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Subject: Re: Rebel - IsiChess: Some notes

Author: Uri Blass

Date: 17:42:32 10/21/03

Go up one level in this thread


On October 21, 2003 at 18:52:24, Dann Corbit wrote:

>On October 20, 2003 at 04:32:09, Jeroen Noomen wrote:
>
>>[Event "23rd DOCC"]
>>[Site "Leiden NED"]
>>[Date "2003.10.19"]
>>[Round "5"]
>>[White "Rebel"]
>>[Black "IsiChess MMX"]
>>[Result "1-0"]
>>[PlyCount "69"]
>>[EventDate "2003.??.??"]
>>
>>1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7
>>
>>Woops, is IsiChess going to repeat the Tiger-Fritz game from the Leiden
>>tournament in May 2003!?
>>
>>8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5 11. Bxf6 Nxf6 12. g5 Nd7 13. f5 Nc5 14. f6
>>gxf6 15. gxf6 Bf8 16. Rg1 b4?
>>
>>No, it isn't! But the textmove is already a clear loser.
>>
>>17. Nd5 exd5 18. exd5 Bd7 19. Rg7 Qa5
>
>Shredder finds a small advantage here if instead of 19 .. Qa5, black does a
>longside castle:
>
>18 .. Bc8d7 Rg1g7 000 Rg7xf7 Bf8h6 Kc1b1 Rd8f8 Rf7e7 Qc7d8 Rd1e1 Bh6d2 Bf1xa6
>Nc5xa6 Qf3e2 Na6c7 Qe2xd2

You should compare with previous games before you copy some line from computer

A previous game with Bd7 and 0-0-0 was already posted.
White played Rxf8+ and not Rf7-e7

see http://www.talkchess.com/forums/1/message.html?322670

I do not claim that white is winning and I did not do serious analysis of
22...Bxf8 that was not played(Diep played 22...Rxf8) but shredder see a clear
advantage for white both after 22...Bxf8 and after 22.Rxf8 23.Ne6

Some analysis with shredder7.04

[D]2k2b1r/2qb3p/p2p1P2/2nP4/1p1N4/5Q2/PPP4P/1K1R1B2 w - - 0 1

Analysis by Shredder 7.04:

23.Nc6 Bxc6 24.dxc6
  ³  (-0.28)   Depth: 1/2   00:00:00
23.Nc6 Bxc6 24.dxc6
  =  (0.03)   Depth: 1/3   00:00:00
23.Re1
  =  (0.10)   Depth: 1/3   00:00:00
23.Re1
  =  (0.10)   Depth: 1/3   00:00:00
23.Re1 Bh6
  =  (0.10)   Depth: 2/3   00:00:00
23.Re1 a5 24.Bh3
  ²  (0.26)   Depth: 3/6   00:00:00
23.Re1 Kb8 24.Bc4 Bh6
  =  (0.15)   Depth: 4/8   00:00:00
23.Re1 Kb7 24.Bc4 Ka7 25.h4
  ²  (0.27)   Depth: 5/11   00:00:00
23.Re1 Kb7 24.Bh3 Ba4 25.Qd3 Nxd3 26.cxd3
  ²  (0.27)   Depth: 6/14   00:00:00  21kN
23.Bh3 Bxh3 24.Qxh3+ Qd7 25.Qh5 Ne4 26.Qh4 Qg7
  ²  (0.28)   Depth: 6/18   00:00:00  28kN
23.Bh3 Bxh3 24.Qxh3+ Qd7 25.Qf1 Qa4 26.Re1 Bh6
  ²  (0.45)   Depth: 6/18   00:00:00  35kN
23.Bh3 Bxh3 24.Qxh3+ Qd7 25.Qf3 Rg8 26.Nc6 Qg4 27.Qf5+ Qxf5
  ²  (0.41)   Depth: 7/19   00:00:00  69kN
23.Nc6 Bh6 24.Bh3 Re8 25.Bxd7+ Qxd7 26.f7 Kc7 27.fxe8Q
  ²  (0.42)   Depth: 7/19   00:00:00  123kN
23.Nc6 Bxc6 24.dxc6 Qf7 25.Qf4 Kc7 26.Bc4 Qe8 27.Bd5
  ²  (0.47)   Depth: 7/20   00:00:01  162kN
23.Nc6 Kb7 24.Nxb4 Bh6 25.Be2 Rf8 26.Qf5 Bxf5
  ²  (0.52)   Depth: 8/24   00:00:02  384kN
23.Bh3 Bxh3 24.Qxh3+ Qd7 25.Qf3 Rg8 26.Re1 Qa7
  ²  (0.53)   Depth: 8/24   00:00:02  427kN
23.Bh3 Bxh3 24.Qxh3+ Qd7 25.Qf3 Rg8 26.Re1 Bh6 27.Nc6 Qg4
  ²  (0.61)   Depth: 8/24   00:00:02  460kN
23.Bh3 Bxh3 24.Qxh3+ Qd7 25.Qf3 Qf7 26.Nc6 Nd7 27.Qe2 Nxf6 28.Qxa6+ Qb7
  ²  (0.62)   Depth: 9/24   00:00:04  651kN
23.Nc6 Kb7 24.Nxb4 Bh6 25.Bh3 a5 26.Bxd7 Nxd7
  ²  (0.63)   Depth: 9/24   00:00:04  780kN
23.Nc6 Kb7 24.Nxb4 a5 25.Nd3 Ka8 26.Nxc5 Qxc5 27.Qb3
  ²  (0.69)   Depth: 9/24   00:00:05  912kN
23.f7 h5 24.Re1 Bg4 25.Qf6 Rh6 26.Re8+ Qd8 27.Rxd8+ Kb7 28.Rxf8
  ²  (0.70)   Depth: 9/26   00:00:07  1217kN
23.f7 h5 24.Re1 Kb7 25.Ne6 Qa5 26.h4 Ka7 27.Nxf8 Rxf8 28.Qxh5
  ±  (0.87)   Depth: 9/26   00:00:07  1339kN
23.f7 h5 24.Ne6 Qb6 25.Bh3 Qa5 26.Nxc5 Qxc5 27.Bxd7+ Kxd7 28.Qe4 Kc7 29.Qe7+
  ±  (0.89)   Depth: 10/26   00:00:11  1890kN
23.f7 h5 24.Ne6 Qb6 25.Re1 Kb7 26.h4 Ka7 27.Nxf8 Rxf8 28.Qxh5 Rc8
  ±  (0.92)   Depth: 11/26   00:00:16  2857kN
23.f7 h5 24.Ne6 Qb6 25.Qf2 Na4 26.Qf6 Nc3+ 27.Ka1 Kb8 28.Qxh8 Qc7
  ±  (1.17)   Depth: 12/28   00:00:28  4882kN
23.f7 h5 24.Ne6 Qa5 25.Qe3 b3 26.cxb3 Bxe6 27.dxe6 Rg8
  +-  (1.66)   Depth: 12/31   00:00:43  7457kN
23.f7 h5 24.Ne6 Bxe6 25.dxe6 Nxe6 26.Bh3 Qe7 27.Re1 Rh6 28.Qa8+ Kd7 29.Bg2 Qd8
30.Bc6+ Ke7 31.Qb7+ Kf6 32.Bd5 Nc7
  +-  (1.75)   Depth: 13/38   00:01:29  15690kN
23.f7 h5 24.Ne6 Bxe6 25.dxe6 Nxe6 26.Bh3 Qe7 27.Re1 Rh6 28.Qa8+ Kd7 29.Bg2 Qd8
30.Bc6+ Ke7 31.Qa7+ Kf6 32.Bd5
  +-  (1.72)   Depth: 14/38   00:02:43  28731kN

(, eim 22.10.2003)

After 22...Rxf8 23.Ne6 and learning the line 23...Nxe6 24.dxe6 Bxe6 25.Bh3

[D]2k2r2/2qb3p/p2pNP1b/2nP4/1p6/5Q2/PPP4P/1K1R1B2 b - - 0 1

Analysis by Shredder 7.04:

23...Bxe6 24.dxe6 Nxe6
  =  (-0.07)   Depth: 1/2   00:00:00
23...Bxe6 24.dxe6 Nxe6
  ³  (-0.63)   Depth: 1/3   00:00:00
23...Bxe6 24.dxe6 Nxe6 25.Bxa6+ Kd8
  =  (0.19)   Depth: 2/5   00:00:00
23...Bxe6 24.dxe6 Nxe6 25.Bxa6+ Kd8
  =  (0.24)   Depth: 2/5   00:00:00
23...Bxe6 24.dxe6 Nxe6 25.Bxa6+ Kd8
  =  (0.24)   Depth: 3/13   00:00:00
23...Bxe6 24.dxe6 Nxe6 25.Bxa6+ Kb8 26.h4
  ²  (0.44)   Depth: 4/13   00:00:00
23...Bxe6 24.dxe6 Nxe6 25.Qf5 Qd7 26.Bxa6+ Kb8 27.Qf3
  ²  (0.63)   Depth: 5/15   00:00:00
23...Bxe6 24.dxe6 Nxe6 25.Qf5 Qd7 26.Bxa6+ Qb7 27.Bxb7+ Kd8 28.Qxe6
  ±  (0.88)   Depth: 6/17   00:00:00  21kN
23...Bxe6 24.dxe6 Nxe6 25.Qf5 Qd7 26.Bxa6+ Kb8 27.Bb5 Qc8 28.Rxd6
  ±  (1.35)   Depth: 6/17   00:00:00  34kN
23...Bxe6 24.dxe6 Nxe6 25.Bh3 Re8 26.Bxe6+ Rxe6 27.Qh3 Kd7 28.Qxh6 Qb7
  +-  (1.60)   Depth: 7/21   00:00:00  91kN
23...Bxe6 24.dxe6 Nxe6 25.Bh3 Rf7 26.Bxe6+ Kb8
  +-  (2.10)   Depth: 7/21   00:00:00  105kN
23...Bxe6 24.dxe6 Nxe6 25.Bh3 Qc5 26.Bxe6+ Kb8 27.f7 Qe5 28.Bc4 a5
  +-  (3.00)   Depth: 7/23   00:00:01  221kN
23...Qa5 24.Nxf8 b3 25.cxb3 Bxf8 26.Bxa6+ Qxa6 27.Qd3 Nxd3
  +-  (2.99)   Depth: 7/23   00:00:01  237kN
23...Qa5 24.Nxf8 b3 25.cxb3 Bxf8 26.Bxa6+ Qxa6 27.Qd3 Nxd3
  +-  (2.64)   Depth: 7/23   00:00:01  245kN
23...Qa5 24.Nxf8 Bxf8 25.Bc4 Qd8 26.Re1 a5 27.f7
  +-  (1.74)   Depth: 7/23   00:00:01  283kN
23...Qb6 24.Nxf8 Bxf8 25.Re1 Kb8 26.Qe4 Nxe4
  +-  (1.73)   Depth: 7/23   00:00:01  316kN
23...Qb6 24.Nxf8 Bxf8 25.Re1 a5 26.Qh5 Qd8 27.f7 h6
  +-  (1.64)   Depth: 7/23   00:00:02  336kN
23...Qb6 24.Nxf8 Bxf8 25.Re1 Qd8 26.Bc4 a5 27.c3 bxc3 28.Qxc3
  +-  (1.72)   Depth: 8/23   00:00:02  471kN
23...Qa5 24.Nxf8 Bxf8 25.Bc4
  +-  (1.71)   Depth: 8/23   00:00:03  525kN
23...Qa5 24.Nxf8 Bxf8 25.Bc4 Kb8 26.Rg1 Qd8 27.Rg8 a5
  +-  (1.59)   Depth: 8/23   00:00:03  561kN
23...Qa5 24.Nxf8 Bxf8 25.f7 Qd8 26.Re1 Bg7 27.Qf4 Qf8 28.Bc4
  +-  (1.68)   Depth: 9/23   00:00:04  659kN
23...Qa5 24.Nxf8 Bxf8 25.Bc4 Qd8 26.Re1 Kb8 27.h4 a5 28.Qf4 Qc7
  +-  (1.66)   Depth: 10/29   00:00:06  1123kN
23...Qa5 24.Nxf8 Bxf8 25.f7 Kb7 26.Qh5 h6 27.Qg6 h5 28.Qxh5
  +-  (1.73)   Depth: 11/29   00:00:11  1966kN
23...Qb6 24.Nxf8 Bxf8 25.Re1 Qd8 26.f7 Kb7 27.Qg3
  +-  (1.72)   Depth: 11/29   00:00:16  2795kN
23...Qb6 24.Nxf8 Bxf8 25.Re1 Qd8 26.Bh3 Kb8 27.Be6 a5 28.Qf5 Bb5
  +-  (1.65)   Depth: 11/29   00:00:19  3403kN
23...Qb6 24.Bh3 Kb8 25.Nxf8 Bxf8 26.Re1 Qb7 27.Qh5 Bxh3 28.Re8+ Bc8 29.Rxf8 h6
  +-  (1.81)   Depth: 12/30   00:00:50  8929kN
23...Qa5 24.Nxf8 Bxf8 25.f7 Kb7 26.Qh5 h6 27.Qg6
  +-  (1.80)   Depth: 12/30   00:00:54  9619kN
23...Qa5 24.f7 Rh8 25.Nxc5 Bb5 26.Bxb5 Qxa2+ 27.Kxa2 dxc5 28.Bxa6+ Kc7
  +-  (1.80)   Depth: 12/37   00:01:08  12133kN

(, eim 22.10.2003)


Uri



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