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Number puzzles, spatial/visual puzzles, cryptograms, Sudoku, Kokuro, logic puzzles, and word games like Frame Games are
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Keep your mind fit with brain aerobics! If you like great mental exercises, try brain aerobics. All you have to do is op
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No special skills are needed to tackle these fiendish puzzles beyond common sense, logic and a tenacious will not to giv
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Divide a rectangular cake into five even pieces, calculate the cost of running a successful casino, figure out the maxim
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Kids love exploring new ways of solving problems, especially in fun and challenging puzzle formats. In Math and Logic Pu
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Gyles Brandreth is an expert setter of challenging brainteasers and a well-known deviser of mindbending puzzles. Here, m
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It's true--playing with numbers can raise your I.Q., and help you think more clearly! The most popular numbers game
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Hundreds of Challenging Color Puzzles to Baffle and Entertain You Open up this gigantic Puzzle Chest and you’ll find a
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Over 400 puzzles to keep you amused — they’re fast and not too tough! A clever new collection offers a fun and satisfyi
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Discusses games with numbers, geometrical figures, logic, probability, and paradoxes, and looks at their mathematical ba
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