Challenging, provocative exercises in mental acuity test mathematical prowess, abstract reasoning, and even moral sensitivity and human concepts of beauty. Includes such mind-bogglers as "The Omega Prism," "Rubik's Tesseract," "Cosmic Rosetta Stone," "Alien Ants in Hyperspace," "Human Brains in a Jar," and "The Elk Hunter's Abduction." Detailed solutions at the end. "The most original--and challenging--puzzle book for years."--Scientific American.
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