user1316: 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?

user1320: 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

1316: <p>I want to try <a href="http://www.chessvariants.org/3d.dir/startrek.html">this game</a> 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?</p>
 1320: <p>From wikipedia:</p>

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

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

<blockquote>
  <p><a href="http://www.pathguy.com/chess/Chess3D.htm" rel="nofollow">http://www.pathguy.com/chess/Chess3D.htm</a></p>
  
  <p><a href="http://www.cosmicchess.com/" rel="nofollow">http://www.cosmicchess.com/</a></p>
  
  <p><a href="http://www.parmen.com/" rel="nofollow">http://www.parmen.com/</a></p>
</blockquote>

<p>There is a version available for Android:
<a href="https://play.google.com/store/apps/details?id=awfsoft.app.TriDChess" rel="nofollow">https://play.google.com/store/apps/details?id=awfsoft.app.TriDChess</a></p>
