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) When moving in a game you can choose which one will show up next by selecting the appropriate option in the list next to the submit button. (pauloaguia) (show all tips)