Sudoku
Classic sudoku, calmly made
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Key features
- Six levels from Easy to Extreme, every puzzle with one solution and graded by the techniques it needs
- Hints that teach: see the reasoning step by step, not just the answer
- Pencil notes, undo and erase, with three mistakes before it's over and one second chance
- A calm, premium look: a card on a sunlit desk, numbers that ink in, rows that trace as they finish
- Plays upright on a phone, and upright or sideways on a tablet or computer
Just sudoku, beautifully made
A clean, classic 9×9 sudoku with nothing in the way: a white card on a warm desk, soft window light, and numbers that ink in like a pen as you place them.
Six levels, honestly graded
Every puzzle has exactly one solution and is graded by the techniques it takes to solve, from Easy, where the next move is always in sight, through Medium, Hard, Expert and Master to Extreme, where you will need the advanced tricks.
Hints that teach
Stuck? A hint doesn't just fill a cell. It lights up the row, column or block that matters and walks you through the reasoning, step by step, naming the technique as it goes. You get three per puzzle.
Play your way
- Pencil notes for the candidates you're weighing
- Undo and Erase whenever you change your mind
- Three mistakes allowed, then one second chance
- A score that rewards quick, steady solving and big finishes: complete a row, column and block in one move for a ×15 bonus
- Play with touch, or with the mouse and keyboard (number keys, arrows, N for notes, H for a hint)