Dozens of challenges for every skill level await in this extreme version of Sudoku!
Choose a level and game, then click the square and select the number you would like to enter, or X to clear the cell. When hints are turned on, incorrect cells will appear gray.
Something went wrong, please try again later.
Just a few more seconds before your game starts!
This is taking longer than usual.
Want to wait a bit more, or reload the game?
Oops, something went wrong. Try again!
Oops, something went wrong while loading your game. Try again!
You need this plugin to play the game.
After the upcoming message from our sponsor, you can keep playing this game for free!
This game uses modern browser features which your browser doesn't support.
For the best results, please get the latest version of Google Chrome.