What is the footprint the player leaves, in general? Go look at a bricap game on isc and blur your eyes so you can't see the letters. Look at the shape of bri's plays versus his opponents'. (The two-color thing on isc helps this tremendously.) Look at a bunch. Okay, then look at some pakorn games, some other top player games. Look at the shape of what they do. Keep your eyes crossed :-). This is not about open vs. closed. This is about domination.