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Subject: Re: Rebel - van der Wiel, 0-1

Author: Ed Schröder

Date: 00:16:49 01/05/01

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On January 04, 2001 at 19:19:12, Graham Laight wrote:

>On January 04, 2001 at 17:43:30, Ed Schröder wrote:
>
>>On January 04, 2001 at 12:20:41, Ulrich Tuerke wrote:
>>
>>>On January 04, 2001 at 12:09:25, Enrique Irazoqui wrote:
>>>
>>>>[Event "?"]
>>>>[Site "?"]
>>>>[Date "2001.01.04"]
>>>>[Round "?"]
>>>>[White "Rebel Century 3"]
>>>>[Black "van der Wiel, John"]
>>>>[Result "0-1"]
>>>>[ECO "B15"]
>>>>[BlackElo "2531"]
>>>>[PlyCount "118"]
>>>>[EventDate "2001.01.02"]
>>>>[SourceDate "2001.01.04"]
>>>>
>>>>1. e4 c6 2. d4 d5 3. Nc3 a6 4. Be2 b5 5. a3 e6 6. Nf3 Nf6 7. e5 Nfd7 8. Bg5 Be7
>>>>9. Bxe7 Qxe7 10. b4 a5 11. Na2 axb4 12. axb4 O-O 13. Bd3 f6 14. exf6 gxf6 15.
>>>>O-O Rf7 16. Re1 Nf8 17. Nh4 Qd8 18. Re3 Rg7 19. Rg3 Qe7 20. Qf3 Rxg3 21. Qxg3+
>>>>Qg7 22. Qd6 Qd7 23. Qf4 Qg7 24. Nf3 Bd7 25. Qc7 Be8 26. Qd8 Bg6 27. h3 Qf7 28.
>>>>Bxg6 hxg6 29. Nh2 Kg7 30. Ng4 Nfd7 31. Qc7 e5 32. Qb7 Ra3 33. dxe5 fxe5 34.
>>>>Nxe5 Nxe5 35. Qxb8 Qf6 36. Re1 Rxa2 37. Qxe5 Qxe5 38. Rxe5 Rxc2 39. Re1 Kf6 40.
>>>>Kf1 d4 41. Re8 Rc4 42. Rc8 Ke7 43. Ke2 Kd6 44. Rd8+ Kc7 45. Rg8 Rxb4 46. Kd3 c5
>>>>47. Rg7+ Kb6 48. Rxg6+ Ka5 49. h4 Rb3+ 50. Ke4 d3 51. Rd6 c4 52. g4 Rb2 53. g5
>>>>Re2+ 54. Kf3 Re8 55. Rd4 b4 56. Rxc4 b3 57. Rc1 b2 58. Rd1 Kb4 59. Kf4 Kc3 0-1
>>>>
>>>>Enrique
>>>
>>>A convincing demonstration that anti-computerchess played by a GM is still too
>>>much for todays programs.
>>>This opponent is indeed a very brave choice of the Rebel team. I think that
>>>there are many opponents with higher ELO, but easier to play for Rebel, - my
>>>deep respects to Ed for playing John van der Wiel.
>>>And btw a very interesting game !
>>>Uli
>>
>>Thank Uli for the encouraging words. John v/d Wiel after the game said he
>>wasn't impressed by Rebel's play in game 1 and 2 but in game-3 he had a
>>very hard time and was impressed by Rebel's pressure. He also said that
>>39.Re1 was Rebel's only mistake (39.Re6! Kf7 40.Rd6! is probably a draw)
>>and thereafter white was lost.
>>
>>He also mentioned that during the middlegame white maybe could have played
>>Re1 sacrificing the kningt on a2 for a strong attack. I forgot about the
>>move number. I would be interested to know if anyone noticed this.
>>
>>2-1 for GM John v/d Wiel still 3 games to go starting next tuesday.
>>
>>During the 3 games so far I noticed the following pattern by John:
>>
>>. force the game only into strategic lines even if there (probably) is a
>>better move.
>>
>>What can one do?
>>
>>Ed
>
>If JVDW is "playing the player", then play him at his own game.
>
>There is an option which I'm 90% sure will win the next game (but has a 10%
>chance of making you look silly).
>
>Bob once mentioned that, long ago, due to some sort of error, the clocks didn't
>work properly on Cray Blitz. The computer played its moves much too quickly.
>What happened was that, while the computer undoubtedly played marginally worse,
>the human opponents played a lot worse, and did far more badly than the form
>guide would have predicted.
>
>If I were in your shoes, I would take 2 measures to try to knock your opponent
>out of his smooth, confident, flowing state of mind:
>
>1. Set Rebel's clock to move after a fixed length of time (preferably 30
>seconds, but certainly no more than 40 seconds). A high proportion of the moves
>it will select will be the same as the 3 minute selection would have been anyway
>- and there's no point in worrying about tactical mistakes against a human! The
>effect of this will be to throttle off nearly half JVDW's thinking time. The
>impact on the human's standard of play will be far more devastating than it will
>be on the computer's.

This is a good hint. In game-1 I made a typo setting the playing level.
Instead of using 00:02:45 as average time I typed 00:01:45. As a result
Rebel played much too fast. The positive side effect was v/d Wiel had
less time to think and had big time troubles.

From the GM challenge games I remember I tried a system that focus on
the time control of the opponent. I will try this in game-4 and see if
it is successful.

Thanks.

Ed


>2. Set Rebel's playing style to the safest, blandest, most pedestrian level
>possible. This will have 2 benefits - minimising the risk of poor positioning,
>and lulling the opponent into a false sense of security. Go for one of
>humanity's greatest weaknesses - complacency! You're going to need a mistake
>from JVDW to beat him anyway - why not maximise your chances of getting this
>mistake.
>
>In conclusion, while at first glance this looks like the blackest day for
>computers since DB's game 6 against GK in the first (1996) match, if you're
>willing to "play the player" rather than "play great chess", there might still
>be time to throw your opponent off his stride...
>
>-g



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