A chess game consists of opening, mid-game, and endgame stages. However, not every game would have an endgame stage. This is because sometimes, a winner can be determined during mid-game.

• 一盘棋可分为开局、中局和残局三个阶段。但并非每盘棋都经过残局阶段，因为有些时候，在中局阶段就分出了胜负了。