The official version comes with a level editor, which is an obvious addition. The interface relies on the detailed online help, which can be dangerous if users habitually overlook the help feature. That keyboard shortcut isn't in any of the pull-down menus. Fortunately, it was okay to use the undo even after the computer had moved. That seemed to improve the game, even in human vs. human matches.
Some pieces can actually pin themselves in a corner with no place to go.
But it shows a nice touch, and illustrates why the game is a little better than its rating might suggest. It takes very little play to get really addicted, because once you can start to see six or seven moves ahead you feel a lot better about yourself. In a word, it's kinda dumb. At novice level, things worked fine. We moved, the computer moved, we both duked it out.