3Sudoku

3Sudoku is a clean, classic Sudoku puzzle with three difficulty levels, so it suits both newcomers and seasoned number-crossers. Fill the grid, use your logic, and enjoy a relaxing brain workout.

How to Play 3Sudoku

You are given a grid partly filled with numbers. Complete it so that every row, every column, and every box contains the digits without repeating any. Start with the easy cells, use deduction for the rest, and choose the difficulty that matches your mood.

Controls

• Select: Click or tap a cell, then choose a number to place it.
• Difficulty: Pick from three levels before you start.
• Mobile: Touch controls supported.

Tips and Tricks

• Fill in the obvious single-option cells first to open up the board.
• Scan rows, columns, and boxes together, not one at a time.
• Use pencil-mark thinking. Note candidates before committing.
• Start on easy to warm up, then step up the difficulty.

Frequently Asked Questions

How many difficulty levels does 3Sudoku have?

Three, so you can pick an easy, medium, or harder puzzle to match your skill.

Is 3Sudoku free to play?

Yes. 3Sudoku is completely free to play here on Nelof, with no download, install, or sign-up required.

Can I play on mobile?

Yes. The game runs directly in your browser and works on desktop, tablet, and phone.