after 33.Nxf6+ Kf7 34.Ng5+ Ke7 35.Bf8+ Kd8 36.Nxh7+ Qxh7 37.Qxh7 Rxf8 38.Qb7 which should win for white

But 35.Ne6! threat Bh8 folloewed by Qg7# stronger than 35.Bf8+:

[avoiding transfer to positional game.]

5. Bd3

[sideline rarely played on the top level, Caruana vs Topalov, 2012 ]

After 10 moves we have a transposition into hybrid of Breyer/Steinitz Ruy Lopez. Therefore Harikrishna achieved his goal of steering the game into positional battle. White position is favorable.

13. d5

[again, Harikrishna steers the game into more positional direction while planning kingside attack.]

13. ...g6?!

[Nakamura wants to prevent Nf5. I am not a big fan of weakening castling in this manner. This weakness will prove fatal in the end.]

15. ...c4

[opening of b-file will not be beneficial to black although it is not easy to give a good advice here to black.]

17. ...Qc7?!

[dubious sacrifice of pawn to diffuse white's advantage will backfire.

17. ...Qa5
18. Rb4! Rec8

looks more solid though white retains clear advantage with 19. Nd2]

19. ...Na3?

[that was Nakamura's plan but it is not a good plan since black has no compensation for a pawn and his bishops are ineffective. Exchanging the most active minor piece is a dubious idea.]

20. Rb3

[20. Rb4 Nxc2, 21. Qxc2 Reb8, 22. Be3 Ba6, 23. Rxb8 Rxb8, 24. Ra1 Qc4 and after queen exchange white would still have a lot of technical problems to convert the game into a win. Harikrishna's move is more natural.]

21. ...Nd7?!

[this knight is going nowhere while black has serious problems activating his bishops.]

26. ...Qc8

[Sad move but there is nothing better since 26. ...Rb7, 27. Rxb7 Qxb7, 28. c4! Qc7, 29. Nd2 once again paralyzes black bishops.]

28. Qc1

[foxy move underlining the weakness of black kingside. It is interesting how quick the game will now resolve as Nakamura disregard white's attack.]

29....Qc4??

[Losing move, 29. ...Ra8, 30. Rxa8 Qxa8, 31. Bxf8 Qxf8 and white has a long way to try to win the game with pawn up. Nakamura has no patience for that and simply disregards king safety.]

30. Nh5!

[This seals the game, very nice although typical attack in closed Ruy Lopez variations. White attack is too fast and knight cannot be taken, for example: 30. ...gxh5, 31. Qg5 Kh8, 32. Qf6+ with mate]

31. ...Qxa7

[Once again knight cannot be taken because of Qg5 with a mate in a few moves]

======

Such an easy game in which Harikrishna simply steered the game into positional and waited for Nakamura to make impatient moves which he duly did.

1. He is not well prepared in the openings.

2. He wants to play tactical at any cost even while choosing inferior openings to get there.

3. When the opening does not go his way he loses patience.

4. He disregards safety of his king assuming that his opponent is not going to be as astute in the attack as he is. [This of course could be just an oversight in this game but I do have this impression of him in many other games.]

This is all old stuff for Naka, old weaknesses which were not remediated in the past. He is a tremendous talent but these weaknesses are preventing him from reaching the very top. As an attacker he is second to none but he has no ability to adapt to inferior game and is impatient in defence when such a game happens.

1. He is not well prepared in the openings.>

Funny, when you're Magnus thats a plus!!!

I guess Jason already said it best:

Well, everything is relative to the strength of a player, of course. From point of view of a lesser player than Nakamura is he is strong in every aspect of the game. However, my impression is that when he is put in a stranglehold (as in this game) where no active game is available he plays rather weak chess (compared to his overall strength). Of course, this tournament is a debacle for him and I am sure he can play better.