Triad Stack

《Triad Stack》Intelligent Stacking and 3D Space Chess Duel.

Game Rules：

Both sides of the game take turns placing chess pieces in the nine grid. The rules are:

1. Only one chess piece can be placed in one square at a time;

If there are already chess pieces in the square, it is allowed to stack them up one by one, up to a maximum of 3 pieces, from bottom to top: Layer 1 to Layer 3;

3. The first chess piece cannot be placed in the center of the nine grid. Whoever uses their own three chess pieces to form a straight line first

Whoever wins. There are two types of situations where three chess pieces form a straight line:

(1) Three pieces on the same layer form a straight line (horizo​​ntal, vertical, or diagonal);

(2) Three different layers form a straight line, as shown in the following three situations;