There are two handshakes in a chess game. The handshake at the beginning of the game, before the clocks are started. And the handshake before or after the clock has been stopped at the end of the game. The handshake at the beginning of a game symbolyses a mutual respect between the opponents about to battle one another. Also, it symbolyses a respect for the ongoing competitive event, for the organisers, sponsors, spectators and referees. The second handshake symbolises fixating the final result of the game, whether it is a draw or a win for either side. It symbolises that both players agree on the final outcome of the game. This has become a widely accepted tradition and is used in virtually all chess tournaments with both short and long time controls. A great tradition, isn't it?