Here is a Moi model of the foxagon puzzle.
Extrusion along the z axis is just to provide top and bottom faces of different colors.

The foxagon pdf was opened in Moi.
http://userpages.monmouth.com/~colonel/

Instructions:
Fit the pieces together to form a regular
hexagon so that no adjacent triangles
appear with the same color.

- Brian

Apparently this is not a polyomino.

This Colonel is an Headaches maker! :)

<< A polyomino is a plane geometric figure formed by joining one or more equal squares edge to edge.

Sure : A polyomino is a plane geometric figure formed by joining one or more equal squares edge to edge.

Hi Bemfarmer,

<<Fit the pieces together to form a regular
hexagon so that no adjacent triangles
appear with the same color.>>

On both sides?

Both sides? Unknown.
I have not tried all the combinations yet :-)
So far, have only one success, with 4 of the 8 possible faces, one side only, no adjacent matches.
- Brian