On 16/01/2015 20:12, Eriban wrote:
> I think it's a beautiful puzzle. Hopefully you'll agree. The animation can be
> found here:

Thanks for that. It dredged up memories of the couple I had at school. I 
had a cube and a sphere and there was a barrel shape as well. They 
weren't quite as difficult as that one. :-)

-- 

Regards
     Stephen

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