Sudoku

Solve a clean 9×9 Sudoku board with selectable difficulty and resumable puzzles.

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Ready to play?

Select an empty cell and choose a number from 1 to 9. Conflicts are highlighted as you play. Complete the full valid grid to finish the run. Save Progress stores the exact puzzle and elapsed time.

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ABOUT THE GAME

How to play Sudoku

Sudoku is a classic 9×9 number-placement puzzle with multiple difficulty levels and a timer. Fill every row, column and three-by-three box without repeating a number. The original puzzle state is preserved and ZGame adds score, account progress and leaderboard support.

Select an empty cell and choose a number from 1 to 9. Conflicts are highlighted as you play. Complete the full valid grid to finish the run. Save Progress stores the exact puzzle and elapsed time.

Open-source attribution

This ZGame version adapts Sudoku Game by mahanaatma1. The bundled source is distributed under MIT (as stated in the bundled README). ZGame adds its own responsive player integration, account saves, score handling and surrounding instructions.

View source links, license details and all game credits.

Controls

Click or tap an empty cell, then choose a number
X removes the selected entry
Use Pause/Resume from either the puzzle or ZGame toolbar

Tips

Start with rows or boxes that already contain many numbers.
Use elimination instead of guessing whenever possible.
Recheck highlighted conflicts before filling nearby cells.