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Test your powers of deduction against more than 200 devilishly difficult Killer Sudoku puzzles.
Famous puzzle-setter Gareth Moore has put together a supreme test of logic. These brand-new puzzles will provide hours of entertainment for anyone who enjoys a difficult mental challenge.
Gareth Moore
Dr. Gareth Moore is the internationally bestselling author of a wide range of brain-training and puzzle books for both adults and children. His books have been published in 29 different languages. He is the creator of the online brain-training site BrainedUp.com and runs the daily puzzle site PuzzleMix.com.
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