You're doing something very wrong. Defending in a dropless game with a center
? And doing good?
Center sets are all about attack, you simply can't defend succesfully in a grey game in general, and especially so when using a center. So yeah, stop defending, and focus more on offense. If other player just turtles, you've basically already won the game. If you can't break in immediately, just improve your positioning gradually, try to induce weaknesses. They can't do anything at all after they commit themselves to complete defense because counterattacking at that point would create serious gaps in their camp. Sooner or later there will be an opportunity to kill something.
I dont know how many games i've won like that. Its the most pleasant type of game imaginable, you simply can do whatever you want with your opponent. The only hope for them is you overextending. I honestly dont see why would someone commit themselves to such a torture
.
And here's one game from GS4, where my opponent decided to defend. He usually gives me quite good games, but this time it was just a cakewalk.
Skev21 vs lemon on Vimeo
Hope it helps somewhat.