KI Tic Tac Toe на Андроид

Rules of the game
By setting and analyzing this class of games (a superset of the game Tic-Tac-Toe), to simplify understanding and comparison, we will divide the rules of the game into three parts: the rules of the move, the rules of winning and the restrictions. Consider the game Operational tic-tac-toe according to this approach.
Move rules:
Players take turns, one after the other.
The player who plays for the cross goes first.
The current player makes a move to any of the unoccupied cells.
Winning rules:
The player whose symbols form a line (horizontal, vertical, diagonal) of three symbols wins.
A draw is awarded when the entire playing field is full and it is impossible to appoint a winner.
Limitations:
A player cannot make a move to a cell in which his or another player's symbol is already located.
You cannot continue making moves after a draw or a winner has been declared.
Now that the rules of the familiar game are set according to the proposed approach, the reader will find it easier to navigate the rules of Tactical and Strategic tic-tac-toe.
The sets of Strategic Tic-Tac-Toe rules are based on the Tactical Tic-Tac-Toe rules, so we will present them in the suggested form.

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