$ clisp

<...snip...>

[1]> (load "quarto.l")
;; Loading file quarto.l ...
;;  Loading file lp.l ...
;;  Loaded file lp.l
;; Loaded file quarto.l
T
[2]> (task33--game-demo)
Player 1: ONE
Player 2: TWO
Game state:
D    **** **** **** ****
C    **** **** **** ****
B    **** **** **** ****
A    **** **** **** ****
     1    2    3    4
Current player = ONE
NIL
[3]> (bye)
Bye.