Given one set of pentominoes:

Use five (different) pentominoes to build a bridge with a rectangular outer edge.
Magnify this bridge with factor 2.

To build this similar bridge use a set of pentominoes and two sets of tetrominoes.

Extra rule: the same tetrominoes may not touch each other, not even with just a corner
The pentominoes and tetrominoes must lie in a single plane.
Try to maximise the enclosed area.

This Excel file will make searching for a solution a bit easier.
To download it click with the right mouse button and choose �Save target as ...� to save this Excel file on your hard disk or diskette.

An excellent help in searching for solutions is the program �FlatPoly2�. You can download it from the homepage of Aad van de Wetering, Driebruggen.

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