When a piece first makes a capture, it promotes. (If it can: a few important pieces do not promote.) Promotion has the effect of changing how a piece moves. See the table above for what each piece promotes to. Promotion is effected by turning the piece over after it moves, revealing the name of its promoted rank. Promotion is both compulsory and permanent. Often "demotion" would be a better word, for most powerful pieces 'promote' to a gold general, which is a weak piece. It is the weaker pieces that tend to become more powerful upon making a capture.