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. 3... c7c5  4. e2e3  4... b8c6  5. b1d2  5... c5d4  6. e3d4  6... c8f5  7. c2c3  7... e7e6  8. f1b5 Not the most popular choice. 8... f8d6  9. f4d6 