- Publisher: Unknown Worlds Entertainment
- Release Date: July 2006
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PC GamerOn your first puzzle, you'll notice helpful features, such as spot-lit columns and rows that intersect at selected squares, highlighting each instance of a chosen number on the board. These extras elevate Zen of Sudoku into an original experience, making it an improvement over other Sudoku games and books on the market. [Oct 2006, p. 58]
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PC Gamer UKNo surprises, just great ease-of-use and an endless supply of puzzles. [Apr 2007, p.100]