Look out Kasparov...

... ok, so not really. In my oh-so-copious spare time, I've been trying to up my chess game a bit. I still stink, but I've now beaten jchess on both its lowest and second-lowest settings, all by my lonesome. Doesn't mean I'll be able to do it again, and I still can't see openings well, but it's nice.

Any recommendations for a good starter book on strategy, or some decent chess puzzles?