Written in ANSI Common Lisp. A public multiple-connection server which allows the playing of Solitaire through a text-based protocol. This is basically so that you can make your own graphical client and use this as the back-end.
There are not so many chess implementations in LISP (at least, to my knowledge)
Here is one.
No hay muchas implementaciones del ajedrez en LISP (que yo sepa)
Ahí va una.