Almost Like Last Year

Yu Yangyi plays successfully in Qatar, this is a fact. Last year he won against the heavy-lifted V. Kramnik in the last round to take the trophy in China. This year he had to face another top player- Wesley So:
A game that I liked (ChessBase 13)

[Event "Qatar Masters Open"]
[Site "?"]
[Date "2015.12.29"]
[Round "9.2"]
[White "Yu, Yangyi"]
[Black "So, Wesley"]
[Result "1-0"]
[WhiteElo "2736"]
[BlackElo "2775"]
[Annotator "Bojkov, Dejan"]
[PlyCount "153"]
[EventDate "2015.??.??"]
[WhiteClock "0:02:09"]
[BlackClock "0:03:59"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 {The Nimtzo-Indian remains a reliable weapon for
Black.} 4. Nf3 c5 5. g3 {The aggressive Romanishin line.} cxd4 6. Nxd4 O-O 7.
Bg2 d5 8. Nc2 {Diagram [#] A relativey rare line. Yu forces the swap of the
black bishop.} ({A famous tabia arises after} 8. cxd5 Nxd5 9. Qb3 Qa5 10. Bd2
Nc6 11. Nxc6 bxc6 12. O-O Bxc3 13. bxc3 Ba6 14. Rfd1 Qc5 15. c4 {Bukavshin,I
(2655)-Jakovenko,D (2759) Chita 2015}) ({Both} 8. O-O) ({And} 8. Qb3 {are more
common too.}) 8... Bxc3+ 9. bxc3 Qc7 10. cxd5 Nxd5 11. Nb4 $1 $146 {[%csl Yb4,
Yc3][%cal Gg2a8] Diagram [#] A novelty! White gets rid of the isolated pawn.
The indifferent development does not promise anything to White:} ({Predecessor
(4):} 11. Bb2 Rd8 12. Qc1 b6 13. O-O Bb7 14. Rd1 Nd7 $11 {Cebalo,M (2520)
-Hulak,K (2543) Stari Mikanovci 2008}) 11... Nxb4 {So decided to avoid Yu's
home preparation. He could have accepted the sacrificed pawn} (11... Qxc3+ 12.
Bd2 Qf6 {Diagram [#] to which White can play in two different ways. The more
dangerous one seems to be the pawn sacrifice after} 13. Rc1 $5 ({Not} 13. Nxd5
exd5 14. Bxd5 $6 Rd8 {with pressure along the d file.}) ({But White can aslo
regain the pawn with} 13. Bxd5 exd5 14. Nxd5) 13... Nxb4 14. Bxb4 Rd8 15. Qb3 {
White's pieces are dominating, but a pawn is a pawn. Which one is better will
be revealed by the future practice.}) 12. cxb4 Rd8 13. Qb3 Nc6 14. O-O ({
The black knight can be deprived of the d4 square for a while but} 14. e3 e5
15. O-O Be6 16. Qc3 Rac8 $11 {is just equal.}) 14... Nd4 {[%csl Gd4][%cal
Gc8e6,Ge6f5,Ye6e5] Diagram [#] This is why So rejected the sacrifice. The
centralized knight seems good enough to compensate for the bishop pair.} 15.
Qb2 e5 {The more active approach was also good. The line} (15... Qc4 16. Be3
Nxe2+ 17. Kh1 {seems dangerous for the black knight on e2, but there is a way
out-} Bd7 18. Rfe1 Nc3 19. Rac1 Rac8 {with unclear play.}) 16. Be3 {White
finished the development and wants to make good use of the bishops.} Bg4 $1 {
[%csl Ye2,Rg2][%cal Yf2f3] Diagram [#] Provokes the f2-f3 advance in order to
block the fianchettoe one.} 17. Rac1 Qd7 (17... Nxe2+ $4 18. Qxe2) 18. f3 Bh3 {
Since this bishop is stronger than the one on g2 (at least for the moment)
Black could have also gone for} (18... Be6 19. Rfd1 a5 $11 {when the bishop is
eyeing the a2 pawn.}) 19. Rfd1 Bxg2 20. Kxg2 Qe6 {An excellent square for the
queen.} 21. Rc7 $1 {Diagram [#] Yu squeezed a lot from his novelty. His active
rooks put a lot of pressure on Black's position and his bishop looks better
than the knight. However, Wesley So's creativity should not be underestimated.}
(21. Bxd4 Rxd4 22. Rxd4 exd4 $11) 21... b6 22. a4 Nf5 23. Rxd8+ Rxd8 24. Bf2 ({
Perhaps} 24. Bg1 {was a bit more subtle when the Black pawn is not reahcing e3
with a tempo at least.} e4 25. Rxa7 h5 {although Black is still creating
dangerous threats.}) 24... e4 {[%csl Yg2][%cal Ge4f3] Diagram [#] Black is
losing the battle for the queenside but makes good use of the absence of the
white rook to create threats of his own on the opposite wing.} 25. Qc2 (25.
Rxa7 h5 (25... e3 26. Be1 h5) 26. Qc2 e3 27. Be1 {might transpose to the game.}
) 25... e3 26. Be1 h5 27. Rxa7 {With this move order Yu could have gone for} (
27. Bc3 $1 h4 28. Qe4 Qg6 29. Qg4 $1 {anytime he trades the queens he should
be close to winning.}) 27... Nd4 28. Qe4 Qc4 {[%csl Yg2][%cal Rc4e2] Diagram
[#] So is threatening mate!} 29. Qxe3 $5 {White sacrifices a piece. The exclam
is for the desire to win, the question- for the objective value of the move.
Although as we shall see Yu did not cross the boarder line yet.} ({Objectively
the game should ended in a draw after} 29. Qd3 Qxd3 30. exd3 Rc8 31. Re7 Rc2+
32. Kf1 Nxf3 33. Rxe3 Nxh2+ 34. Kg1 g5 35. a5 bxa5 36. bxa5 g4 37. d4 Nf3+ 38.
Kf1 Nh2+ $11) 29... Nc2 30. Qe7 Nxe1+ 31. Kf2 Qd4+ $6 {In time trouble So errs.
Correct was} (31... Rd1 32. Qe8+ Kh7 33. Qe4+ Qxe4 34. fxe4 Nc2 {Diagram [#]}
35. a5 ({Or} 35. Rxf7 Nxb4 36. Rf5) 35... Nxb4 36. axb6 Rd6 37. Rxf7 Rxb6 {
Is this a win for Black is another question, but at least he had taken away
the 1-0 result from the board.}) 32. Kf1 Nc2 $2 {And this is proper mistake.
He should have forced the draw with} (32... Rf8 33. Kxe1 Qg1+ 34. Kd2 Qd4+ 35.
Kc2 Qc4+ $11) 33. Qxf7+ Kh8 34. Qxh5+ Kg8 35. Qf7+ Kh8 36. Qh5+ Kg8 37. Qf7+
Kh8 38. Kg2 Ne3+ 39. Kh3 Kh7 40. Qh5+ Kg8 {Time trouble is over, Yu has four
pawns for the knight and great winning chances.} 41. Re7 $1 {[%csl Ye3,Ge7,Yg8]
[%cal Re7e8,Re7e3,Gh5f7,Ge7e4,Ge4h4] Diagram [#] A nice move that prepares
various threats like Qh5-f7+ followed by Re7-e4 or the advance of the e pawn.}
Rf8 $1 {The only defense. Everything else loses fast, say} (41... Nc2 $2 42.
Qf7+ Kh7 43. e4 (43. Re4 Qd7+)) (41... Qxb4 $4 42. Qf7+ Kh8 43. Qxg7#) 42. a5
bxa5 43. bxa5 Nd5 44. Qe5 Qxe5 45. Rxe5 Nb4 {[%csl Ga5,Ge2,Gf3,Gg3,Gh2]
Diagram [#] Black survived to the endgame but the value of the pawns grew now.
Yu is still close to winning.} 46. Re4 (46. Rc5 $5) 46... Nd5 47. Rc4 Rf6 48.
Rc5 Rf5 (48... Ne3 49. g4) 49. Rc8+ Kf7 50. a6 Ne3 51. g4 Ra5 52. Rc7+ Kf6 53.
Rc6+ {Perhaps White simply had to push the pawn further} (53. a7 Ra2 54. Kg3 g5
55. h4 gxh4+ 56. Kxh4 Nd5 57. Rb7 Ne3 58. Kg3 {and once that the white pawns
start rolling it should be soon over.}) 53... Kf7 54. Kg3 g5 55. h4 gxh4+ 56.
Kxh4 {Diagram [#] Now the pawns come into motion.} Nd5 57. e4 Ne7 58. Rb6 Ng6+
59. Kg3 Ra3 60. g5 Ne5 61. Rf6+ Ke7 62. Kg2 Nd3 63. Rh6 {In the second
time-trouble Yu misses what seems to me is a win-} (63. f4 $1 Nc5 64. e5 Nxa6
65. g6 $1) 63... Ra5 {So gets one of the pawns back.} 64. a7 Rxg5+ 65. Kf1 Rg8
(65... Ra5 $2 {loses to the typical trick} 66. Rh8 Rxa7 67. Rh7+) 66. Ke2 Ne5
$2 {It is time for Black to go wrong. He should have held after} (66... Nc5 $1
{Diagram [#]} 67. Ke3 Ne6 68. e5 Kf7 69. f4 Rg3+ 70. Ke4 Ra3) 67. f4 Nd7 68.
Ra6 {White's pieces are optimally placed and have room for improvement. The
game is practically over.} Ra8 69. Ke3 Nc5 70. Ra1 Nb7 71. e5 Nd8 72. Ra6 Kd7 (
72... Ne6 73. f5 Nc7 74. Ra5 {followed by a king march to b7 is hopeless.}) 73.
f5 Nc6 74. e6+ Kc7 75. f6 Nb4 76. f7 Kb7 {Diagram [#]} (76... Nxa6 77. e7) 77.
Rd6 (77. Rd6 Kxa7 78. e7) 1-0

What happene din the additional match for the first place between Yu and Carlsen, you can check in this report.

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