1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. g1f3  3... f8b4  4. c1d2  4... c7c5 [%c_effect c5;square;c5;type;Interesting;persistent;true] This is an interesting variation of the Bogo-Indian Defense, a favorite of the legendary GM Viktor Korchnoi. I played this move many times during my career, but I must admit that my results were not as good as Korchnoi's and Nakamura's, which is not so surprising, to be honest. 5. d2b4  5... c5b4 It seems strange that Black accepts to keep doubled pawns. After all, isn't this a weakness from a strategic point of view $2 I believe that \"doubled pawns\" is one of the most misunderstood topics in chess, but this philosophical conversation needs to be continued on another occasion. As compensation, the pawn on b4 causes some discomfort in White's position, gaining space and restricting his play on the queenside. It's not surprising that in many cases White plays a2-a3 at some point, voluntarily giving up this so-called strategic advantage. 6. g2g3  6... b7b6  7. f1g2  7... c8b7  8. e1g1  8... a7a5  9. d1d3 [%c_effect d3;square;d3;type;Interesting;persistent;true] A natural plan, intending to bring the knight to d2 and then playing e2-e4. 9... e8g8  10. b1d2  10... d7d6  11. e2e4  11... e6e5 [%c_effect e5;square;e5;type;GreatFind;persistent;true] Black needs to fight for the center. 12. a2a3 This move is probably not the most accurate. 12... b8a6  13. f1d1 [%c_effect d1;square;d1;type;Inaccuracy;persistent;true] I don't like this move. The e4-pawn needs protection, and the rook is more useful on e1. 13... f8e8  14. d4d5 [%c_effect d5;square;d5;type;Inaccuracy;persistent;true] Another concession and now Black has a comfortable game, as the knight gets a dream square on c5. 14... f6d7  15. a3a4 [%c_effect a4;square;a4;type;Inaccuracy;persistent;true] The problem with this move is that it makes Nakamura's life easier, as now he doesn't need to worry about the queenside tension. 15... d7c5  16. d3e3  16... b7c8 [%c_effect c8;square;c8;type;GreatFind;persistent;true] The bishop has done its business and gets ready for a new role, supporting the f7-f5 advance. 17. b2b3  17... f7f5 [%c_effect f5;square;f5;type;Inaccuracy;persistent;true] This move is natural, but a little rushed, as it gives White a plan. It would be more accurate to maneuver with moves like Rf8, Ra7, and maybe even f6-Rf7 before advancing. 18. e4f5  18... c8f5  19. f3g5 [%c_effect g5;square;g5;type;GreatFind;persistent;true] Now the knight can jump to e4 or even e6. 19... h7h6  20. g5e4 The most circumspect, but not the only move. 20... e8f8  21. d1f1  21... a8a7 [%c_effect a7;square;a7;type;GreatFind;persistent;true] I love these rook lifts $1 22. a1e1  22... a7f7  23. h2h4 A good move, gaining space and preparing the typical plan Kh2-Bh3. 23... c5b7 Nakamura probably didn't see a meaningful plan for now and started to shuffle the knight a little bit, since the position is closed and he is allowed to maneuver. 24. g1h2  24... a6c5  25. e1e2  25... c5d7  26. g2h3 [%c_effect h3;square;h3;type;GreatFind;persistent;true] Taking the chance to exchange bishops, which improves White's position. On the other hand, this exchange will be responsible for the defeat later on, as it weakens the f3-square, but to criticize this move because of an error that occurs four moves later would be unfair. 26... f5h3  27. h2h3  27... d7f6  28. e4f6  28... f7f6  29. h3g2  29... b7c5  30. d2e4 [%c_effect e4;square;e4;type;Mistake;persistent;true] A blunder, losing immediately. 30... f6f3 [%c_effect f3;square;f3;type;GreatFind;persistent;true] Nakamura rarely misses tactical chances. 31. e3f3  31... f8f3  32. g2f3  32... c5b3 This is the problem. The b3-pawn falls, and it's the base of White's pawn chain, and the next victims are c4 or a4. 33. f3g2 