Andreikin Joins the Nakamura in the Lead

Today's round in Tashkent was very interesting. Two games were decisive and I chose to annotate the sharper one for you.
A game that I liked (ChessBase 12)

[Event "Tashkent FIDE GP"]
[Site "Tashkent UZB"]
[Date "2014.10.27"]
[Round "6"]
[White "Andreikin, D."]
[Black "Karjakin, Sergey"]
[Result "1-0"]
[ECO "A46"]
[WhiteElo "2722"]
[BlackElo "2767"]
[Annotator "Bojkov, Dejan"]
[PlyCount "67"]
[EventDate "2014.10.20"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 c5 4. Nc3 {Diagram [#] The choice of the opening
was quite a shock for me. It is not often that we see this position in a top
grandmaster game. I would not be surprised to see it in the game of FM Stuart
Fancy of Papua New Guinnea whom I coached at the last two Olympiads. Or in a
game of my former teammate FM Bonno Pel. They both love to start their games
with 1.Nb1-c3} cxd4 {There are plenty of continuations for both the sides that
might leave to different openings.} ({For instance} 4... d5 5. e4 dxe4 6. Nxe4
Nbd7 {will lead to the Rubinstein French and have been tested already.}) 5.
Qxd4 ({Now White could have chosen a Sicilian approach with} 5. Nxd4 Be7 6. e4
d6 {with a Scheveningen type of postion in Koneru,H (2600)-Hou,Y (2591)
Antakya 2010}) 5... Nc6 6. Qh4 Bb4 ({Another Sicilian position appeared after:
} 6... h6 7. e4 Rg8 8. Bxf6 gxf6 9. O-O-O a6 {in Gurgenidze,B (2461)-Kapengut,
A (2455) Moscow 1981}) ({Most of the people prefer the solid} 6... Be7 {I also
have the feeling that this was more in the spirit of the solid Karjakin.}) 7.
e4 Bxc3+ $146 {This is what the bishop came for on b4.} ({The only predecessor
saw} 7... d6 8. Bd3 e5 9. O-O Bxc3 10. bxc3 $14 {Ornstein,A (2440)-Schneider,L
(2425) Uppsala 1985}) 8. bxc3 h6 9. Bd3 ({The endgame is good for Black} 9.
Bxf6 Qxf6 10. Qxf6 gxf6 $11) 9... d6 {Black's plan is to build dark-squared
blockade.} 10. Rd1 {Andreikin brings the rook into the action and prepares
various disovered attacks.} Rg8 $1 {A very sensible choice by Karjakin. I
suspect that the memories of his last game were too fresh to allow the
following play:} (10... O-O 11. Bxh6 $5 {Diagram [#] Two days ago Sergey lost
thanks to the same sacrifice to Jobava (with reversed colors!)} gxh6 12. e5 {
with the idea} (12. Qxh6 {also interesting is} Ng4 (12... e5 13. Ng5) 13. Qh5
Nce5) 12... dxe5 13. Qxh6 $1 {This is much better than} (13. Bh7+ Nxh7 14. Rxd8
Rxd8 15. Qxh6 e4) 13... Qe7 14. Ng5 e4 (14... -- {The threat is} 15. Bh7+ Kh8
16. Be4+ Kg8 17. Rd3 $1 {and checkmate.}) 15. Bxe4 Ne5 16. Bh7+ Kh8 17. f3 $18
{this deprives the black knights of the g4 square and the attack is
unstoppable.}) 11. Be3 e5 {The outcome of the opening is an approximately
levelled game. White owes the bishop pair, but Black had developed his pieces
in accordance to Capablanca's principle- on the different color of the bishop
that he owes.} ({In fact, Karjakin could have equalized completely with the
move:} 11... g5 $5 12. Qxh6 ({The queen has no retreat square} 12. Qg3 $4 g4
13. Nd2 Nh5 $19 {[%csl Rg3][%cal Rh5g3]}) ({It is doubtful that the rook and
the pawns are better than the light pieces in the line} 12. Nxg5 hxg5 13. Bxg5
Rxg5 14. Qxg5 Bd7) 12... Rg6 13. Qh8+ Rg8 $11) 12. Bb5 Qc7 {Probably the first
inaccuracy in the game. Black could have played more aggressively with} (12...
Qa5 13. Bxc6+ bxc6 14. O-O (14. Rxd6 $2 {is bad to} Qxc3+ 15. Rd2 Ba6 $1) 14...
Ba6 ({Not} 14... Qxc3 15. Rxd6 $16) 15. Rfe1 Rd8 {Black is solid in the center
and Andreikin has to prove that his queen is doing something on the king's
side.}) 13. Nd2 Be6 14. f3 {To bring the queen in the game after Qh4-f2.} Qa5 (
{One more way to equalize is} 14... O-O-O $5 15. O-O ({The pawn is untouchable
} 15. Bxc6 Qxc6 16. Bxa7 $2 b6) 15... d5 $1 $11) 15. c4 {Diagram [#]} Ke7 $6 {
[%csl Ye7][%cal Rc4c5] It is true that sometimes Black can leave the king in
the center in the Sicilian, but probably this is not the case here. White will
be always threatening to open the king with c4-c5.} ({White has ample
compensation for the pawn in case of} 15... Qxa2 16. O-O Qxc2 17. c5 dxc5 18.
Rc1 Qa2 19. Ra1 Qb2 20. Rfb1 Qc3 21. Qf2) ({But} 15... a6 16. Bxc6+ bxc6 {was
to be preferred.}) (15... Rc8 {was also OK.}) 16. O-O g5 $2 {This is too much.
Now Dmitry will have a chance to attack both flanks. He will do it flawlessly!}
17. Qf2 Rgd8 {The c4-c5 breaks are already in the air:} (17... Nh5 18. Nb3 Qc7
19. c5 $1 $16) ({Or even worse for Black} 17... a6 18. Nb3 Qc7 19. Bb6 Qc8 20.
Bxc6 Qxc6 21. Na5 Qc8 22. c5 $1 $18) 18. h4 $1 {All of a sudden, the strike is
coming from the other side. But this is something taht the bishops enjoy-play
on two flanks.} Nh7 19. hxg5 hxg5 20. g4 $1 {[%cal Gg1g2,Gf1h1,Rh1h8,Rh8h1]
Consistent play on the flank. Andreikin prepares the next maneuver.} (20. a4 $5
{with the idea c4-c5 was also very good.}) 20... f6 21. Kg2 Nf8 {If the knight
could fly Black would have sealed the file with Nf8-g6-h4. Alas, he is one
tempo down.} 22. Rh1 Bf7 ({No human being will think about the pawn on a2 in
this situation} 22... Qxa2 23. c5 d5 24. exd5 Bxd5 25. c4 Be6 26. Ra1 Qc2 27.
Ba4 Qg6 28. Ne4 {with total control for White.}) ({After} 22... Ng6 {the
follow up might be} 23. Rh7+ Bf7 24. Nb3 Qxa2 25. Qd2 {with too many threats.
The main ones are Qd2-c3 and Rd1-a1 to trap the queen and the instant blowing
of the house with Be3xg5.}) 23. Nf1 $1 {[%csl Rf5] The bishop had covered the
king, but released the f5 square. This is where the knight is heading for!} Bg6
24. Bd2 {[%csl Rd5,Rf5]} Qb6 25. Ne3 {Or maybe for the d5 square?} Kf7 {
Diagram [#]} 26. Qe1 $1 {[%csl Ge1][%cal Ge1a5,Ge1h1,Gh1h8] Diagram [#]Grand
play! The queen is moving away from the trade, supports the bishop on d2 and
is ready to attack on both flanks.} Ne6 27. Nf5 Qc7 ({The utility of the white
queen becomes obvious in the line} 27... Ncd4 28. Nxd4 Nxd4 29. Ba5 $1 Nxc2 30.
Qd2 Ne3+ 31. Kg3 Qc5 32. Rde1 b6 (32... Nxc4 33. Bxc4+ Qxc4 34. Bxd8 Rxd8 35.
Rc1 Qe6 36. Rc7+ Rd7 37. Qa5 $18) 33. Bb4 Nxc4 34. Bxc5 Nxd2 35. Bb4 Nxe4+ 36.
fxe4 {White is close to winning but I suspect this was Sergey's best bet.}) 28.
c5 $1 {The beginning of the end. Black's position quickly detoriates on the
open diagonals.} dxc5 29. Bc4 b5 ({One of the threats for White is to trade on
e6 and bring the queen on c4-} 29... Rh8 30. Bxe6+ Kxe6 31. Qe2 Rxh1 32. Qc4+
Kd7 33. Qd5+ Kc8 34. Qe6+ Kb8 35. Rxh1 $18) 30. Bd5 {This move only
demonstrates how helpless Black is.} ({White could have won more forcefully
with} 30. Bxe6+ Kxe6 31. Rh6 Rg8 32. Ba5 $1 Qxa5 (32... Nxa5 33. Rd6+ Kf7 34.
Qd2 Rad8 35. Qd5+ {and mate in three.}) 33. Rd6+ Kf7 34. Qh1 $3 {with the
unstoppable Rh6-h7! or Rh6xg6!} Qb6 35. Rxg6 Rxg6 36. Qh7+ Kf8 37. Qxg6 {and
mate.}) 30... Rac8 31. Rh6 Ncd4 {Diagram [#]} 32. Ba5 $1 {[%csl Yc7,Yd8]
Beautiful finish!} Nxc2 ({Andreikin would not be interested in the exchange in
case of} 32... Qd7 {but in the king} 33. Qh1 Rf8 34. Rxg6 Kxg6 35. Qh5#) 33.
Qh1 Qxa5 34. Rh7+ {The moral of the game- if you have the advantage of the
bishop pair, try to attack on the color of the bishop that the opponent does
not have!} ({It is mate in three.} 34. Rh7+ Bxh7 35. Qxh7+ Kf8 36. Qe7+ Kg8 37.
Qg7#) 1-0

Andreikin is now joint leader with Nakamura.

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