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The classic 1–9 logic puzzle on a 9×9 grid. Fill every cell so no row, column, or 3×3 box repeats a digit. Tap a cell, then tap a number. Notes and hints included. Every puzzle has exactly one solution — solvable by logic alone.
Difficulty
🏆 Global Ranking
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Sudoku
The classic 1–9 logic puzzle on a 9×9 grid. Three difficulties, notes, and hints — every puzzle has a unique solution.
Mobilepuzzlelogic
📖 How to Play
- Tap an empty cell to select it, then tap a number on the pad
- Each row, column, and 3×3 box must contain 1–9 with no repeats
- Toggle Notes ON to pencil in small candidate numbers
- Erase clears the selected cell; Hint reveals one correct cell (score penalty)
- A wrong digit is counted as a mistake and shown in red
- On desktop use number keys, arrow keys, and N (toggle notes)
- Fill the whole grid correctly to win — score from time, mistakes, and hints feeds the global leaderboard