Play Sudoku Online Free

Play a classic 9x9 Sudoku puzzle directly in your browser. Fill in the empty cells so each row, column, and 3x3 box contains the numbers 1-9 without repetition.

Click "New Puzzle" to generate a fresh puzzle with 40 cells to solve. Use the "Check" button to verify your solution at any time. Great for brain training and logical thinking practice.

How do I solve Sudoku puzzles?

Start by scanning rows, columns, and boxes for cells where only one number is possible. Use elimination to narrow down options, and look for naked pairs or hidden singles for harder puzzles.

Are the puzzles randomly generated?

Each puzzle starts from a valid solved grid with 40 cells randomly removed. This guarantees a valid solution exists for every generated puzzle.