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Sudoku Classic is a number puzzle game where you fill a 9×9 grid so each row, column, and 3×3 box contains the digits 1 through 9. It tests your logic, memory, and deduction skills with puzzles ranging from easy to expert. Each new game offers a unique challenge that can be solved without guessing. Its simple rules and deep strategy make it endlessly replayable.
Play Sudoku Classic online for free at dubdoo.com. No downloads or registration required! Start playing instantly in your browser.
Classic Sudoku Game. Click on a cell to enter a number. You can enter numbers from 1..9. Every number can only occur once per row, column and 9x9 box. To delete a number using the numeric keypad in the game, you must enter the number again.

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