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The Most Difficult Geometric Puzzles: Tricky Puzzles to Challenge Every Angle of Your Spatial Skills$10.99
The Most Difficult Geometric Puzzles provides an exceptional challenge for even the most adept of puzzlers. The world's most ingenious puzzle setters have created a series of conundrums to stretch your spatial awareness and mathematical dexterity. With puzzles ranging from area mazes to trigonometric conundrums, this colorful puzzle book will keep you entertained for hours.