47797685
9781544840123
Books, Sudoku is the author of 'Sudoku Puzzle Book, 1,200 Puzzles - 300 EASY, 300 MEDIUM, 300 HARD and 300 EXTRA HARD: Improve Your Game With This Four Level Book (Sudoku Puzzle Books Series 2) (Volume 39)', published 2017 under ISBN 9781544840123 and ISBN 1544840128.
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