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Subject: Re: how much time does your program need to see mate in 200?

Author: Roy Eassa

Date: 07:48:06 09/24/03

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On September 24, 2003 at 10:44:26, Roy Eassa wrote:

>[D]6n1/p1BN3b/p1p3np/p1p3pq/6kr/K1P2r1p/2PPQ3/8 w - - 0 1
>
>I think I see the solution: White plays:
>
>1.Qe6+ Rf5 2.Bh2 gaining the first tempo.
>
>White repeatedly play the sequence:
>
>Qe3+ Kg2; Qg1+ Kf3; Qf1+ Kg4; Qe2+ Rf3; Qe6+ Rf5
>


Sorry, I forgot to say that this sequence follows Black's moving of his King to
f3, which is his only choice (to avoid quick mate) other than to push his Q-side
pawns, which eventually get all eaten or blocked.  So the sequence should really
be:

...Kf3; Qe3+ Kg2; Qg1+ Kf3; Qf1+ Kg4; Qe2+ Rf3; Qe6+ Rf5


>gaining a tempo each time.  White uses all those tempos (tempi?) to eat all
>Black's a-file pawns then march his (White's) King over to d1, after which he
>has a simple mate.  I haven't bother to work out the precise details (whether
>White must eat the pawns on specific squares, etc.), but I'm pretty sure that's
>the basic idea.



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