What is the essence of the Gobang Bagua formation?

The essence of the Gobang Bagua array: Black’s pieces are all connected in a sun shape, similar to the horse steps in chess. In the Bagua array, any line has a black one defending, and a white one cannot attack. When switching between offense and defense, it is very easy for Black to find a good player who can connect three and two routes with one stone. At that time, White has no way to attack, no way to defend, and there is no other way to defeat it. This formation is a representative masterpiece of the "defend and wait for attack" tactic in traditional Chinese folk formations.

According to mathematical principles, it is concluded that when a chessboard of any size (i.e. X*Y, (Xgt; =5, Ygt; =5 and X, Y∈Z*)) is filled with all the After all the positions that can be reached, there is no continuous gap of more than or equal to five chess pieces on the straight lines and diagonal lines of the chessboard. So when one side uses this method to fill up the board, it is impossible for the other side to win.