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Hikaru Nakamura vs Magnus Carlsen
"Swiss Miss" (game of the day Jan-30-2015)
Zurich Chess Challenge (2014), Zurich SUI, rd 3, Feb-01
Nimzo-Indian Defense: Kmoch Variation (E20)  ·  0-1

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 31 OF 31 ·  Later Kibitzing>
Jan-30-15  SirRuthless: Then d6 becomes available threatening nasty things with the N on e7. Run it through an engine if you'd like. White is winning and black has no counterplay at all after 37. Qh6.
Jan-30-15  Shamot: <SirRuthless: Then d6 becomes available threatening nasty things with the N on e7>

The d6 does not become available since recapturing the white queen with f pawn attacks the knight. so the knight never reaches e7 as you are saying. Please calculate yourself first.

Jan-30-15  SirRuthless: <Shamot>You are wrong with your assumptions. I wasn't planning on taking the black Q , just leaving white Q on h6. I am also threatening Qxh7# next move if black Q goes to a6 or b6. All other squares on that rank are under attack. Black Q has nowhere to go and i don't have to take her. My plan is simply 38.d6!, black has to take white Q on h6 at which point i recapture with g pawn. The problem is black is in zugzwang. He has nothing good, I am threatening d6 next move, and if black rook moves i royal fork on e7. You cant stop all of d6 , Ne7+ and Qxh7# without giving me your knight. Black has no good moves after 37.Qh6 .You push a pawn? I go d6, you move your rook, I go Ne7+ and you lose. You move your Q the other way and I Qxh7#. Black is dead, done, finished.
Jan-30-15  Shamot: <SirRuthless: My plan is simply 38.d6!, black has to take white Q on h6 at which point i recapture with g pawn. The problem is black is in zugzwang. He has nothing good, I am threatening d6 next move, and if black rook moves i royal fork on e7. You cant stop all of d6 , Ne7+ and Qxh7# without giving me your knight. Black has no good moves after 37.Qh6 .You push a pawn? I go d6, you move your rook, I go Ne7+ and you lose. You move your Q the other way and I Qxh7#. Black is dead, done, finished.>

so, according to your plan

38. d6

but, it is replied by 38...Nxd6, as it was played in the game. then if
39. Nxd6
it is met with Rd8. And now white Knight can not return to f5. otherwise white is mated in 5 moves, as has been shown by many analysts.

so nothing changes by placing the black queen on h6. we are pretty much back to the sitaution that actually happened in the game.

Jan-30-15  Steve.Patzer: So 37. d6 was the defining moment?
Jan-30-15  Shamot: <Steve.Patzer: So 37. d6 was the defining moment?>

Yes. It is a unanimous opinion of the analysts that I have seen so far, that d6 was the mistake - no matter how natural this move looks OTB.

The winning move for white is 37. Qf1

Jan-30-15  SirRuthless: No <Shamot> my plan is 37.Qh6! then 38.d6! What is blacks move 37....? The difference between my idea and the game continuation is that Now I have Qh6 guarding d6 by x-ray through your Q and if 38...Rd8 I have Nf4! or Rd2! and d6 is now double defended. If for example, 37. Qh6 b6(what else black has no good moves?) 38.d6 Nxd6 39. Nxd6 Rd8 40. Nf4 Rd1+ Kb2, now black has nothing at all and I am up a knight for the pawn. Can you provide a move for black as reply to 36. Qh6?
Jan-30-15  SirRuthless: <Shamot> 37. although a sexy idea, Qf1 is unnecessary and unnatural to spot over the board. Qh6 just continues the zugzwang, no fancy tactics, no tricks. It is an acknowledgement that black is in zugzwang and the precise tactic that black used to escape would have been unavailable. the reason Nf4 was impossible in the game continuation was because blacks Q had access to b6 and white gets mated. with the Q on h6 that is impossible, like I said Qh6 provides an x-ray protection on the 6th rank SO the line 37.d6 Nx 38.Nx Rd8 39. Nf4 Rd1+ 40. Kb2 Qb6+ and the resulting mate is impossible. d6 came a move too early, 38.d6 needed to be prepared with 37.Qh6.
Jan-30-15  Shamot: <SirRuthless:> I don't know what you are talking about. either you are not looking at the board or you have no idea about the position. How the hell can white knight land on f4 ???!!!

Please explain.

Jan-30-15  SirRuthless: I meant Nf5. You keep avoiding my question. Answer the question please. What does black do after 37. Qh6!?
Jan-30-15  disasterion: I'm with SirRuthless here. 37.Qh6 looks emphatic. There may be other ways of winning, but this seems simplest: force the queen exchange, after which black has nothing.
Feb-20-15  J.Capablanca: What about 37. Qh4?
Apr-03-15  DanielHoseano: Classic idea to stop checkmate, just break the board!
Apr-03-15  DanielHoseano: Black to play and win:) rrnbqkbnr/pppp1ppp/8/)3/5PP1/8/PPPPP3/RNBQKBNR
Apr-04-15  MagnusVerMagnus: Why would anyone look for an alternate move to 37 QH6, its 1-0
Jun-03-15  Funicular: If black's in zugzwang, why Qh6 and force a queen exchange? If your opponent can't do anything, why give him something to do? lol

But yeah, most of us would just be so anxious and excited about defeating carlsen for the first time in our lives, we'd probably play Qh6 right away. Like Naka said once after a tata steel game press conference, "We're all human at the end of the day."

Jul-19-15  echever7: 37. Qf1 wins the black knight on c4 That's would be a nice finish.

(37...Nd6 38. Rh6. Everyone knows now the threat Rxh7)

Aug-19-15  pipapino: voted game and video of the year by all the clowns in clowntown.
Oct-15-15  The Kings Domain: Masterly game. Gotta love the final moves by Carlsen to ensure there wouldn't be a draw.
Jan-09-16  ArkadyBalagan: 35. Rh1, threatening 36. d6, and white wins. The presence of the white rook on the first row stops any counter play by black.
Feb-03-16  yurikvelo: Inferior Carlsen's play after opening led to forced M30 by 29th move.

Nakamura missed forced M22 37.Rh1! (or any of 14 winning moves) and played drawish 37.d6??

In drawish position, Nakamura played 40.Qh5?? and 42.Qe2? what gives black easy win

multiPV of this game:
http://pastebin.com/8hTtVT3M

Mar-22-16  Cobax12: Great game by Carlsen, it's amazing how he manages pressure when he is defending, he plays really calmly as , he saw everything further
May-02-17  User not found: I'm obviously engine analysing now but I still remember Qf1 here and Carlsen surely would have tipped his king..


click for larger view

Nice variation that destroys black.. Qf1. (time to resign but..)..b5 .Qh3 ..Na5 .d6. ..Nb7. .Ne7+ which is something like a forced mate in 14 but....


click for larger view

..Rxp .pxR ..Nd6 .Qd6 ..kxg7 .Qd8! Qxg5 ..e8 and must be <under promoted to a knight> or black has Qg1+ and probably a win somewhere.. Black forced to play kg6... It's just completely lost from the Qf1 yet Nakamura pushed the pawn. Love this game.


click for larger view

Dec-27-18  JohnBoy: Iím convinced <Ruthless> was correct. 37.Qh6 is simple and w/o risk. I was no big fan of his, but right is right. His notes above make it clear.
Dec-21-19  abuzic: Adding to <SirRuthless> excellent remarks to 37.Qh6, Stockfish (at depth 40 - 99% - 43958MN - 99.9%) gave the following evaluation of possible black's 37... responses:

...Qxh6 +23.88; ...Na5 +30.67; ...Ne3 +50.55; ...b6 +53.81; b5 +53.94; ...Nd2 #18; ...Nb6, ...Nd6 and ...Nxa3 #17; ...f6 and ...Nb2 #11; ...Re6 #6; ...Qh5 and ...Qxf5 #3; all other moves #1.

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