1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 Hikaru likes to play fighting openings for the most part, so the Benoni makes a lot of sense. 7. g3 Bg7 8. Bg2 O-O 9. O-O Re8 10. Re1 Nd2 and Bf4 are slightly more popular alternatives, but this is another line. 10... a6 11. a4 Nbd7 12. e4 Ng4 Black tries to get counterplay with the Ng4-e5 maneuver, seen often in both the Benoni and the Benko. 13. Nd2 Nge5 14. Bf1 This looks undesireable, but it is hard to find a better way to guard against Nd3. 14. Qc2 looks more natural, but it runs into 14... c4! followed by Nc5 with excellent play for Black. 14... g5!? Naka's new idea. This looks weakening, but it is imperative to stop White from playing f4 or else he'll simply find himself worse. Also note that White would love to play Nf1-e3 here, but the f1 bishop is in the way. 15. h3 Not an unreasonable response. White wants to discourage g4 ideas. 15... Qf6 16. Qh5 Hikaru criticized this move after the game, but I like it a lot. The queen is a little annoying here, and it allows why to transfer a knight to e3 via d1. 16... Bh6 Strange looking, but Black needs to free up squares for his pieces. 17. Nd1! g4?! This move I really don't like, however. It forces Black to give up the dark-squared bishop, after which he'll be completely reliant on concrete play to make up for his positional deficits. 17... Qg7 followed by Nf6 looks better, with an unclear position. 18. Ne3 Bxe3 19. Rxe3 Qg7 Black has given up his bishop and opened up his king. Matters aren't so clear, however, because White's pieces have a difficult time coordinating. 20. hxg4 Nxg4?! This simple move is actually imprecise. 20... Nf6! 21. Qh1 Nfxg4 This is the point. Black can create counterplay with f5 now, since the f-knight has captured on g4. 22. Re1 f5 21. Rc3?! 21. Re2 is best, as pointed out by Nakamura after the game. The point is that now after 21... Ndf6 22. Qh1 Re5 f2 is defended, so White can simply play 23. Nc4 Rh5 24. Qg2 and Black will struggle to make threats. The best try is 24... Nh2 , but after 25. Nxd6! Bh3 26. Qxh2 Bxf1 27. Qxh5 Nxh5 28. Kxf1 White's pieces and central pawns are more powerful than Black's queen. 21... Ndf6 22. Qh1 Re5! White still has the positional plusses, but Black has a ton of counterplay now. 23. Qf3 Bd7?! Another move Hikaru was extremely disappointed with after the game. It looks natural, but in positions like this precise calculation matters a lot more. Interestingly, these are moments Naka is usually at his best. 23... Qg6! is a better move, immediately putting pressure on e4. The point is that if 24. Bd3 for instance, 24... Bd7 is a better move, since now 25. Rb3 Rh5 and White can't keep his king safe so easily. 24. Qd3?? This unfortunate move throws away the game. 24. Rb3! was best, and the attack on the b7 pawn is surprisingly annoying. Hikaru thought he was worse or even lost here, but it turns out that after 24... Qh6 25. Qg2 Rh5 26. Nf3 Qg7 27. Nh4 The only way to guard e4. It looks as if White will play f3 and consolidate, but Black has the shot 27... Nxf2! 28. Kxf2 Ng4+ 29. Ke2 Re8 with compensation for the piece. Without this line, however, Black would indeed be worse after Rb3. 24... Qh6 25. Bg2 This loses to a nice tactic, but his position was bad anyway. 25. Nf3 Qh5 26. Bg2 Rxe4 and White is busted. 25... Qh2+ 26. Kf1 Nxf2! There might have been a couple innacuracies earlier, but once Hikaru smells his play is very accurate. 27. Kxf2 Bh3 28. Qf1 28. Qf3 Ng4+ 29. Kf1 Qh1+ and Qxg2+ leading to a won ending. 28... Rxe4! The final blow. Black's attack crashes through. 29. Nxe4 Nxe4+ 30. Ke3 Bxg2 The rest is simple. 31. Qf4 Nxc3 32. Qg5+ Kf8 33. bxc3 Re8+ 34. Kf2 Bh1+ and Kayden resigns before allowing Hikaru to give mate. Similar to some other games this tournament, Nakamura made a couple uncustomary errors to give his opponent some chances. Once the big error was made, however, he was his usually unforgiving self. 0-1 [Josh Friedel]