- Game control:
Sudoku Classic is a classic puzzle game, which is available on the free online flash game website www.t45ol.com. Enter digits from 1 to 9 into the blank spaces. Every row must contain one of each digit. So must every column, as must every 3X3 square. Click on “Quit” to pause your game. Your progress will be saved and you can continue the game at a later time.