You have to love the Chigorin. Black's play is usually on a wire, but if you have the intincts for it (and you've done a mass of prep), it's got to be a hoot. Here Stripunsky scores with it against Gurevich. Interested? See The Chigorin Defense by Morozevich, who's also the opening's leading proponent. The book is uneven, but there's nothing more modern available at present. As always, you can get the daily game scores for all major tournaments at TWIC, including the U.S. Championship.