You can access it at:computer.judtho.com/ddff2_blackcomp
Currently, the rule that Pawns can jump over other Pawns is not available nor is Pawn Promotion. Also, sometimes the programme does not allow some Prince moves but otherwise it works relatively well. The Computer Opponent's strength is that of a Beginner so most players should find it easy to win. Challenges for stronger players include trying to win in the fewest moves possible and playing to get the Computer to win in the fewest moves possible. My records for these are 7 and 5 moves respectively.
To get started, click on Default Assembly (unfortunately the other buttons are inactive).
To move pieces, click on the piece to see where it can go. If you change your mind, unclick the piece and click on another one. Please note that you cannot take back your moves.
Knatching, multiple captures (for the Princess and Prince) and distant captures for the Knight are all available. To perform these special captures, click on Begin Special Capture, select the pieces to be captured, and then click on End Special Capture.