kasparvez: Tal recollects: "An amusing episode accompanied the start of this tournament. The day before, on the birthday of one of my friends, by no means a chess player,someone suddenly expressed the desire that in my game with the Dutchman Kuijpers the following day i should sacrifice something.
'Which piece, and on which square, would you like?' i asked jokingly.
'Well, let's say a Knight on e6.'
The following day i had naturally forgotten this conversation, and my game with Kuijpers first proceeded quietly, and then became more complicated in the time-scramble. I made a move, and with time-trouble over Kuijpers realised that mate was inevitable, and resigned. In the foyer my delighted friends gathered round.
'Good man! Did you do it on purpose?'
'Well, make that last move with your Knight at e6?'
I immediately remembered, and realised that my chess prestige in these circles had risen sharply, and so as to maintain this, i pompously asked:
'What would you like me to sacrifice tomorrow, and where?'"
[from: 'The Life and Games of Mikhail Tal']