13x13 at IYT rarely fills and 15x15 pro version is even rarer...i've personally never seen it happen....so 15x15 would be a good size...20x20 is more of a "Go" size.
(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)