This version is entirely programmed in ActionScript 3.

Click in any square and type one or more digits. You can keep track of possibilities in each square by typing them in the square.

Tab and Shift-Tab will move forward and backward through the cells.

You can download an Adobe AIR Application based on the same ActionScript code. You can even download the source code!

My favorite Sudoku sites:

• https://www.websudoku.com
• https://www.sudokuslam.com
• https://www.jigsawdoku.com/
• https://www.dailysudoku.com
• The Sudoku Susser (Download a free Mac/Win/Linux Sudoku program)