Sudoku
Fill the 9×9 grid so every row, column, and box holds 1–9 once.
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How to play Sudoku
Fill every empty cell so each row, column, and 3×3 box contains the digits 1–9 with no repeats. Click a cell to select it, then press a number key to fill it; press 0 or Backspace to clear. Conflicting digits are dimmed. Solve it as fast as you can.
Sudoku leaderboard
Top scores — log in to compete.
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Sudoku — frequently asked questions
How is the puzzle generated?
Each game builds a complete solved grid by backtracking and then removes cells, so you get a fresh medium puzzle every time.
Is my best time saved?
Yes — your fastest solve time is stored in your browser and shown as your Best. Log in to put it on the leaderboard.
More black & white games
In the mood for more? Try Chess or 2048, or browse the full games list on Inkplay.