1. d2d4  1... g8f6  2. g1f3  2... d7d5  3. c1f4 The long-awaited moment has arrived when the London System makes its first appearance in a world championship match. If I have criticized London players, here I demonstrate my complete regret for doing so. This is not a very common weapon in Ding's repertoire, but he has used it before, and Nepomniachtchi said he expected it at some point.