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Subject: Re: Interesting position solved only by Junior5 and ExChess 2.45!

Author: Lawrence S. Tamarkin

Date: 23:54:55 11/12/98

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On November 13, 1998 at 01:33:00, Lawrence S. Tamarkin wrote:


>Sagalchik,G - Zamora,J []
>USAT East,Parsippany, 1995
>
>1.d4 Nf6 2.c4 c6 3.Nc3 d5 4.e3 e6 5.Nf3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 Bb7
>9.0-0 b4 10.Ne4 c5 11.Nxf6+ gxf6 12.e4 cxd4 13.Nxd4 Bc5 14.Be3 Qb6 15.Bb5 Rd8
>16.Nxe6 fxe6 17.Bxd7+ Ke7 18.Qg4 Bxe3 19.Qg7+ Kd6 20.Rad1+ Bd4 21.Rd2 Kc7
>22.Be8+ Kb8 23.Qxh8 Bc6 24.Qxh7 Bxe8 25.Rc1 e5 26.h4 Qb7 27.Qf5 Qf7 28.h5 Bd7
>29.Qf3 Rg8 30.Rxd4 exd4 31.Qf4+ Ka8 32.Rc7 Qxh5 33.Rxd7 Qd1+ 34.Kh2 Qh5+ 35.Kg1
>Qd1+ 36.Kh2 Qh5+ 37.Kg1 ½-½

>------------------------------------------------------------------------------->Posted by Lawrence S. Tamarkin on November 13, 1998 at 01:19:29:
>
>
>I found the following interesting positon from the game, Saglchik-Zamora USAT
>East, Parippany 1995, while studying the Chess Assistant program, 'Encyclopedia
>Of Middlegames'. (A really fantastic tutor program).
>
>3rk2r/pb1n1p1p/1q2pp2/1Bb5/1p1NP3/4B3/PP3PPP/R2Q1RK1 w k - 0 1  (16.Nxe6)
>
>
>All engines in Junior were set to 'adopt all hashtables', at the 10 minute
>level, on my Acer, 200MhZ, 32m ram machine, for what it is worth.
>
>1. Junior5 finds 16.Nxe6 after 19 seconds
>2. Fritz5 (16 bit), 16.Qd3 is executed after 25 seconds.
>3. Crafty 15.19, 16.Qd3, after 35 seconds.
>4. Exchess 2.45, 16.Nxe6 after 25 seconds.
>5. Rebel 10, 16.Qd3, after 14 seconds (set at 13 meg Hash tables, 10 minute
>   game.
>6. CM6000, 16.Qd3, almost immeidately! And this from the program that finds
>   Mate in 14 in the Shirov-Krasenkov position!
>
>Incidently, 'Encyclopedia Of Middlegames', gives the variation, 16.Nxe6 fxe6
>17.Bxd7+ Ke7 18.Bxc5 Qxc5 19.Qg4 Qe5(?)20.Qg7+ Kd6 21.Rfd1+ Kc7 22.Be8!, as
>winning.  But Junior5 also found the amazing variation, (after, 16.Nxe6 fxe6
>17.Bxd7+ Ke7 18.Bxc5 Qxc5 19.Qg4 Kxd7 20.Qg7+(?) Qe7! 21.Rfd1 Bd5!, and Black is
>alright! - I think:)

Upon even further inspection, White does appear to win after all, with 20.Rad1+
Ke8 21.Qg7 Rf8 22.Rxd8+ Kxd8 23.Qb7 Qd4 24.Qxh7, and Whites position is a
winning one.  Further valadiction for the Chess Assistant product!

mrslug - the inkompetent chess software addict!

rest sniped...



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