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Subject: Re: Mate in 9 positions

Author: Ernst A. Heinz

Date: 16:53:21 01/09/00

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Hi Charlie,

The first two positions seem to be very easy for chess programs.
"DarkThought" solves them instantly. The third position is much
harder (at least for "DarkThought").

> [d] r1b2r1k/1pq2ppp/p2b1n1N/8/2B1p3/1P3Q2/PBP2PPP/R4R1K w - -

1. Qxf6!
(correct move after 0 sec, correct mate announcement after 19:43 min)

> [D] r1bq1k1r/1p1pn1bp/3Q2p1/p5p1/2B5/4R3/PP3PPP/R5K1 w - -

1. Rae1!
(correct move after 0 sec, correct mate announcement after 3:59 min)

> [D] 2r3k1/1b3pq1/2r1p1p1/1p1pP1Q1/1b1B4/pN1BP1P1/2P3KR/7R w - -

1. Na1
(correct ??? move after 8:20, no mate announcement yet ...)

Cheers,

=Ernst=

P.S.
WWW pages of "DarkThought" at URL
http://supertech.lcs.mit.edu/~heinz/dt/



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