\xef\xbb\xbfusing System;\x0d class a\x0d {\x0d public static void Main()\x0d {\x0d for (int y = 0; y < 25; y++)\x0d {\x0d for (int x = 0; x < 25; x++)\x0d {\x0d Console.Write(" {0}", Convert.ToChar(65 + Math.Abs(x - 12) + Math.Abs(y - 12)));\x0d }\x0d Console.WriteLine();\x0d }\x0d }\x0d }
Note that non-ascii characters in the above source code will be escaped (such as \x9f).