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Sign Up for Iron Sudoku

Iron Sudoku is 100% free to play. Anyone can play the daily puzzles and chat with other players from around the world. If you want to take advantage of Iron Sudoku's many extra features, you can upgrade to a Pro account at any time.

Sign up today and you'll be able to use Iron Sudoku's exclusive Checkpoint feature free for 14 days!

NOTE: Iron Sudoku requires that you use a modern browser in order to function properly.

(A few popular examples)

Internet Explorer 6.x (or greater) Yes
Firefox 1.x (or greater) Yes
Safari 1.x (or greater) Yes
Netscape 6.x (or greater) Yes
Opera 8.x (or greater) Yes
Internet Explorer 5.x No
Netscape 4.x No

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Iron Sudoku works best with the Firefox web browser.

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Iron Sudoku Profile

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(Your personal info will never be shared and will only be used to contact you about Iron Sudoku stuff)