Infinite Sudoku (Extreme Edition) for Windows

If you think you've mastered Sudoku .. think again! Prepare to blow your mind with this unlimited collection of super-difficult Sudoku puzzles.Begin with classic 9x9 hard puzzles as you warm yourself up for the mind-bending Sudoku 16x16 or the aptly named Killer Sudoku! Killer Sudoku is a cross between Sudoku and Kakuro. The basic Sudoku rules apply .. but there's a twist - you also have to make sure that all the numbers within linked boxes add up to the number clue displayed in the top left corner....
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