Code of the original game created by R.J.Zylla
edited for Kryptos by Patrick Foster. Thanks R.J.!!
There may be a few bugs in the program, you'll notice one oddity when the
columns and rows tend to all kinda shift when you click a letter. Also you
may experience a stack overflow at some point, this usually occurs if you click
on a letter that is far away from the empty slot. Just ignore it and keep going.
