TigerFox was written in 1984, originally to run on the HP 110
(The Portable), a very early notebook computer.  It was later ported to
the HP 95LX and HP 100/200LX Palmtop computers.  This version runs under
MS-DOS on a PC in CGA (an ancient video mode).  It probably won't work
on Windows XP, but should work under most earlier Windows (and MS-DOS,
of course).  This game is copyrighted by Everett Kaser (everett@kaser.com)
but may be downloaded and played for free.

It's a very simple game:
1) You're the little circle with a "nose" on it (indicating the direction
   in which you're travelling).
2) You're trying to clean up the Fox's trail and catch the Fox, while
   avoiding the Tiger.
3) You move faster than the Fox, but at the same speed as the Tiger.
4) You, the Tiger, and the Fox can all pass through Gates, around the
   perimeter of the maze, that are open.  Only YOU can pass through Gates
   that have a dotted-line across them.  This provides a method for you
   to gain distance from the Tiger.
5) The Tiger ALWAYS takes the shortest path to YOU.  This can be used to
   "lead" the Tiger around while you clean up the Fox's path.
6) Some mazes have a "Maze Changer", which is represented by a square spiral.
   If you enter this, it will automatically change to the next maze, leaving
   you, the Tiger, the Fox, and all existing Fox Trails exactly where they
   are.  You get no points for doing this.
7) You get 1 point for every Fox Trail you clean up.  You get 100 points for
   catching the Fox with all of the Trail cleaned up (you have to come up
   on the Fox from behind!), and you lose 250 points if you catch the Fox
   without cleaning up all of the trail.  The Tiger gets 250 points if it
   catches you.  You continue playing as long as your score is >= the Tiger's
   score.  (If your score goes negative, that's less than the Tiger's and
   the game is over, but you're given a score of 0, not a negative number.)
8) The game setup is controlled by F1-F4:
  F1 - starts the game playing (but it waits for you to push a key before
   actually starting everything moving; pressing turn-left or turn-right
   will start the game AND take that action; pressing any other key will
   start the game and you will start moving forward (if possible) from
   your current position).
  F2 - lets you change the keys that are used for "turn-left" and "turn-right".
   By default these are left-cursor and right-cursor respectively.
  F3 - changes to the next higher maze number. (There are 45 mazes.)
  SHIFT-F3 - changes to the next lower maze number.
  F4 - increases the speed setting (the default is 20), making the game faster.
  SHIFT-F4 - decreases the speed setting, making the game slower.

    I recommend starting with the game speed at 20 or lower, but as you get
    used to "turning-left" and "turning-right" (it takes a little practice,
    but your brain will get used to it), you can increase the speed (25 is
    a good speed, once you get good at the game).
9) When you catch the Fox (with all of the Trail cleaned up), you automatically
   move to the next maze.  However, it waits for your first key-stroke before
   running the maze, so you get a change to plan your strategy.

A hint: in some mazes you want to keep the Tiger as far away from you as
possible, to give you time to get into and out of dead-ends.  In other mazes,
you really want to keep the Tiger just a step behind you, so that he has no
ability to turn and take a "short-cut" (such as when you're running around
in a large "open area" that doesn't have any walls).

Everett Kaser
POB 403
Albany OR 97321
everett@kaser.com
www.kaser.com
1-541-928-5259

