White to Move

Black has just faltered with 11... Re8 in the Breyer Variation of the Ruy Lopez. Can you see White's best move in reply?

Check out the answer after the fold:

Learning the Tabiyas

OK, you've reached that point. You know how to play, you've been studying your tactics and made great improvements in your performance, and you've settled in on an opening repertoire that you feel comfortable with. You're ready to start with some opening studies beyond just the general principles. So what do you do now?