The main thing are the signs characters. The pentagonal shapes are nice but secondary, because the orientation of the characters shows the owners.
The above example is exactly what I think about.
[Edited by playBunny to make the link work. it gives a list of recorded matches. Then click any of the Java links to see the board and play through the game.]
(hide) If you click on a person's name and then click Finished games you will have a list of games that have been completed, then click on the name of the game to get a summary of all of these games, then click on the name of the game again and you will have a game to view and analyze. (Servant) (show all tips)