In this week's lesson, Dennis presents the final installment of his epic series on the Ruy Lopez. He presents, the Quick Ruy 19, covering the 9.c3 Nc5/Be7 lines. He covers a lot of the transpositional possibilites, gives an overview of the theoretical landscape, and suggests a few small novelties. At last we have everything the aspiring Ruy Lopez player could ever want! As always, let us know what you think.