The 3 Chain Ring puzzle Designer Michael Toulouzas Craftsman Michael Toulouzas Category Interlock No of pieces Six Wood used Zebrawood Well this is a known puzzle as far as the appearance concerns.BUT...not exactly because the chain rings are not on their square but on the diagonal!!!! Very hard puzzle with one solution and all pieces dissimilar, although i have another version(3 chain ring no2) with all similar pieces.See more pics of the 3 chain ring.or Back to puzzle index.