the ends of the fingers of the same hand. This makes a sudden sound effect, bringing the piece to the attention of the opponent. This is also true for capturing and dropping pieces. On a traditional shogi-ban, the pitch of the snap is deeper, delivering a subtler effect. Promotion A player's promotion zone consists of the furthest one-third of the board – the three ranks occupied by the opponent's pieces at setup. The zone is typically delineated on shogi boards by two inscribed dots. When a piece is moved, if part of the piece's path lies within the promotion zone (that is, if the piece moves into, out of, or wholly within the zone; but not if it is dropped into the zone – see Drops), then the player has the option to promote the piece at the end of the turn. Promotion is indicated by turning the piece over after it moves, revealing the character of the promoted piece. Promoting a piece is usually not compulsory; however, if a pawn or lance is moved to the furthest rank, or a knight is moved to either of the two furthest ranks, that piece must promote (otherwise, it would have no legal move on subsequent turns). A silver general is never required to promote, and it is often advantageous to keep a silver general unpromoted (it is easier, for example, to extract an unpromoted silver from behind enemy lines: a promoted silver, with only one line of retreat, can be easily blocked.) Rooks, bishops and pawns are almost always promoted, as these pieces do not lose any of their powers upon promotion. Promoting a piece changes the way it moves. The various pieces promote as follows: A silver general, knight, lance, or pawn has its normal power of movement replaced by that of a gold general. A rook or bishop keeps its original movement and gains the power to move one square in any direction (like a king). For a promoted bishop, this means it is able to reach any square on the board, given enough moves. A king or a gold general does not promote; nor can a piece that is already promoted. When captured, a piece loses its promoted status. Otherwise promotion is permanent. A promoted rook ("dragon king", 龍王 ryūō; alternate forms: 龍, 竜) moves as a rook and as a king. It is also called a dragon.