Fiendishly complex game popularised by
British radio show, "I´m Sorry I Haven´t Got A Clue". The game is based on moves
around the London
Underground (Tube) map. The winner is the first to reach
Mornington Crescent.
From the FAQ: "It is impossible to approach Mornington Crescent on a Direct Diagonal as a quick look at the tube map will show. (Unless you play
Real Geography in which case a Direct Diagonal
may well be possible, but not being a
Real Geographist I wouldn't like to say)."