Prime Sudoku
About Prime Sudoku
Prime Sudoku is a free browser-based number puzzle game where players fill a 9×9 grid using classic Sudoku logic rules.
Players place the numbers 1 to 9 in every row, column, and 3×3 box without repeating any digit. Multiple difficulty levels make Prime Sudoku approachable for beginners and satisfying for seasoned puzzle solvers.
How to play Prime Sudoku
Prime Sudoku is played by tapping cells and selecting digits to fill a 9×9 grid without repeating numbers in any row, column, or box.
Controls
- Mouse / Tap
- Select an empty cell on the 9×9 grid
- Number pad
- Choose a digit (1–9) to place in the selected cell
- Erase button
- Clear an incorrect or unwanted number from a selected cell
Tips
- Select a difficulty level from the start screen to begin a new puzzle.
- Tap or click an empty cell on the 9×9 grid to highlight it.
- Choose a number from 1 to 9 on the on-screen pad to fill the selected cell.
- Ensure the chosen number does not already appear in the same row, column, or 3×3 box.
- Use the erase button to remove any incorrectly placed digit and try again.
- Continue filling cells until every row, column, and 3×3 box contains all nine digits to complete the puzzle.
Why Prime Sudoku stands out
Prime Sudoku offers three deliberate design choices that set it apart from other browser puzzle games.
- Selectable difficulty levels. Players choose their challenge before each puzzle begins, making Prime Sudoku welcoming to newcomers and veteran solvers alike.
- Touch-first cell input. The tap-to-select, tap-to-fill interface is optimised for touchscreens, giving mobile players a smooth and natural experience.
- Instant browser play. No download or account is needed; Prime Sudoku loads and runs immediately in any modern browser on any device.
- Classic rule fidelity. The game enforces standard Sudoku constraints precisely, making every completed grid a valid, logically sound solution.
Prime Sudoku FAQ
Prime Sudoku answers the most common player questions below, covering gameplay basics, difficulty, cost, and device support.
- What is Prime Sudoku?
- Prime Sudoku is a free browser number puzzle game based on classic Sudoku rules. Players fill a 9×9 grid with digits 1 to 9 so that no number repeats in any row, column, or 3×3 box.
- Is Prime Sudoku free to play?
- Yes, Prime Sudoku is completely free to play in any modern browser. No download, account, or payment is ever required.
- Does Prime Sudoku have different difficulty levels?
- Yes, Prime Sudoku lets players choose from multiple difficulty levels before starting a puzzle. This makes the game suitable for both beginners and experienced Sudoku players.
- Can you play Prime Sudoku on a mobile device?
- Yes, Prime Sudoku is fully playable on mobile browsers using touch controls. Tap a cell to select it, then tap a number on the on-screen pad to fill it in.
- How do you win Prime Sudoku?
- You win Prime Sudoku by correctly filling every cell in the 9×9 grid so that each row, column, and 3×3 box contains the digits 1 through 9 without any repeats.
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