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Subject: Interesting position solved only by Junior5 and Exchess2.45!

Author: Lawrence S. Tamarkin

Date: 22:19:29 11/12/98


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 second (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:)

Also, I found by perusing the contents of the Rebel Million Base, that the
actual game continued this way; 16.Nxe6 fxe6 17.Bxd7 Ke7 18.Qg4 (Sagalchick
decides against 18.Bxc5!?)...Bxe3 19.Qg7+ Kd6 20.Rad1+ Bd4 21.Rd2 Kc7 22.Be8!
Ke8! 23.Qxh8 Bc6 24.Qxh7 Bxe8, and Black later drew.  All in all, a really
facinating game with plenty of complications.  And only in Million Base, as far
as I know.

mrslug - the ikompetent chess software addict!



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