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Subject: Re: Tough solution

Author: Shane Booth

Date: 15:08:49 01/15/98

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[FEN "8/7p/6pP/k4pP1/b1p1pP2/KpPpP3/1P1P4/7Q w - - 0 1"]

On January 15, 1998 at 13:28:13, Robert Hyatt wrote:
>I should add that while CB would obviously solve this and win, if it
>were
>playing, there is a way where it might not be able to win.  Since it is
>going to have to shuffle pieces for > 40 moves so that the 50-move rule
>would kick it in the right direction, it is possible that by the time 50
>moves approaches, it can't find a way to play Qd1 without passing thru
>another position for the 3rd time and repeating.  I'd hope there are
>enough
>paths, but whether they are is only one issue.  The other is whether it
>would
>leave itself a path where Qd1 works, because the king has to be over on
>the
>q-side or it doesn't work.
>
>I'd call this 50-50...

Sorry, in this particular case the 50 move rule won't get it
for you.  As Vincent originally wrote, 1. Qd1! is zugzwang.
If white fails to play Qd1 straight away and shuffles it around
black simply oscillates the bishop between b5, c6, d7.  As soon
as White brings the queen to d1, Black plays Ba4 and prevents
the sac.

So it's not so obvious that CB will solve this without setting
the 50-move counter close to 50.

--
Shane Booth



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