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Balls or spheres can be piled up in such a way a pyramid will be formed with a triangular base. You need twenty spheres for a pyramid of four balls height. When you glue some spheres together with a good wood glue you can get a difficult puzzle.

You need several wooden balls for making this puzzle. These balls can be bought in a hobby- or wood shop. When you glue the balls together you need a very good glue. It is better to take a glue with a long dry time than to make this puzzle too fast.

The spheres can be glued together like the diagram given below, but you can also make your own puzzle. To keep the balls fixed while drying, you can use other balls as a mould. When all pieces are finished, you can try to put the pieces together to form the pyramid, if you can't solve this problem, look at the solution.


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