A math-magic article I wrote for the German magazine Zeit Wissen: with the 13 triangular and square pieces (fig. 1) it is possible to form two large squares shown in fig. 2. Though the second large square has an extra piece the dimensions of the squares seem to be the same! Can you explain why this is possible?
Here’s a wooden version of the puzzle I designed in the late 1990s. Each set of pieces is made in a different color, giving the puzzle a clean, elegant look while making its deceptive geometry even more striking.
I am looking for a game manufacturer able to produce and distribute this incredible puzzle. You can contact me through my website.
☞ Further reading: explore the complete Vanishing Piece Puzzle project on my Behance profile.