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Brainstrains: Eye-Popping Puzzles - de Schepper, Peter, and Coussement, Frank, and Kay, Keith

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These challenging and brilliantly colorful puzzles will work out the brain and amaze the eye. Many of the pictures have a trick to fool the puzzler, from vivid optical illusions to 3-D effects that dazzle. Other problems feature a mathematical component--but even before doing the arithmetic, you've got to figure out the logic behind the question. ... Read More