This is more a set of Puzzles than a game. Together with my good friend Johan Sieders I tried to find

some extentions of the well-known 7-piece TANGRAM.

How this worked out has been published in the magazine 'Natuurwetenschap en Techniek' in a serie of articles. The english version is yet published in the magazine  CFF of the Dutch Cube Club.

One example in transparent Perspex was especially made for me.