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Subject: Re: Cheap thrills in computer chess

Author: Larry S. Tamarkin

Date: 22:06:39 04/20/98

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I used to have the Chess Machine on my PC.  It invited me to play the
following line: 1.c4 e5 2.Nc3 Nf6 3.g3 c6 4.Bg2 d5 5.cxd5 cxd5 6.Qb3 Nc6
7.Nxd5 Nd4 8.Nxf6+ Qxf6 9.Qd1 Bf5 10.d3 Rc8 11.Rb1 Nc2+ 12.Kf1, and I
would often survive Black's initiative, and later win with the extra
pawn.  For a long time I thought that this was, perhaps, not that good a
line for Black.

In the Opening books of all programs that I know of today, the line is
not played at all, and is just an obscure side-line of the theory.

Now I think Black's compensation is just great for Black, but perhaps it
was not that good for the chess machine.  All the games were played at 5
minute level, and I'm sorry to say that I didn't save them.  Anyway, I
think it is inevitable that some industrius chess author (like Eric
Schiller, or Lev Alburt, perhaps), will write a book entitled, 'Chess
traps for the tournament computer' :) I'd love to see other people's
experiouces with opening lines that their programs did not handle well.

mrslug - the inkompetent chess software addict!


Below are two example games from the Fritz5 database, how White can go
right and wrong in this line:

(104389) Slavov,D (2265) - Arnaudov,P (2255) [A23]
BLG-ch (6), 1991
1.c4 e5 2.Nc3 Nf6 3.g3 c6 4.Bg2 d5 5.cxd5 cxd5 6.Qb3 Nc6 7.Nxd5 Nd4
8.Nxf6+ Qxf6 9.Qd3 Be7 10.e3 Nc6 11.Ne2 0–0 12.0–0 Nb4 13.Qb1 Bf5 14.Be4
Bh3 15.Re1 Qe6 16.a3 f5 17.Bxb7 Rab8 18.Bh1 Nd5 19.Qa2 e4 20.d3 Bf6
21.dxe4 fxe4 22.Nf4 Nxf4 23.exf4 Qxa2 24.Rxa2 Be6 25.Ra1 Bf5 26.Bxe4
Rfe8 27.f3 Bd4+ 28.Kg2 Bxb2 29.Rb1 Bxc1 30.Rxb8 Rxb8 31.Rxc1 Rb2+ 32.Kg1
Bh3 33.Rc2 Rb1+ 34.Kf2 Ra1 35.Rc3 h5 36.f5 a5 37.Ke3 Kf8 38.Kf4 Ke7
39.Kg5 Rh1 40.Rc5 a4 41.Ra5 Rxh2 42.Rxa4 Bf1 43.Ra7+ Kf8 44.f6 gxf6+
45.Kxf6 Ke8 46.Bf5 Kd8 47.Rd7+ Ke8 48.Re7+ Kd8 49.Rd7+ Ke8 50.Rd1 1–0


(34588) Baker,C (2255) - Birnboim,N (2435) [A23]
London Peace, 1987
1.c4 e5 2.g3 Nf6 3.Bg2 c6 4.Nc3 d5 5.cxd5 cxd5 6.Qb3 Nc6 7.Nxd5 Nd4
8.Nxf6+ Qxf6 9.Qd1 Bf5 10.d3 Rc8 11.Kf1 Be7 12.Bxb7 Rc7 13.Bd5 0–0
14.Kg2 Rd8 15.e4 Rxd5 16.exd5 Qd6 17.f3 Rc2+ 18.Kf1 Qa6 19.Bd2 Qxd3+
20.Ke1 Bb4 21.Bxb4 Qe3+ 22.Ne2 Nxf3+ 0–1




On April 20, 1998 at 22:19:05, Joe McCarron wrote:

>I have read posts from people who say that learning to play chess
>against a computer by taking cheap shots is not going to improve your
>chess strength blah blah blah.  If thats your view you may be disgusted
>by his request.  I want to know what the best ways to beat some of the
>older programs are.  I realize there is no set way to beat the best
>programs now but what about the older ones?  What are the latest and
>strongest programs that still fall for some traps? how many fall pray to
>the stonewall attack?  Could someone list these programs and which
>really botch it so bad that a patzer like myself could win?
>What about chessmaster 2000?  how strong is that program on a 486 or
>even a p2 or k6? anyone have any idea?
>
>I really hope this post gets some responses because I really want to
>play a program *at full strength* and win.   I hven't played any of the
>older programs besides CM2000 what are some of the traps these others
>fall into?
>
>I noticed that gnu chess(don't know what version) on my mac sometimes
>plays a terrible version of the scotch with an early ...Qh4.  Allowing
>me to win.  Any other finds like this?
>
>thanks
>Joe



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