Sod-U-OK?

Alright don't ask me how, I mean it's probably a fad or something, but in the last few weeks during the journey home, I've just started doing some of those Soduko puzzles in the free London papers.

Okay, so I'm new at it, but I have managed to finish a few of them and yesterday I just happened the woman sat next to me looking across at my finished puzzle and checking off her answers, I laughed.