The trouble with this is the possiblity of transcription errors. That and differentiating clues from numbers written in, although you could use pen for clues and pencil for solving. Which is why I have mine transcribed into Excel.
Liked the giant grid though - we need more of those imo!
Now, if we could just figure out a way of transcribing the sudoku program puzzles into a giant grid (with giant numbers, of course) in Excel (or indeed, anything else for that matter), we'd be sorted!
Thanks for the suggestions though
Luna