Catching the black king in a crossfire leading to checkmate.
在带领围擒的一个交火中捕捉黑色的国王。
The object of the game is to get your opponent's King into Checkmate (I. E. : no legal moves available), whilst defending your own King from a similar predicament.
这个游戏是让你将对手的国王消灭掉。同时要捍卫自己的国王不被对方消灭。
Likewise, if you are playing a chess computer, the reason why it moves knight to bishop 3 or whatever might be because that's the only move to guard against checkmate.
同理,如果在电脑上下国际象棋,为什么把骑士移动到主教3的位置或者其它位置,因为只有那样走才能保护将军。
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