[Event "ACCENTUS Biel GMT"] [White "Mamedyarov, Shakhriyar"] [Black "Carlsen, Magnus"] [Site "Biel SUI"] [Round "9"] [Annotator "Golubev"] [Result "1-0"] [Date "2018.07.31"] [WhiteElo "2801"] [BlackElo "2842"] [PlyCount "113"] 1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 0-0 5. Nc3 d6 6. Nf3 c5 (6... Nc6 7. 0-0 e5 {was played by Navara against Georgiadis in Round 2.} )7. 0-0 Nc6 $1 8. e3 { Surely, not a critical move.} ({The Yugoslav system of the King's Indian has been only rarely seen in practice of both opponents and in these games were tested the main lines with} 8. d5 Na5 $1 9. Nd2 )({and} 8. dxc5 dxc5 )d5 $5 {A curious idea, which has been tried only a few times in the past: Black claims that White's extra move e2-e3 is not useful at all! 'Unless there's some concrete refutation, d5 is just a very nice move' - Carlsen.} ({In Botvinnik-Najdorf, Amsterdam 1954, Black opted for a probably playable} 8... Bf5 $5 )({Black's important options include a forcing} 8... Bg4 9. h3 Bxf3 10. Bxf3 Nd7 {and if} 11. d5 Na5 $1 $132 {(first occurred in Moiseev-Vasiukov, Erevan 1954)} )({and} 8... cxd4 9. Nxd4 (9. exd4 d5 $1 10. c5 Ne4 $11 )Bg4 $5 {. In other words, Black has a really wide choice.} )9. cxd5 ({After} 9. dxc5 $5 dxc4 10. Qa4 {(as in Behrensen-Shocron, ARG-ch Buenos Aires 1955) Black can play} Be6 11. Ng5 Qc8 $5 {maybe.} )Nxd5 10. Nxd5 Qxd5 11. Ne5 Qd6 ({Probably sufficient for equality is} 11... Qd8 $5 12. Nxc6 bxc6 13. Bxc6 ({or} 13. dxc5 Ba6 14. Re1 Qxd1 15. Rxd1 Rfd8 $44 )Bh3 14. Re1 Rb8 15. d5 Bxb2 16. Bxb2 Rxb2 $11 )12. Nc4 $1 $146 Qc7 $1 13. d5 Rd8 14. Bd2 ({Black is OK after} 14. Qe2 Ne5 15. e4 Bg4 16. f3 $140 Nxc4 $1 17. fxg4 Bd4+ 18. Kh1 Ne5 19. Bf4 c4 $5 $11 )Nb4 $2 {Overpushing.} ({White would have had at best a marginal advantage after} 14... Ne5 15. Nxe5 Bxe5 )({or} 14... b5 $5 15. dxc6 (15. Na3 Ba6 $1 $132 )bxc4 16. Qe1 a5 17. Bc3 )15. Bxb4 $2 ({Quite unpleasant for Black would have been} 15. e4 $1 b5 16. Bf4 $1 Qb7 ({if} 16... e5 17. d6 $1 Qc6 18. Nxe5 Qxd6 19. Qxd6 Rxd6 20. Nxf7 $1 $16 )17. Ne5 $1 {and if} (17. Na5 $2 Qb6 18. Nb3 c4 19. Be3 Qc7 $132 )g5 $6 {a blow, which is easy to underestimate:} 18. Nxf7 $1 ({rather than} 18. Qh5 $6 gxf4 19. Qxf7+ Kh8 {where Black is OK} )Kxf7 19. Bxg5 $16 {with the idea of 20.a3!, 21. e5. It seems that both opponents have missed this.} )cxb4 $132 {Now Black has sufficient counterchances in the double edged fight.} 16. Rc1 a5 17. a3 $5 bxa3 18. bxa3 a4 $1 19. Qd3 ({An alternative was} 19. Qd2 $5 Qc5 $1 ({not } 19... Rb8 $2 20. Qb4 ))Bf5 {"A massive oversight" - Carlsen. But this move is hardly too bad in fact.} ({Instead,} 19... Rb8 $1 $132 {with the idea of ...b5 was quite a good option.} )({Indeed, an immediate} 19... b5 $2 {is wrong due to} 20. d6 )({After the game Magnus mentioned another idea,} 19... Bd7 {(?!)} 20. d6 exd6 21. Ne5 $1 {. Let's continue:} Qa5 22. Nxd7 Rxd7 23. Bd5 {and White has an initiative for the pawn, Black's position is unsafe.} Bb2 24. Rc4 $5 Bxa3 25. Rb1 b5 $140 26. Rg4 b4 27. h4 Re8 $1 28. h5 $1 $44 )({One more option was} 19... Ra6 $5 {(Carlsen)} 20. Qb1 $1 (20. Rb1 $2 Rc6 $1 21. Rfc1 Rc5 $17 ))20. e4 $1 Bd7 21. Qe3 $1 {Missed by Magnus.} Ra6 $1 22. e5 b5 23. d6 Qb8 $1 24. dxe7 Re8 25. Rfd1 ({More dangerous than} 25. Nd6 Rxe7 )Rxe7 26. Qc5 $1 Qf8 $2 {A serious mistake.} ({Correct was} 26... Bf8 $1 {where White does not have much after} 27. Nd6 )27. Ne3 $1 {A move, missed by the world champion. Black is in trouble.} Be6 (27... Bxe5 $2 {loses to} 28. Rxd7 $18 )({ And} 27... Qe8 28. Bb7 (28. f4 $5 $16 )Rae6 29. Nd5 Rxe5 30. Nxe7+ Rxe7 { is obviously difficult or possibly just bad for Black.} )28. Qxb5 {So, White grabbed a pawn, but Black is able to resist.} Raa7 29. Nd5 Bxd5 30. Rxd5 Reb7 31. Qd3 Rb8 32. h4 Qe8 $6 33. Qd4 $6 Qe7 $6 34. f4 $6 Bf8 35. Kh2 Rab7 $6 36. Qxa4 $6 Qxa3 37. Qxa3 Bxa3 {After the imprecise play from both sides, in a kind of position where it's hard to find the 'computer moves', Mamedyarov has allowed Black to enter the endgame with a fair chances for a draw. But at the same time White avoided any practical risks.} 38. Rcd1 Be7 39. Kh3 Rc7 40. h5 gxh5 $5 41. f5 f6 42. e6 Rb3 43. Rd7 Rbc3 44. Ra1 Kg7 45. Ra8 Kh6 46. Re8 Bb4 47. Rb8 Be7 48. Be4 R3c4 49. Bd5 R4c5 50. Be4 Rc4 51. Bd5 R4c5 52. Rb7 Rxd7 53. Rxd7 Ra5 $2 ({Instead,} 53... Bf8 $1 {would have been correct.} )54. Bc6 $2 ({ After} 54. Bc4 Ra4 (54... Ba3 $2 55. e7 Re5 56. Be6 $18 )55. Rxe7 Rxc4 56. Re8 $1 {a rook endgame is probably wining for White in the long run. After} Re4 {,} 57. Rg8 $1 {should be played, preventing ...Kg5 and preparing g3-g4.} )Ba3 $8 55. Rf7 ({Here} 55. e7 $2 {is answered by} Re5 $11 )Re5 ({After the game opponents discussed} 55... Rxf5 56. e7 Bxe7 57. Rxe7 Rc5 {followed by. ..f5. And were unsure about the assessment. Yes, chess is complex.} )56. Kh4 ({ Carlsen had anticipated} 56. Rxf6+ {. White can't win there after} Kg5 57. Rf7 Bc5 ({or} 57... Bd6 ))Bc1 $4 {A terrible blunder.} ({Correct was to forget about the f6 pawn and wait:} 56... Bc5 57. Rxf6+ Kg7 58. Rf7+ Kh6 {. Then, for example,} 59. g4 Bf2+ $1 60. Kh3 Re3+ 61. Kg2 Bh4 62. gxh5 Kxh5 $1 { and all what White can achieve here is the ending R + B vs R.} )57. e7 $18 ({ Not} 57. Rxf6+ $2 Kg7 58. Rf7+ Kh6 59. e7 $140 Bg5+ )1-0