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This box has four compartments that do exactly that. After working out how to construct the puzzle box, the next challenge was to design the stitching, based on lichens, so it connected in both the triangular and the square forms.
Henry Dudeney (1857-1930) was a Victorian mathematician who set the Haberdasher’s Puzzle, or Dudeney’s Dissection. The challenge was to cut an equilateral triangle into four and reassemble the pieces to make a square.
