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Subject: Re: MATE IN 10 - Unsolved problem from 1986 CCR

Author: Michael Diosi

Date: 08:26:04 02/24/03

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On February 24, 2003 at 10:36:57, John Wentworth2 wrote:

>Below is a chess problem from the 1986 fall/winter edition of Computer Chess
>Reports.
>
>The dedicated units of the time(outlined below) were unable to solve it. I am
>sure todays programs could find it quickly.
>
>Mephisto "S"
>Avant-Garde
>Expert 6.0
>Mephisto III
>Forte
>Quattro 4.0
>Turbostar 540+
>Par Excellence/Avant-Garde 2100
>Excellence 4.0
>
>The article also mentioned they gave the problem to Garry Kasparov but it
>doesn't say if he solved it.
>
>White to move, Mate in 10
>
>8/8/4k3/2K1N1B1/5Pp1/8/2B2P1p/6n1 w
>
>
>SOLUTION:
>
>1. Ba4 Kf5 2.Bd7+ Ke4 3.Be8 Kf5 4.Bg6+ Ke6 5.Bh5 Kf5 6.Bg4+ Ke4 7.Bd1 Kf5 8.Bc2+ Ke6 9.f5+ Ke5 10.f4 mate

Solution by Chest
CHEST Version 3.19+, 20-Oct-2002
Options = -M64 -0 -5LSUr
Input file: STDIN
Reading job:
W:  Kc5 Lc2 Lg5 Se5 Bf2 Bf4 (6)
S:  Ke6 Sg1 Bg4 Bh2 (4)
FEN: 8/8/4k3/2K1N1B1/5Pp1/8/2B2P1p/6n1 w - -
analysing (mate in 10 moves):
Solution (in 10 moves):
	c2a4
Time (virt) = 1311.180 sec (ca. 21.9 min)

c2a4  e6f5  a4d7  f5e4  d7e8  e4f5  e8g6  f5e6  g6h5  e6f5  h5g4  f5e4  g4d1
e4f5  d1c2  f5e6  f4f5  e6e5  f2f4
									       <snip>

Alybadix might be faster here (maybe)...

Michael



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