西洋棋

Chess is a two-player board game popular all over the world, and it is also one of the most popular games in the world. During the game, each player has six kinds of chess pieces, a total of 16 pieces, namely the castle (Rook), knight (Knight), bishop (Bishop), king (King), queen (Queen) and soldier (Pawn). At the beginning, white is the first mover, and then black is the second mover. In the game, the board used is a square consisting of 32 dark-colored and 32 light-colored (64 total 8X8) squares arranged alternately. Light-colored squares are generally called "white squares", and dark-colored squares are called "black squares". At the beginning of the game, the lower right corner of the board must be a white square. The white queen is placed on the white square; and the black queen is placed on the black square. The purpose of this game is to checkmate the opponent's king, so that the opponent's king has nothing to do. However, if the player stalemates the opponent's king before checkmate, it will be considered a draw. During the battle, each person takes turns to move their own pieces, and only one piece can be moved in one move (the only exception is Castling, where the king and the castle are moved at the same time in one move. The way of moving and capturing the pieces: the king, in all directions, Only one step. Queen, move in all directions, unlimited steps. Bishop, move diagonally, unlimited steps. Knight, go straight two squares, and then go one square to the side, you can cross other pieces. Castle, go straight, unlimited steps Count. Soldiers, soldiers who have never moved can choose to take one or two steps forward, soldiers who have moved can only take one step forward, and cannot retreat. Soldiers can only eat chess pieces that are obliquely in front. Note: When soldiers go to the opponent When reaching the bottom line, you must promote (Promotion) to your own castle, knight, bishop or queen, but you cannot change to a king, nor can you change or become an opponent's chess piece.