The great chess grandmaster Siegbert Tarrasch once composed an examination paper featuring the following questions (and answers):

Q: Account briefly for the popularity of the Queen Pawn Opening in matches of a serious nature.
A: Laziness.

Q: What is the duty of an umpire where a player willfully upsets the board?
A: Remove the bottle.

Q: What exceptional circumstances will justify the stopping of clocks during a tournament game?
A: Strangling a photographer.

[On June 9, 1970, the crew of Soyez-9 played the first chess game in space (against the ground crew) using a chess set specifically designed for a weightless environment. The game ended in a draw.]