a Rubik cube contains 27 cubies (one of which is hard to see) On Wed, Aug 28, 2013 at 9:30 PM, Mike Stay <metaweta@gmail.com> wrote:
Right... What's a cubie?
On Wed, Aug 28, 2013 at 6:19 PM, David Wilson <davidwwilson@comcast.net> wrote:
Consider a 3-D tile made of 5 cubies arranged like a P-pentomino, 1 cubie thick.
You pack these into a 3x3 cube (together they fill all but 2 cubies).
Suppose one of the unpacked cubies is the center cubie.
Can the remaining unpacked cubie be at a vertex of the 3x3? An edge? A face center?
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