Design by Oskar van Deventer

The following puzzle is designed by Oskar van Deventer. The puzzle is made out of twelve plates with sizes of 1x3x9 units.

If you are going to make this puzzle, a drill is needed. As you can see in the diagram below, several pieces looks like a square ring. These pieces are made by drilling a small hole in the middle of the piece and than cutting the middle part out of the piece by using a jigsaw. For the rest it is easy to make this puzzle by yourself.

 

A Variation to the puzzle above is shown on the picture below. This puzzle can be constructed by using fourteen pieces. You must take for this six A-pieces, six B-pieces, one C-piece and one D-piece.