On the Tube

I was sitting between two guys on the Tube this evening, both doing Sudoku from page 28 of the Guardian. The guy on the left was doing the left-hand puzzle, "Simple", and the guy on the right had done the right-hand puzzle, "Killer". (And was flying through the middle puzzle, "Prize".) Everything and everyone in its place.

Then, to confirm my theory that 50% of District Line travellers from Earls Court live in West Kensington, the guy on the right (a smart City type) got off there :-)