🔢 Sudoku

🎮 How to Play Sudoku

Controls: Click a cell, then click a number 1-9 (or use keyboard)

Fill the 9x9 grid so every row, column, and 3x3 box contains the digits 1 through 9 exactly once. Pure logic — no guessing required!

💡 Tips & Strategy

• Look for rows/columns/boxes that already have many numbers filled
• Use 'pencil marks' to track possible values for each cell
• Find 'naked singles' — cells with only one possible value
• Check 'hidden singles' — when a number can only go in one cell of a row/column/box

📜 About Sudoku

Sudoku was created in 1979 by Howard Garns. It became a global phenomenon after Wayne Gould helped publish it in The Times in 2004.

🎯 Why You'll Love Sudoku

Sudoku is one of those games that stays fun no matter how many times you play it. Its simple controls make it easy to pick up, but the gameplay offers enough depth to keep you coming back for more. Whether you have just a few minutes during a break or want to settle in for a longer session, Sudoku delivers consistent entertainment.

Best of all, you can play Sudoku completely free at classroom247 with no downloads, no signups, and no ads interrupting your gameplay (only between sessions). Just click "Start" and enjoy!