To help you learn how to use our software, or for those who are new to Sudoku, we've prepared a few video tutorials.
For a quick start, have a look at the graphic on the right, and the usage tips below.

• Click any of the Easy, Medium, Hard, Fiendish buttons to start a built-in game
• Use only your mouse to play
• Right-click of the mouse to make a selection
• Left-click to set "pencil marks" to track possible choices
• Click the "Compete" button and enter your registered email address and password to play the Daily Challenge Game
• Click the "Take Out" button to print your own sudoku books
• Press "Esc" key to quickly hide the game window
• Drag the whitespace under the "Exit" button to move the window