what is the maximum number of pawn moves?
Kilo, there is a maximum potential for 6 moves per pawn, and there are 16 pawns, so there is potential for 96 pawn moves. eight of these pawn moves must also be captures though, so there are 96+22=118 irreversable moves. To see a more detailed explanation of this and how to arrive at the correct maximum number of moves in a game(instant draw by 50 moves), check out pages 2 and 3 of this forum.
The watch thing is well known but cheesy..
Cheesy, may be. But well known?
Judging from the responses here, I'm not sure...