Breakthrough game in Java3d

The game was developed to present Alfa-Beta algorithm.
It's goal is to reach opponent's last (nearest to him) row. Breakthrough is similar to checkers. You beat pieces crosswise (aslant) if you're near opponent's piece.
After knocking other player's piece you place your piece in the same place. You cannot beat pieces in backward "backward" direction (i.e. you cannot go back).

Authors:
Jacek Dalkowski
Bartosz Kosarzycki

Game purpose:
Get to the opponent's last row first.

Game modes:
Computer vs. Computer
Computer vs. Human
Human    vs. Human

Screenshots:

Video:

Game (Java):
http://sites.google.com/site/bkosarzyckiaboutme/BreakThroughGameJava3d.rar

To run the game you need Java3d:
http://sites.google.com/site/bkosarzyckiaboutme/java3d-1_5_1-windows-i586.7z
http://sites.google.com/site/bkosarzyckiaboutme/java3d-1_5_1-windows-amd64.7z

Java 3d developer’s docs:
http://sites.google.com/site/bkosarzyckiaboutme/j3d_tutorial_ch1.pdf

Game’s documentation/report (Polish):
http://sites.google.com/site/bkosarzyckiaboutme/BreakThrough_documentation.pdf