A grid composed of a series of numbered cells arranged in a 9x9 layout, with some cells filled in and others empty, set against a simple background

Sudoku Classic Online

This game can be installed to your desktop for easy access

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Solve 10 levels of classic Sudoku

10 levels of classic Sudoku are waiting for you, and each one steps up the challenge. Stick to the basic Sudoku rules: fill in numbers from 1 to 9 so that no number repeats in any row, column, or 9x9 box. Enter numbers using the on-screen num pad or your keyboard. To remove a number, hit delete on your keyboard or just tap the same number on the num pad again. The game lets you use pencil marks too. Tap the Pencil icon to add possible numbers to a cell. You can also get help using the hint button, but only up to three times per level. Hints will highlight which numbers are right or wrong.

Click on end game/submit score to add your score to the leaderboard.

The Sudoku Classic Online game on Play123 has a leaderboard for saving scores.

Game Publisher: Zygomatic

More Games Like This

Looking for more number puzzles like Sudoku Classic Online? I spend hours with the easier version when I need a break - it's perfect for clearing my mind. For a different kind of brain workout try Brain Out which really makes you think outside the box. The Puzzle Games section has tons more challenges that'll keep your mind sharp and your fingers busy... And when you want something totally different Exit is a cool block sliding puzzle that'll test your spatial thinking.