38. Split a pentomino-hedgehog

Start with the shape of a hedgehog.

Fill the shape with a set of pentominoes.
Cut a solution in two parts, without cutting up any of the pentominoes. Maximize the length of the cut.
In the solution below a cut of length 19 is drawn.


An excellent aid for searching solutions is the program “FlatPoly2”. You can download it from the homepage from Aad van de Wetering, Driebruggen, the Netherlands.