Message #1735

From: Melinda Green <>
Subject: Re: [MC4D] puzzle avalanche continues
Date: Sun, 22 May 2011 03:46:03 -0700

On 5/21/2011 10:46 PM, Roice Nelson wrote:
> […]
> I would like to name your 9-color edge turning {4,4} to be the
> "Harlequin" tiling.
> Done, and uploaded
> <> :)

And now it is solved
<>! It is
simple enough to solve by intuition yet hard enough to require actual
thinking. I was hoping there was going to be something tricksy about
this one but it turns out to be very well behaved. The interesting
thing is that the only pieces that can travel are the petal-shaped ones.
They come in 2 orientations such that the vertical petals can only move
horizontally and the horizontal petals only vertically. In that regard
it reminds me a little of the 15 puzzle and seems to have roughly the
same difficulty.

Thanks Roice!