Hrqls: That was the phrase I used to describe the strategy which I find to work best for me. In a nutshell, it means allowing your opponent to dominate the board, while keeping your own pieces to a minimum. Once roughly 50% of the board is filled, you can severely limit your opponents options for moves because there are so few of your pieces to "convert" or "trap". The best example is a game in which my opponent has taken all the side spaces, but has left 4 empty spaces in a corner. If I can form a diagonal line with a piece in the space diagonal to the corner, and my opponent's only available moves are the two spaces adjacent to the corner, I will get the corner... And of course everything else will follow. If you look through my game history, I use this strategy in almost every game and it has done quite well for me. :-)
Invite me to a game for a firsthand lesson in it. I'll explain my moves as we go.
John Baker