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Subject: Re: Human versus Computer openings

Author: Robert Hyatt

Date: 12:52:28 02/20/01

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On February 19, 2001 at 09:50:42, Sune Larsson wrote:

>I think a good try for a human vs a computer is the "Chepukaitis setup".
>Chepukaitis is a 65 years old, very original and talented master.
>
>As black you open with d6 and g6 - after that put pawns on a6,b6,e6,h6.
>The bishops are placed on b7 and g7 - the knights on d7 and e7.
>
>As a little example this is a rated game vs CM8K personality GM Fischer.
>40 moves in 40 minutes PIII 800.

David Levy used to play this against computers.  It worked great until he
ran into a later version of Deep Thought where he got smashed by playing
so passively.

I think he lost 4-0 if I recall.



>
>
>(3) Fischer,R (2861) - Larsson,S (2694) [B06]
>Chessmaster 8000 Rated Game 40/40 Kil, 2001
>
>(This is the latest game, played just a couple of days ago. Facing Fischer this
>time ;) playing GM:s the alpahabet down...)
>
>1.e4 g6 2.d4 d6
>
>(I have no opening preparation and don't want to play special "anti-computer"
>openings, so the following idea popped up OTB. To the memory (oh well, he's
>still alive and kicking!) of Master Chepukaitis.)
>
>3.Nf3 Bg7 4.c3 a6 5.Bd3 b6N (5.-Nbd7) 6.0-0 e6 7.Bf4 h6 8.e5 Bb7 9.Nbd2 d5
>10.Nb3 Nd7 11.Qc2 Ne7 12.Be3 0-0 13.Qd2 Kh7 14.Rae1 Nf5 15.Bf4 c5 16.dxc5 bxc5
>17.c4
>
>(Of course. I was very pleased with the opening, but now calculation starts.)
>
>17...dxc4 18.Bxc4 Bxf3 19.gxf3 Nb6
>
>(This was the only varaiation I looked at. Playing 3 times faster than normal
>tournament level tends to shrink the "tree". Simply missed the strength of
>19.-Qh4, but  the plan performed is also good.)
>[19...Qh4 20.Qxd7 Qxf4 21.Re4 Qg5+ 22.Rg4 Qh5 23.Re1 Rad8 24.Qc6 Nd4 25.Nxd4
>cxd4 26.Qe4 d3 27.Bxd3 Rd5 -1.14 Fritz]
>
>20.Qxd8 Rfxd8 21.Re4 Nd4 22.Nxd4 cxd4 23.Bb3 Rac8
>
>(The clock is ticking... There were other promising moves)
>
>24.Rd1 Nc4 25.Rexd4 Rxd4 26.Rxd4 Nxe5 27.Kg2 Rc5
>
>(And here a total standstill. Just didn't know how to continue. The move played
>carried some idea of protecting the a6 pawn by a push to a5...(27.-g5) -0.72
>Fritz
>
>28.Be3 Rc7 29.h3 Nd7 30.Rc4 Rxc4 31.Bxc4 Bxb2 32.Bxa6 Ba3 = Fritz
>
>(Still 8 moves to the time control. Knew I had lost the grip and was worried
>about a white king walk to b3...)
>
>33.f4 Kg7 34.Bb5 Nc5 35.Kf3 f5?! zeitnot
>
>(Doing nothing would lose, I thought - but this move gives away a pawn. Slipping
>downhills...)
>
>36.Be8 Ne4 37.Bd4+ Kh7 38.Bf7 Nc5
>
>(Fingers crossed for him to take on c5 and e6...;)
>
>39.Ke2 Ne4 zeitnot (39.-Bb4) 40.Bxe6 Nc5
>
>(First time control and still alive)
>
>41.Bc4 g5 42.fxg5 hxg5 43.f4 Kg6 44.fxg5 Kxg5 45.Kf3 Ne4 46.Bd5 Nd6 47.Be3+ Kh4
>48.Kg2 Ne4 49.Be6 Nd6 50.Bd7
>
>(Somewhere around here I got the illusion that the next time control was after
>60 moves... Spent a lot of time...)
>
>50...Nc4 51.Bf2+ Kg5 52.h4+
>
>(Trying to calculate the effects of 52.-Kg4. I saw some mates after Bb5 or that
>the king would be driven away from the h-pawn. So finally...)
>
>52...Kg6 (52.-Kg4!?) 53.Bd4 Nd6 54.Bc6 Ne4 55.Be8+ Kh6 56.Be3+ Kg7 57.h5 Nd6
>58.h6+ Kh7
>
>(Here a flash of insight made me realize that the next time control was after 80
>moves...;)
>
>59.Bd7 Kg6 (Time)
>
>Another hard loss. Maybe there still are chances but these endings are very hard
>to play. Need more time so maybe a change to the new FIDE time controls would be
>good. 1-0
>
>Sune



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