enum BoardSpace
{
    None,
    X,
    O
}
void Main()
{
    int rows = 3;
    int columns = 3;
    BoardSpace[] board = new BoardSpace[rows * columns];
    BoardSpace currentTurn = BoardSpace.X;
    for (int i = 0; i < board.Length; i++)
    {
        for (int i = 0; i < rows; i++)
        {
            for (int j = 0; j < cols; j++)
            {
                Console.Write(currentTurn switch { BoardSpace.X => "X", BoardSpace.Y => "Y", _ => " ") });
            }
            Console.WriteLine();
        }
        currentTurn = currentTurn == BoardSpace.X ? BoardSpace.O : BoardSpace.X;
        bool validInput = false;
        int row = -1, col = -1;
        while (!validInput)
        {
            if (xturn)
                Console.WriteLine("X's turn, enter coordinates to play X,Y:");
            else
                Console.WriteLine("O's turn, enter coordinates to play X,Y:");
            string[] coords = Console.ReadLine().Split(',');
            if (coords.Length != 2
                || !int.TryParse(coords[0], out row)
                || !int.TryParse(coords[1], out col)
                || row <= 0 || row > rows
                || col <= 0 || col > columns)
            {
                Console.WriteLine("Invalid input, try again");
            }
            else
            {
                row--;
                col--;
                if (board[row + column * rows] != BoardSpace.None)
                {
                    Console.WriteLine("Someone has already played in that spot, try again.");
                }
                else
                    validInput = true;
            }
        }
        board[row + column * rows] = xturn ? BoardSpace.X : BoardSpace.O;
        if (CheckWin(board, rows, columns, currentTurn))
        {
            Console.WriteLine(currentTurn + " has won!");
            return;
        }
    }
    Console.WriteLine("Game was a tie");
}

bool CheckWin(BoardSpace[] board, int rows, int columns, BoardSpace curr)
{
    for (int col = 0; col < columns; col++)
    {
        bool matched = true;
        for (int row = 0; row < rows; row++)
        {
            if (curr != board[row + col * rows])
                matched = false;
        }
        if (matched)
            return true;
    }
    for (int row = 0; row < rows; row++)
    {
        bool matched = true;
        for (int col = 0; col < cols; col++)
        {
            if (curr != board[row + col * rows])
                matched = false;
        }
        if (matched)
            return true;
    }
    for (int row = 0; row <= rows - 3; row++)
    {
        bool matched = true;
        for (int offset = 0; offset < 3; offset++)
        {
            if (curr != board[row + offset + (col + offset) * rows)
                matched = false;
        }
        if (matched)
            return true;
    }
    for (int row = 2; row < rows; row++)
    {
        bool matched = true;
        for (int offset = 0; offset < 3; offset++)
        {
            if (curr != board[row + offset + (col - offset) * rows)
                matched = false;
        }
        if (matched)
            return true;
    }
    return false;
}