Gashimov R7: Déjà vu

[Event "Vugar Gashimov Memorial 2014"] [Site "Shamkir"] [Date "2014.04.27"] [Round "7"] [White "Nakamura, Hikaru"] [Black "Carlsen, Magnus"] [Result "0-1"] [ECO "E20"] [WhiteElo "2772"] [BlackElo "2881"] [Annotator "Ramirez Alvarez,Alejandro"] [PlyCount "104"] [EventDate "2014.??.??"] [EventCountry "AZE"] 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 {The 4.f3 variation, which has different names according to who you ask - including Gheorghiu Variation, Shirov Variation and Kmoch Variation - is a sharp way of meeting the Nimzo and has been on the spotlight recently.} c5 (4... d5 5. a3 Be7 6. e4 dxe4 7. fxe4 e5 8. d5 Bc5 {was the way the game Nakamura-Carlsen went earlier this year in the Zuerich Challenge, a game that the American should have won quite easily. The opening definitely favored him in that game.}) 5. d5 O-O (5... b5 $5 {is an interesting alternative.}) 6. e4 d6 7. Bd2 Nbd7 (7... Re8 {was played by Nakamura himself against Le Quang Liem in 2011.}) 8. Nge2 Ne5 9. Ng3 exd5 10. cxd5 {We are now relatively out of opening. The position resembles a Benoni except that Black's bishop is all the way out on b4 instead of on g7. This has some good things and some bad things. Mainly good is the fact that the bishop can re-route to the g1-a7 diagonal which is quite exposed.} Bd7 11. a3 Ba5 12. Be2 b5 13. O-O c4 {Black is very quick about activating his counterplay. White aims at neutralizing this and counterattacking when all his pieces are placed properly.} 14. Be3 Bb6 15. Qd2 Rb8 16. Nd1 Bc8 17. Kh1 Nfd7 18. f4 Ng6 19. Bxb6 Rxb6 {Both sides are maneuvering to improve their pieces. White has achieved f4, kicking out the knight from f4, meanwhile Black has established his b5-c4 pawn chain and hopes to reinforce it with a powerful knight on c5. Both sides have interesting chances. Black will seek to pressure e4 while advancing his queenside pawn chain. White seeks to create kingside pressure while undermining Black's position in the other flank.} 20. Ne3 Nc5 21. Bd1 Nd3 22. f5 $5 {Quite aggressive. Nakamura uses the fact that the knight cannot really go back to e5.} Ngf4 (22... Nge5 23. f6 $16 {lands Black in serious trouble.}) 23. a4 $1 {Combining play in both flanks proves problematic for Black.} (23. f6 Qxf6 {is not dangerous at all.}) 23... a6 24. Ng4 h5 25. Nf2 ( 25. Rxf4 $5 {Was at least worth consideration, but it is not an easy move to play.} Nxf4 (25... hxg4 26. Rxg4 Ne5 27. a5 $1 Rb7 28. Rg5 $14) 26. Nh6+ gxh6 27. Qxf4 Qg5 28. Qf2 $1 {The rook on b6 is hanging.} Rb7 29. Nxh5 $16 {with very obvious compensation, though it's hard to say over the board how much that is, further analysis seems to show it is too much for Black to retain all of his material.}) 25... Qf6 26. Nxd3 (26. Nxh5 {was another possibility.}) 26... Nxd3 27. Qe3 Rb7 28. Nxh5 Qh6 29. Qxh6 gxh6 {White has emerged up a pawn, but Black retains very serious compensation. His knight on d3 is quite powerful and with the queens off the board the knight on h5 looks rather silly. If White can consolidate he will still have a rough time trying to push his pawns forward.} 30. axb5 axb5 31. Bc2 $5 {Not one to sit back passively, Nakamura aims to create kingside play at the cost of his queenside.} Ne5 $5 { Seems passive, but it does not allow counterplay.} (31... Nxb2 32. Rf3 b4 33. Rg3+ Kh8 34. Ra6 $5 {Is a very hard to assess position. Carlsen must have been afraid of something like this, in which White sacrifices his bishop for two pawns but retains control over the rest of the board.}) 32. Ra6 Rd8 {Somewhere starting now Nakamura starts to go wrong. Maybe bringing his knight back was not the best idea, and it was more important to simply secure the a-file by doubling on it.} 33. Ng3 $2 {The start of a bad idea.} (33. Rfa1 b4 34. b3 Rb8 $1 $44) (33. Rb1 $5 b4 34. Ra8 b3 35. Bd1 Nd3 36. Kg1 {Black retains compensation, but White's king is now inching into the fight and it would consolidate the position if it reached c3.}) 33... Rb8 34. Ra7 b4 35. Ne2 Bd7 36. Rfa1 Bb5 37. h3 {Now Black is far too active and the knight is not in a good square.} (37. Nd4 b3 38. Bd1 c3 39. bxc3 b2 40. Rb1 Bd3 41. Bc2 Bxc2 42. Nxc2 Rdc8 {is already losing for White.} 43. Ra3 Nc4 44. Ra2 Rb3 $1 $19) 37... Rdc8 38. Kh2 {White's last two moves indicate that he has no plan and that Black will surely succeed on the queenside.} c3 39. Nd4 cxb2 40. Rb1 Rc4 41. Nxb5 Rxc2 42. Nd4 Rd2 $6 (42... b3 $1 {Was stronger and more direct. The threat of Nc4-d2 is unstoppable.} 43. Nc6 Nf3+ 44. Kg3 Nd2 {The big difference with the other variation is that now d2 is vacant for the Black knight.}) 43. Nc6 Re8 44. Ra4 Nd3 45. Nxb4 Nf2 {Black still holds a big initiative and the pawn on b2 is still powerful.} 46. Ra2 Nd1 47. Rxd1 Rxd1 48. Rxb2 Rxe4 {White sacrifices material to get rid of his problems, but he is now simply down an exchange without compensation.} 49. Nc6 Kg7 50. f6+ Kxf6 51. Rf2+ Kg6 52. Nd8 Re8 (52... Re8 53. Nxf7 Rxd5 {traps the knight.}) 0-1