True capture

True capture, or the Drop Rule, is an important shogi rule in most versions. When a piece is captured by you, you can, instead of your move, put it back on the board as a piece under your control! This can mean that you or your opponent is up with barely more than a king against 20 something pieces or even more, as your pieces switch sides amd attack! Note that if the piece was promoted, it loses its promotion upon capture.