc5
  +-  (1.76)   Depth: 19   00:01:27  2832kN, tb=81
62.Be8xg6
  +-  (1.96)   Depth: 20   00:01:47  3438kN, tb=92
62.Be8xg6
  +-  (2.16)   Depth: 20   00:02:26  4580kN, tb=204
62.Be8xg6 Ne7xg6 63.Ka6xb6 Ng6-f8 64.Kb6xc5 Nf8-d7+ 65.Kc5-d6 Nd7-b6 66.b2-b3 Kd8-c8 67.Kd6-e5 Kc8-d7 68.Ke5xf5 Nb6-d5 69.c3-c4 Nd5-c3 70.Kf5-g5 Nc3-e4+ 71.Kg5xh5 Ne4xg3+ 72.Kh5-g6
  +-  (2.23)   Depth: 20   00:03:32  6529kN, tb=351
62.Be8xg6 Ne7xg6 63.Ka6xb6 Ng6-f8 64.Kb6xc5 Nf8-d7+ 65.Kc5-d6 Nd7-b6 66.b2-b3 Kd8-c8 67.Kd6-e5 Kc8-d7 68.Ke5xf5 Nb6-d5 69.c3-c4 Nd5-c3 70.Kf5-g5 Nc3-e4+ 71.Kg5xh5 Ne4xg3+ 72.Kh5-g6 Ng3-e2 73.f4-f5 Ne2-f4+ 74.Kg6-g5 Nf4-h3+ 75.Kg5-f6 Nh3-f4 76.Kf6-g7 Nf4-h5+
  +-  (2.39)   Depth: 21   00:04:51  8846kN, tb=726
Parent - - By Carl Bicknell (*****) Date 2008-08-10 08:14
I actually meant the start position - but that one too I guess
Parent - By maxrom (***) Date 2008-08-10 10:52
Yes I mean the start position .
Parent - By lgbarn (**) Date 2008-08-10 11:57
IDeA solves this in minutes
Parent - By maxrom (***) Date 2008-08-10 16:48
Can you post what rybka thing about the start position ?
Up Topic Rybka Support & Discussion / Rybka Discussion / Did rybka 3 understand the fischer bishop ?

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