Nepomniachtchi decides to take the game to typical Queen's Gambit Accepted positions. The next moves are very natural and I believed that at some point the game would transpose to some position well known by theory, but it didn't.
1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g1f3  3... d7d5  4. h2h3 Much will be said about this curious and rare choice as early as move four, probably an influence of the creative GM Rapport, one of Ding's seconds. Of course, the idea didn't work in the game, but let's not be too quick to judge its merits. The job of studying openings for those who play White at the highest level is very difficult: you have to come up with ideas that your opponent hasn't studied much with the computer. In chess, as in other sports, it is easier to destroy than to create. For this reason, more and more exotic ideas are sought after. The move has no specific idea, but now we have to think about how the h2-h3 move affects Black's choice for different moves and transpositions, such as 4...c6, 4...Bb4+, 4...Be7, 4... c5 and so on.