Join the ranks of the geniuses, and leave behind the merely brilliant by solving 20 tough types of puzzle like those found at international competitions. They require no verbal skills, just logic, simple arithmetic, and a sharp pencil with a good eraser. Follow twisting paths made by worms across triangular grids, find lost ships in grids with only a few shapes visible, and rearrange dominoes (with their edges removed) according to a diagram. And fun hex loops, skyscrapers, and other fiendish brainteasers. "
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Join the ranks of the geniuses, and leave behind the merely brilliant by solving 20 tough types of puzzle like those found at international competitions. They require no verbal skills, just logic, simple arithmetic, and a sharp pencil with a good eraser. Follow twisting paths made by worms across triangular grids, find lost ships in grids with only a few shapes visible, and rearrange dominoes (with their edges removed) according to a diagram. And fun hex loops, skyscrapers, and other fiendish brainteasers. "
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