Adding some annotations, and the description to the first problem I'm going to solve.
Defined a couple the lower limit and upper limit of the range used in the game, with global variables
Added the guess-my-number function ...

I'm doing all of this from memory (it's easy to recall the exercise that i've
read just an hour ago ... guess that is because is simple stuff for the
moment). However, I'm not sure if I'm doing it right, I've used "clisp
guess-my-number.lisp" and nothing happened :-(