import java.util.*;

// NOTE: No need to play a game
// Just set up a board with all 9 squares filled
// A 2-D array is an array of rows; and each row is an array of columns.
public class Proj05_TicTacToe {

	// r for row, c for col
	public static char[][] getBoard() {
		char[][] board = new char[3][3];
		for (int r = 0; r < board.length; r++) {
			for (int c = 0; c < board[r].length; c++) {
				board[r][c] = ( (r+c)%2==0 ? 'X' : 'O');
			}
		}
		return board;
	}
	
	public static void main(String[] args) {
		char[][] board = getBoard();
		for (int r = 0; r < board.length; r++) {
			System.out.println( Arrays.toString( board[r] ) );
		}
	}

}