Here is a game for those who love to play Sudoku on a daily basis. This game has 4 different levels; Easy, Normal, Tough and Pro. This is something that is not found in most games. The games you normally find have a single level, and at most at least three levels. This is a game with four different levels and this makes it a very challenging game to play. Apart from playing this free online Sudoku game on the internet, you can print it out on paper and play it when you are ion your way to work in the subway, or bus. It has a timer, but you can disable it if you do not want to be put under pressure. The pride for Sudoku players is when they can solve a puzzle within a given time; you can opt to be timed or not. When you click on any of the boxes, you get a pad on which you can select any number; the numbers can also be deleted using the X button on the pad. The game can be used for training on the penciling method of solving Sudoku; when you click on the small white box, you can input small numbers which you think could be likely candidates for that box. In Sudoku, you get to put the numbers 1 to 9 in the small 3X3 grids and they should not be repeated. In the larger 9X9 grid, the columns and rows should have the numbers 1 to 9 but they should not be repeated. Given this fast, a game that allows you to do the penciling method is great especially for those who are just learning how to play the game. This is a free online Sudoku game that you will enjoy playing whenever you have the free time; welcome to Sudoku and good luck.