Sudoku Lottery

where can i play online Sudoku?
I searched many sites but all i can get was Gambling game and lottery games. I don’t want that kind of stuff.tell me some free online games website which offers games like Sudoku, teen patti & where i can win some cash.
Best sudoku site I’ve found is http://www.websudoku.com
Scratching off a $5 SUDOKU Instant Lottery Ticket
