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Subject: Re: Chess Tiger - Deep Sjeng. Deep Sjeng ist lost after only 24 moves

Author: Vasik Rajlich

Date: 02:28:11 10/25/04

Go up one level in this thread


On October 25, 2004 at 03:37:59, martin fierz wrote:

>On October 24, 2004 at 18:44:59, Vasik Rajlich wrote:
>
>>On October 24, 2004 at 16:11:29, Gian-Carlo Pascutto wrote:
>>
>>>On October 23, 2004 at 12:33:07, Vasik Rajlich wrote:
>>>
>>>>On October 23, 2004 at 12:12:25, Dan Andersson wrote:
>>>>
>>>>> According to Ed it's not a Nommen book. I have fond memories of meeting 9. ...
>>>>>Bd7 Especially when I was up against a wunderkind. He was under the impression
>>>>>that he was good in a tactical skirmish and that I was a positional player :)
>>>>>
>>>>>MvH Dan Andersson
>>>>
>>>>I play this move 9. .. Bd7 myself - it seems ok. Sjeng played it horribly though
>>>>- 12. .. Qa5 is suspicious and then 15. .. Nc4 is just a blunder no human would
>>>>make - not even blindfold while casually browsing CCC :) ...
>>>
>>>Please suggest a better move than Nc4. (And note that Qa5 was book)
>>>
>>>Both engines agreed black is DEAD LOST after the opening.
>>>
>>>--
>>>GCP
>>
>>Well - maybe 15. .. h5. White can win a pawn with 16. Nd5 Qxd2 17. Nxe7+ but
>>that should be playable.
>>
>>You can also play 15. .. Rxc3, those endings are often ok.
>>
>>Another move is 15. .. b5.
>>
>>Martin's advice is quite sound though - the Dragon is very hard for computers to
>>play right. Black often needs to sacrifice material.
>>
>>Vas
>
>i agree, specially in connection with the move 15...Rxc3. in the dragon, black
>very often can take on c3 with no or little apparent compensation, and still
>hang on. but try explaining that to your computer program...
>
>cheers
>  martin

Yeah, actually sometimes I have trouble believing these sacrifices myself :) For
example this game:

[Event "Hastings Premier 76th"]
[Site "Hastings"]
[Date "2000.12.31"]
[Round "3"]
[White "Beshukov, Sergei"]
[Black "Turner, Matthew"]
[Result "0-1"]
[ECO "B79"]
[WhiteElo "2428"]
[BlackElo "2491"]
[PlyCount "106"]
[EventDate "2000.12.29"]
[Source "ChessBase"]
[SourceDate "2001.03.20"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Bg7 5. Nc3 Nc6 6. Be3 Nf6 7. Bc4 O-O 8.
Bb3 Qa5 9. f3 d6 10. Qd2 Bd7 11. O-O-O Rfc8 12. Kb1 Ne5 13. g4

[D] r1r3k1/pp1bppbp/3p1np1/q3n3/3NP1P1/1BN1BP2/PPPQ3P/1K1R3R b - g3 0 13

Here black decided to sacrifice already!

13. .. Rxc3 !?!? 14. Qxc3
Qxc3 15. bxc3 Rc8 16. Kb2 b5 17. h3 a5 18. a3 Ne8 19. Rhf1 Nc7 20. f4 Nc4+ 21.
Bxc4 bxc4 22. Rb1 Na6 23. Ne2 Bc6 24. Ng3 Nc7 25. Bd4 e5 26. fxe5 dxe5 27. Bb6
Ne6 28. Bxa5 Bh6 29. h4 Bf4 30. Ne2 Bxe4 31. Nxf4 exf4 32. Bb4 Bg2 33. Rf2 f3
34. Rd1 g5 35. h5 h6 36. Be7 f5 37. gxf5 Ng7 38. f6 Nxh5 39. Rd7 g4 40. f7+
Kxf7 41. Bh4+ Ke6 42. Rh7 Nf6 43. Rxh6 Rf8 44. Rd2 Kf5 45. Bf2 Ne4 46. Rd5+ Kf4
47. Rd4 Ke5 48. Be3 g3 49. Rd7 f2 50. Rb7 Nf6 51. Bd4+ Kf5 52. Rb5+ Nd5 53. Bc5
Rf7 0-1



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