40 classic 9×9 puzzles
10 sheets with four puzzles each, progressing from more clues to fewer clues. Separate answer file.
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Sudoku for the family
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English edition · A4 paper
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Geometry Puzzles
30 puzzles about shapes, symmetry, area and visual reasoning. Study the picture, find your own approach, then compare it with the explanation.
Download 6 puzzles with answersTake a lookGeometry Challenge
30 challenges about angles, areas, shortest paths and 3D shapes. Sometimes a solution becomes simple when you look at the picture differently.
Download 6 puzzles with answersTake a lookSurprising Physics
25 puzzles about everyday things: motion, water, heat, light, sound and magnets. Predict what will happen and explain your reasoning. Then compare your ideas with the answers.
Download 6 puzzles with answersTake a lookShop
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