About 12×12 Medium Sudoku
A 12×12 Sudoku uses numbers 1–12 and twelve 3×4 boxes. Significantly harder than 9×9.
At Medium difficulty, 40% of the 144 cells are pre-filled, leaving 86 cells for you to solve. A satisfying challenge for most players.
Tip: Scan each row, column, and box for numbers that can only go in one place.
Other difficulty levels for 12×12
Questions
How many medium 12×12 Sudoku puzzles are available?
Unlimited. Every time you click "New Game" a brand-new algorithmically generated puzzle is created. You will never run out of puzzles.
Are these puzzles printable?
Yes! Visit our printable Sudoku page to generate 4 puzzles per page as a PDF. Free, no login needed.
What solving techniques does Medium difficulty require?
Naked singles, hidden singles, and some elimination techniques.
Play Medium 12×12 Sudoku now
Free, instant, no login — works on mobile, tablet and desktop.
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