What SHOULD have been in the ARC file:

 JIGSAW.PRG      The program
 JIGSAW.PC1      The title screen
 JIGSAW.MAN      This file

That's all.

ANOTHER Jigsaw program? AREN'T THERE ENOUGH?

Very probably. But hey, I was bored.
Anyway, you can run JIGSAW from LOW RESOLUTION only. After you run the
program, the title screen will load.
(A note on the title screen: it is mostly from a picture drawn by
someone else, but I made extensive modifications on it, as you will
notice.)
After spending a few paltry seconds gazing at the title screen, press
either mouse button to proceed. You will then be asked to select a
file--either a DEGAS low res picture (.PI1), a DEGAS compressed low
res picture (.PC1), or a NEOchrome picture (.NEO). The picture you
provide is what JIGSAW will use as the puzzle.
Then you will be prompted whether you want a hard or easy puzzle. I
suggest trying an easy puzzle to get used to the game. After choosing
a difficulty, JIGSAW will read your picture.
JIGSAW will spend a minute or so digesting the file. Once it finishes,
you will be presented with the puzzle.
To solve the puzzle, you swap pieces of the picture around. Press the
left button (and hold it down) on one of the pieces you want to move.
Drag the mouse until the flickering box is over the square you want to
drag the piece to. Release the button. The two pieces (the first one
you selected and the one you ended up pointing at) will switch
places.
You may also press the right button on a square to rotate it 90
degrees counter-clockwise. (Yes, most of the pieces HAVE been rotated;
you will have to figure out which way they go.)
If you need to look at the original picture, press the space bar to
see it for a half a second.
If you need to wimp out and not finish the puzzle, press any key
besides the space bar to quit.
When the puzzle looks exactly like the original picture, JIGSAW will
congratulate you and tell you how long it took.
If you quit or solve the puzzle, you will be asked if you would like
to do another puzzle. If you say yes, you will once again be asked
what picture you wish to use. If you say no, you will see the title
screen again for a short while, and then you will be returned to the
desktop.

If this is not clear enough, I am sorry, but I am writing this at
about 4 AM, right after I finished the program. If you have questions,
E-mail Valox on the Crypt (402) 571-0152, or E-mail Damien Jones on the
Binary Express (402) 734-5231 or DRBBS (402) 896-3537. Enjoy.