Each player chooses a set of 21 colored chess pieces and puts them on the board in turn. The player’s first chess piece must be placed at the corner of the board. This game is suitable for friends and family gatherings, and you can have fun together!

1. Each new chess piece must be connected to at least one chess piece of the same color on the chessboard, but it can only be connected at the corner position, and cannot be connected to the four sides of the chess piece. As for chess pieces of different colors, there is no restriction on the connection method.

2. When all players are unable to place chess, the game ends. The winner is the player who has placed the most squares and has the least squares left.