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Magnus Carlsen vs Hikaru Nakamura
Biel Chess Festival (2012), Biel SUI, rd 1, Jul-23
Sicilian Defense: Chekhover Variation (B53)  ·  1/2-1/2

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 7 OF 9 ·  Later Kibitzing>
Jul-23-12  boz: 31...Kg7. Well this must be the position Nakamura has been anticipating going back to 25. Rxc1 Rf7 .
Jul-23-12
Premium Chessgames Member
  Eyal: <Gypsy> Sounds reasonable - 24...Rfc8 looks nice, but Black doesn't really have anything on the c-file; White can simply move the rook away and start operations on the K-side. I'm not saying it's winning for White, but maybe Nakamura thought that exchanhging pieces is a greater priority.
Jul-23-12  talisman: ♕c2?......
Jul-23-12  Ulhumbrus: 33 h4 begins the plan of h5 and hxg6 so as to make the advance e4-e5 a potential threat on g6

33 f4 begins the plan of Bc4 and f4-e5 when in reply to a double capture on e5 the move d5-d6 both attacks the bishop on c7 and the rook on f7

33 f4 also begins the plan of Be2 heading for e6

White seems to have numerous potential threats while Black seems to have none. However that is not enough. White has to select a potential threat which Black cannot answer satisfactorily.

Jul-23-12  bubuli55: There goes that h4 :) at the right time !
Jul-23-12  Ulhumbrus: The move 33..Rf8 suggests 33 Qc2. However Black can then offer an exchange of queens by 33...Qc5.
Jul-23-12  Marmot PFL: With rooks gone Nakamura should be able to draw this.
Jul-23-12  haydn20: One would think the R exchange would help Black. If so maybe 31. Qd2 was better.
Jul-23-12  bubuli55: We may see some haymakers now :)
Jul-23-12
Premium Chessgames Member
  watwinc: White's Queen can get to the kingside faster than Black's - maybe scope for a break there?
Jul-23-12  okba1: no draws with MAGNUS
Jul-23-12
Premium Chessgames Member
  Eyal: Looks like Nakamura made a tactical mistake by trying to force the exchange of the second pair of rooks; now Black is in trouble after 35.Qh6+ Kg8 36.e5! dxe5 37.h5! (e.g. 37...f5 38.d6!! Qxd6 39.Bc4+ and mate).
Jul-23-12  botvinnik64: What about Qxb2
Jul-23-12  mundi8: 30.Qh6+ Kg8 31.h5 ?
Jul-23-12
Premium Chessgames Member
  Eyal: ...But Carlsen missed the opportunity he got on move 35.
Jul-23-12  bubuli55: This is calculations to the max. Shall W go in? Or happy with the draw?
Jul-23-12  haydn20: < Eyal: Looks like Nakamura made a tactical mistake by trying to force the exchange of the second pair of rooks; now Black is in trouble after 35.Qh6+ Kg8 36.e5! dxe5 37.h5! > 35. Qh6+ Kg8 36. e5 Qxb2+ maybe
Jul-23-12
Premium Chessgames Member
  Eyal: <haydn20: < Eyal: Looks like Nakamura made a tactical mistake by trying to force the exchange of the second pair of rooks; now Black is in trouble after 35.Qh6+ Kg8 36.e5! dxe5 37.h5! > 35. Qh6+ Kg8 36. e5 Qxb2+ maybe>

After 37.Kh3 Black has no more checks, and h5 (after dxe5 or fxe5) is going to be decisive.

Jul-23-12  awfulhangover: 35.Qh6+ Kg8 36. Qxb2+ Kh3 37. Qa1 was not good for white
Jul-23-12  Ulhumbrus: One way for Black to lose is 35 Qh6+ Kg8 36 h5 Qxb2+ 37 Kh3 Qf2 38 hg hg 39 Qxg6+ Kh8 40 e5. It can be seen that White is playing with an extra bishop. Carlsen would probably try to calculate all the variations possible to the end and satisfy himself of their soundness before choosing the move 35 Qh6+, providing he had enough time.
Jul-23-12  talisman: ♗ goes to d8 and black should hold.
Jul-23-12
Premium Chessgames Member
  Eyal: <awfulhangover: 35.Qh6+ Kg8 36. Qxb2+ Kh3 37. Qa1 was not good for white>

Black can't play two consecutive moves - after 36.e5 Qxb2+ 37.Kh3 Qa1 38.exf6 Black is mated (38...Qh1+ 39.Kg4 and the white king isn't in any danger).

Jul-23-12
Premium Chessgames Member
  Check It Out: Maybe Magnus will try to swing his LSB to e6 via f1-h3.
Jul-23-12
Premium Chessgames Member
  Check It Out: Forcing matters with the pawn push g4-g5 might be another plan for white, but that looks risky.
Jul-23-12  okba1: the panic of naka soon will be visible
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