Master Sudoku
Today's board starts with Master selected. Check the date on the game and use the difficulty control whenever you want another level.
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The highest available level
Master is the highest difficulty in the current game. Choose it for a demanding attempt, and allow yourself to pause to check an explanation or revisit a candidate removal.
Keep reasoning separate from assumptions. The strategy library offers individual lessons, while the focus guide helps you resume an interrupted attempt.
Prefer to solve on paper?
Open Master printable Sudoku for automatic downloads in A4 or US Letter. Check the pack's date coverage before comparing it with today's board: the weekly pack covers a previous week.
Choose your next session
The difficulty guide explains the available levels. For questions about your pace, read how solving times vary. You do not need to beat a time limit to try another level.