Author: John Merlino
Date: 15:42:46 05/19/04
Go up one level in this thread
On May 19, 2004 at 17:50:37, ERIQ wrote:
>I tryed this positon on my sony tj25 palm using both chessgenius2.0 and
>chesstiger 5.2 and chess tiger found the answer in 26sec. I ran the test
>position three times just to see if I was mistaken but no in-fact ct found the
>solution after hitting 9ply as did CG.
>
>CT saw 1.Rb8 Be5 2.Rd8 Bc7 3.Rf8 anymove then 4.Ne7.( this is what I found as
>well)
>
>Chessgenius finds a slightly different way to win for white in 1.Rb8 Be5 2.Rd8
>Bc6 3.Nf6+ genius finds this in 00:05/sec (205347 positions @41069/sec). First
>the website states that this is a mate in six, but also look at the bench marks
>of faster palms none of the solve this problem this fast! whats wrong with this
>picture ?? maybe I'm missing something.
>
>[Event "PDA test pos"]
>[Site "Mat 6"]
>[Result "*"]
>[SetUp "1"]
>[FEN "R5Nk/7p/4pbpP/n1p4n/2p1b3/K1p3pq/8/8 w - - 0 1"]
>
>1. Rb8 *
Not sure what the problem is that you are seeing, but as far as I can tell this
is a Mate in 6. Here is best play from the initial position:
1.Rb8 Be5
2.Rc8 Bb7
3.Rd8 Nc6
4.Re8 Ng7 {or 4...Bg7 5.Nf6+ {or 5.Ne7+} Bf8 6.Rxf8#}
5.Rf8 ANY
6.Nf6# or Nh6# or Ne7# {depending on what Black played on the 5th move}
jm
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