// Prompt the user for input, displaying an error message if the previous input was invalid. private string RequestInput(bool error) { Console.Clear(); Console.WriteLine(board.GetBoardAsString()); if (error) { Console.WriteLine("That was not a valid move. Please try again."); } Console.WriteLine($"{(turn ? "White" : "Black")}, type \"EXIT\" to end the game, or enter the cell in which to place your next piece (for example, \"I9\"):"); return(Console.ReadLine()); }