Similar Bridges

Given one set of pentominoes:

Use six (different) pentominoes to build a bridge with a rectangular outer edge.
Magnify this bridge with factor 2.
To build this similar bridge use four copies of the same six pentominoes that you used to build the small bridge.
The pentominoes 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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