A fan of example cards for the Grimm's puzzle game Square. Start with the flat, two-dimensional examples and then move on to the three-dimensional figures, which take a little more puzzling.

• 39 examples on 40 pages
• Size: 8 x 12 cm
• Material: FSC-certified paper
• Puzzle game Square sold separately
• Brand: Grimm's

Grimm's makes open-ended toys from solid wood in Germany, finished with water-based glazes and vegetable oil.