You need Java to run XS/XXL Sudoku. Here's a link to download it.

Would you like XS/XXLSudoku on your site ? Please, send an email to info@danidemi.com

Game>New
From 'game' menu you can start a new game and change the dimension of the next game.

Aids>Show Red & Green
From this menu you can activate some interesting aiding functions.

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With XS/XLLSudoku you can choose the dimensions of the game grid starting from a straightforward 4x4 grid suited for kids to a very cumbersome 25x25 grid for the professional solvers.