1. e2e4  1... e7e6 Yesterday it was the London System and today it's the French Defense, which was missing for a long time in world championship matches. Did Ding Liren finally show the best opening repertoire for chess players of all levels $2 2. d2d4  2... d7d5  3. b1d2 Nepomniachtchi decides not to test his opponent in the most critical lines, instead aiming for a small and safe advantage. 3... c7c5 Definitely Black's best move in this position. 4. g1f3  4... c5d4 