The diagonal constraint adds a new layer of complexity that keeps even expert solvers engaged.
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Brain Training
Improve your logical thinking and pattern recognition with this enhanced puzzle format.
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Faster Solutions
Paradoxically, the extra constraint can sometimes make puzzles easier to solve!
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Competition Ready
X-Sudoku appears in world championships. Practice here to compete globally.
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Play Anywhere
Our responsive design works perfectly on desktop, tablet, and mobile devices.
sudoku with numbers and letters
sudoku meme Sudoku competitions are held globally, where speed solvers compete to finish complex grids in the shortest time possible.
sudoku meme Sudoku Strategies: Scanning and Marking
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sudoku meme History of the Sudoku Puzzle
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sudoku meme Tips for Improving Your Sudoku Speed
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sudoku meme History of the Sudoku Puzzle
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sudoku meme Tips for Improving Your Sudoku Speed
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sudoku meme Tips for Improving Your Sudoku Speed
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