line, the player must promote the pawn into a chess piece among a
Castle, Knight, a bishop or a queen.
The rule of taking pieces:
If the player moves to the position
where there is an opponent's piece, the opponent's piece will be
captured and the square will be occupied.
Special: The rule of moving and capturing pawns is straight
forward and diagonally. If there is an opponent's pawn in one
square of the pawn, the pawn can capture the pawn and occupy
the square.
Kill:
If a pawn can kill the opponent's pawn in the next step
according to the rules of move and capture, it is called attacking
the opponent's pawn
When the king of one side is killed by the opponent's pawn, this
wins.
