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Subject: Re: Mate in ...?

Author: James T. Walker

Date: 15:02:20 02/13/00

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On February 12, 2000 at 10:18:44, leonid wrote:

>Hello!
>
>Please give your position that contain mate between 4 and 8 moves. Would like to
>know the speed at which usually logic solve mates. I did this four years ago,
>but then I was alone. Now data could be more diversified and useful for me as
>for somebody else.
>
>Until now positions presented here were almost all the time beyond 9 moves (18
>plies). This make solution too long to find.
>
>Please indicate your hardware and your game.
>
>I will give,  for start, one very simple position that contain mate in 6 moves.
>White to go.
>
>/1q2kr2/rB2bbp1/3p1n2/1NpP2BN/P4P1p/1P2Q3/6PP/R3K2R/ White to go.
>
>Thanks for your next position!
>Leonid.

This is from George Koltanowski's book "TV Chess".  It is a mate in 10 with 4
underpromotions to a Knight.  It is one of my favorites.  I was surprised to
find in the late 80's that the Fidelity Champion Sensory Challenger would solve
this problem in about 42 seconds.  Todays programs will solve this in less than
1 second.

[D]7K/P1p1p1p1/2P1P1Pk/6pP/3p2P1/1P6/3P4/8 w - - 0 1

Jim Walker



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