Terry H. Stickels

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Classic Shrewd Challenges

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The Big Book of Mind-Bending Puzzles (Mensa)

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The Mammoth Book of Brain Teasers

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Are You as Smart as You Think?: 150 Original Mathem …

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Cunning Mind-Bending Puzzles: Official American Men …

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Devious Mind-Bending Puzzles: Official American Men …

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Little Book of Bathroom Sudoku: 160 Brain- strainin …

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Math Puzzles and Games, Grades 6-8: Over 300 Reprod …

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Mensa - djævelske opgaver

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Mensa - snørklede opgaver