Sudoku Classic (No Ratings Yet)Loading... PUZZLES lieren9 28 Sep , 2025 0 PLAY NOW!GAME INFOClassic 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.