I found a sudoku generator (and solver) in javascript @ this place made by a guy named David J. Rager so I fitted it into Sg.
All objects created are conveniently packaged inside a group. The solution is there as well, only its visibility has been turned off.
Check it out if you want endless of sudoku fun!
PS. The code David has written is VERY well commented so be sure to check that out as well. DS.