sudoku workbook Modern Sudoku was popularized by Nikoli in Japan in the 1980s. It has since become a global phenomenon, with daily puzzles appearing in newspape
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 medium print
sudoku workbook Modern Sudoku was popularized by Nikoli in Japan in the 1980s. It has since become a global phenomenon, with daily puzzles appearing in newspapers and online platforms worldwide.
sudoku workbook Tips for Improving Your Sudoku Speed
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sudoku workbook Basic Sudoku Rules for Beginners
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sudoku workbook The Benefits of Playing Sudoku Daily
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sudoku workbook Tips for Improving Your Sudoku Speed
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sudoku workbook What is Sudoku and How to Play?
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sudoku workbook What is Sudoku and How to Play?
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