Play Sudoku Online — Free 9️⃣
Sudoku is the world's favourite number-logic puzzle. Fill the 9×9 grid so that every row, every column and every 3×3 box contains the digits 1 to 9 exactly once. Each game generates a fresh puzzle, highlights conflicts, and times your solve.
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How to play Sudoku
- Tap a cell, then tap a number (or type 1–9)
- Every row, column and 3×3 box needs digits 1–9 exactly once
- Conflicting digits are highlighted in red
- Fill the whole grid correctly to finish — beat your best time