This is absolutelly new and original sudoku web aplication. You can create your custom sudoku, use Assistance, Tiping sequence (very usefull), later you can play with other players and win real money (secure system is very safe with complex algorithm), or just play for fun on nice and profesional page.
You can try it here: http://www.playsudoku.eu/
If you have any suggestions or questions, write here or PM.