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Title: Solve It Like Sherlock: Test Your Powers of Reasoning Against Those of the World's Most Famous Detective, Author: Stewart Ross
Title: The Brainpower Bible, Author: Dan Moore
Title: Brain Candy: Science, Paradoxes, Puzzles, Logic, and Illogic to Nourish Your Neurons, Author: Garth Sundem
Title: The GCHQ Puzzle Book II, Author: GCHQ

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