Is there software that simulates the Tri-D or 3-D chess as seen in Star Trek? I want to try this game without making/buying a board and it is easier to learn to play when the computer can prevent invalid moves. Does any software, preferably freeware, exist which simulates this flavor of chess?
From wikipedia:


  There is software for playing Tri-D Chess; Parmen is a Windows application written by Doug Keenan and available free on his website.


Here are some of the external links for (software) Raumschach and Tri-D chess:


  http://www.pathguy.com/chess/Chess3D.htm
  
  http://www.cosmicchess.com/
  
  http://www.parmen.com/


There is a version available for Android:
https://play.google.com/store/apps/details?id=awfsoft.app.TriDChess