The recent Sudoku fever made me rethink the brain itching site! here it is a very neat and good sudoku game, enjoy. BTW, if you don't yet know the game, the objective is to have all rows and columns and highlighted 3*3 squares have every digit from 1 to 9.
It will be great, if you share your records, in the comments section. BTW, if you don't know what Sudoku is take a look at here. Also Spectrum recently had a short article on sudoku solution. It is interesting to find an algorithm that can solve the puzzle in polynomial time, or prove that it is impossible to do so.