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The Turing Tests: Expert Code Puzzles
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The Turing Tests: Expert Codebreakers
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The Turing Tests: Expert IQ Puzzles
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The Turing Tests: Expert Logic Puzzles
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The Turing Tests: Expert Number Puzzles
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The Turing Tests: Expert Sudoku
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The Turing Tests: Expert Word Puzzles
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The Twist of a Knife
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The Twyford Code: A Novel
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The Ultimate Code-Breaker's Puzzle Book
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The Ultimate Mathematical Challenge
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The Underground Abductor (Nathan Hale's Hazardous Tales #5)
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The Universe in a Box
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The Unlikely Spy
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The Untouchable
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