填空题 Chess has changed a lot over the past two decades. The rise of the professional chess circuit has seen the competitive aspect of the game overtake the scientific and artistic. The sole aim of the modem master is to win.

填空题 Nowadays, the professional chess circuit puts more emphasis on its ______ rather than its scientific and artistic qualities.

填空题 That the majority of the world's top ten chess players are under 30 exemplifies the ______ in the chess playing.

填空题 A great deal of work is done for ______ and that's why much modern chess is played off the board.

填空题 A single game lasting for several hours and the presence of the chess clock make contributions to the ______ of chess players during the match.

填空题 At the moment one player ultimately wins the match, he has reached a state of ______ at the top level of chess.