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David Navara vs Hikaru Nakamura
Cez Trophy Navara - Nakamura Match (2014), Prague CZE, rd 1, Jun-07
King's Indian Defense: Normal Variation. Rare Defenses (E90)  ·  0-1
ANALYSIS [x]

FEN COPIED

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Given 10 times; par: 66 [what's this?]

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Kibitzer's Corner
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Sep-13-16
Premium Chessgames Member
  lost in space: nice geometric combo

46...Rxf1+ 47. Kxf1
(47. Kh2 is obviously lost)

47...Bxb5 and the rook is pinned an lost. One piece and one room more for black is by far enough to win.

Sep-13-16
Premium Chessgames Member
  offramp: Looks like Navara had a dull moment.
Sep-13-16  steinitzfan: I can usually handle Tuesdays. 46 ... Rxf1+ -- and Black wins a bishop if White doesn't take -- or the exchange and a pawn if he does.
Sep-13-16  dfcx: white's attempt at trading rooks fails to

46...Rxf1+ 47.Kxf1 Bxb5

losing a bishop and a pawn.

Sep-13-16  goldfarbdj: Today felt more like a Monday puzzle than yesterday.
Sep-13-16
Premium Chessgames Member
  patzer2: Nakamura's neat pinning combination 46...Rxf1+ 47.Kxf1 Bxb5 solves today's Tuesday puzzle.

Black's decisive mistake appears to be 32. h5? allowing 32...Qf4 to (-1.68 @ 30 depth, Stockfish 7). Instead, 32. g3 Bg4 33. Qc1 = to (-0.30 @ 29 depth, Komodo 10) gives Black a defensible position.

Sep-13-16
Premium Chessgames Member
  YouRang: Tuesday 46...?


click for larger view

Black is winning already due to the passed pawn, the vulnerability of the Pb5, and superior mobility (especially of the bishop and king).

But now, black has also an easy tactic: <46...Rxf1+ 47.Kxf1> puts white's rook and king on the same light-square diagonal at the cost of the exchange, which set up our (black) light-square bishop to make the rook-winning pin: <47...Bxb5>


click for larger view

Black has a fun endgame up a bishop and connected passed pawns. Small consolation for white to deprive black's fun by resigning.

I suppose one could argue that white is better off playing <47.Kh2>, but really, white should just accept the small consolation.

Sep-13-16  drollere: It's interesting how certain piece relationships, R vs. R for example, can capture attention and distort it.

46. ... Rxf1+
47. Kxf1 Bxb5
48. [any] Bxc4

Sep-13-16  AlicesKnight: 46..... Rxf1+; 47.gxf1 bxb5 pins and wins the R, and White can resign. Let's see - yes; White's 46th set it up, but it is hard to see how the b-pawn (and the white B) can be saved anyway.
Sep-13-16
Premium Chessgames Member
  agb2002: The material is identical.

White threatens Rxc1.

Black can win a piece and a pawn at least with 46... Rxf1+:

A) 47.Kxf1 Bxb5 followed by 48... Bxc4.

B) 47.Kh2 Rxf2, etc.

Sep-13-16  pawn to QB4: <ajk68: 42.Re4?? is a blunder,> I wouldn't have thought it was - there isn't a way to save the bishop on f1. So why not try the cheapo before resigning - some of the guys I play might just reply ...Rxc4?? Of course, some of the guys I play aren't the guys Navara plays.
Sep-13-16  morfishine: <46...Rxf1+> followed by 47...Bxb5

*****

Sep-13-16  zb2cr: Simple. 46 ... Rxf1+ wins a Bishop. If White responds 47. Kxf1, Bxb5 pins and wins the White Rook on c4. If White declines the exchanger sac with 47. Kh2, Black can still snag the White Pawn on b5. In both cases, Black emerges with a B+P material advantage and connected passed Pawns for a simple endgame win.
Sep-13-16  et1: Poor David Navara, Rc4 was a disaster move. Easy to spot the solution, very beautiful
Sep-13-16
Premium Chessgames Member
  Sally Simpson:


click for larger view

46.Rc4 walked into the sac and pin trick but the game is lost as soon as the b5 pawn falls.

White did have a trick on the table. Instead of 46.Rc4 try 46.Rg4 hitting the g6 pawn with a check. and if (you must have hope) 46...Kf5 47.Re4.


click for larger view

The b-pawn is being held tactically with a Rook fork on d6. White can think of untangling ideas like f3 and Kf2.

Sep-13-16  Cheapo by the Dozen: Any problem I can solve in less than 10 seconds is Monday-level to me. :)
Sep-13-16
Premium Chessgames Member
  kevin86: This one was easy! The rook is sacrificed to lead to a pin and regain of the rook for a pawn plus=easy win 4 black..
Sep-13-16
Premium Chessgames Member
  kevin86: ...and a bishop plus
Sep-13-16
Premium Chessgames Member
  TheFocus: Too easy!!
Sep-13-16  JimNorCal: Day in, day out I find patzer2's comments to be excellent.

Who will join me in recommending his promotion to patzer1? :)

Seriously though, really clear, complete and often finding side-insights of value. Thanks.

Sep-13-16
Premium Chessgames Member
  PawnSac: TheFocus: Too easy!!

easier than some of the monday puzzles.
in fact, i thought today WAS monday! lol

Sep-13-16
Premium Chessgames Member
  jith1207: <chrisowen> I don't think the second comment was totally necessary. It looks like redundant to me. Why spoil the beautiful essay with an ugly footnote!
Sep-13-16  Aunt Jemima: I got this one too! It took me a minute but then I noticed that R...f1+ set up the pin. Hopefully I can get tomorrow's puzzle too.
Sep-13-16  rinkol: I still remember a game from the distant past where I was horrified to find myself in a similar position. I was expecting my opponent to play the seemingly obvious rook capture with an easy win to follow. After what seemed like a long time, he made an irrelevant pawn move and I was able to extricate myself from the danger.
Sep-14-16
Premium Chessgames Member
  whiteshark: <46...Rxf1+>, and that's it.
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