Re: Coin puzzle (spoiler)

[Walt Mankowski <waltman@pobox.com>]

On Wed, May 08, 2002 at 11:09:02AM -0400, Bill Jonas wrote:
> On Wed, May 08, 2002 at 10:17:49AM -0400, Eric Roode wrote:
> > Kudos to Mark. :-)
> 
> Maybe I'm missing something, but I don't see how this helps since the
> coin pattern can be rotated while you're making your moves...

He's taking advantage of the symmetries in the arrangements of the
coins; e.g. a cross is still a cross whether it's heads or tails in
the north position.  Also, keep in mind that you win whether you can
flip everything to all-heads or all-tails.

Walt

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