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Subject: Re: Mate in 21 !! A challenge for your programs in 2010 !

Author: Uri Blass

Date: 10:54:54 04/17/03

Go up one level in this thread


On April 17, 2003 at 13:02:01, Drexel,Michael wrote:

>[D] 8/8/8/8/8/3Q4/pp1KPPP1/k6n w - - 0 1
>
>White to move and mate in 21
>
>A strong human chessplayer should be able to find it easily.
>The solution will follow in the next post.
>
>You might try to find the solution on your own.
>
>Happy solving!
>
>Michael

Yace can find it after learning

I guess that the software of 2010 will find it in less than
1 second thanks to superior algorithms.


New game
[D]8/8/8/8/8/3Q4/pp1KPPP1/k6n w - - 0 1

Analysis by Yace Paderborn:

1.Qb1+ axb1Q
  -+  (-11.31)   Depth: 1   00:00:00
1.Kc3 b1Q
  -+  (-1.55)   Depth: 1   00:00:00
1.Qc3 Nxf2
  +-  (3.55)   Depth: 1   00:00:00
1.Qd4 Kb1 2.Qe4+ Ka1 3.Qe5 Kb1 4.Qf5+ Ka1 5.Qf6 Kb1 6.Qg6+ Ka1 7.Qg7 Kb1 8.Qh7+
Ka1 9.Qh8 Nxf2 10.Kc2 Nd1 11.Kb3 Kb1 12.Qh7+ Ka1 13.Qg7 Kb1 14.Qg6+ Ka1 15.Qf6
Kb1 16.Qf5+ Ka1
  +-  (#21)   Depth: 1   00:00:00
1.Qd4 Kb1 2.Qe4+ Ka1 3.Qe5 Kb1 4.Qf5+ Ka1 5.Qf6 Kb1 6.Qg6+ Ka1 7.Qg7 Kb1 8.Qh7+
Ka1 9.Qh8 Nxf2 10.Kc2 Nd1 11.Kb3 Kb1 12.Qh7+ Ka1 13.Qg7 Kb1 14.Qg6+ Ka1 15.Qf6
Kb1 16.Qf5+ Ka1
  +-  (#21)   Depth: 1   00:00:00
1.Qd4 Kb1 2.Qe4+ Ka1 3.Qe5 Kb1 4.Qf5+ Ka1 5.Qf6 Kb1 6.Qg6+ Ka1 7.Qg7 Kb1 8.Qh7+
Ka1 9.Qh8 Nxf2 10.Kc2 Nd1 11.Kb3 Kb1 12.Qh7+ Ka1 13.Qg7 Kb1 14.Qg6+ Ka1 15.Qf6
Kb1 16.Qf5+ Ka1

Uri



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