Xjig-2.5 is an X11 jigsaw puzzle
Xjig-2.5 is an is an improved version of the jigsaw puzzle developed by Helmut Hoenig, The original version 2.4 was released July 24th 1996
Some of the changes...
*Option to fix the piece during drag and rotate to 90 deg angles when clicked.
*Choose a different shape for the pieces.
*Sorts out all the edge pieces, and puts them in a separate pile.
There are several gui launchers for xjig.
I love the game but lately I have had problems with pieces turning even though they are not supposed too
A GUI for xjig has been available for a long time now. Xjig Manager. Here on sourceforge Xjig Manager /projects/xjigmanager/
This is an excellent game, but command line interface makes it unusable for most people. I am trying to make a GUI for xjig. Look for xjiggui