The puzzle is made out of six different pieces which are shown below. The precise dimensions of the puzzle can be found in the diagram below. The pieces A, B and C are duplicated three times. The pieces D, E and F are made one. Piece C is almost exactly the same as piece B, put in piece C one extra notch is made. This notch can be made best if the puzzle is half assembled. First three B-pieces must be put together as a base of the puzzle. three C pieces are connected perpendicular on the base. After that three A-pieces form three sides of the puzzle. Now it becomes clear how the small notch in the C-pieces must be filed to complete the puzzle. 

Design Graph

 

Two units are in concern in this puzzle: x and y. If you buy a piece of wood, remind that the proportion between x : y approximately 2 : 5 is.

For an explanation about the use of this design graph click here.