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Arkadij Naiditsch vs Fabiano Caruana
GRENKE Chess Classic (2017), Karlsruhe GER, rd 2, Apr-16
Bishop's Opening: Vienna Hybrid (C28)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
Apr-16-17  Sally Simpson: A good bounce back from Caruana after his previous game.
Oct-26-18
Premium Chessgames Member
  Jambow: Not bad I couldn't find it but stockfish agrees with Fabiano. I'm wondering how often the very elite take a position like this examine it with an engine and then try to understand each move and the decisions that were used to get there. I say this because it seems to me that the top players moves are inline with engine moves more frequently.

I believe this has more to do with higher ratings than the pool of new players at the bottom. My play showed noticeable improvement when I would go over elite players games and try to determine what their next move was, and if they made a move that made no sense to me I would pause examine and try to see what they were attempting to accomplish. Only when I just couldn't see it would I go on, and then go back over the moves again. I would think when you get in the 2700-2800 elo range silicon would be the next step after of course the greats of old and even recent.

Oct-26-18  Stale.Mate: That’s why he’s Fab and I’m not.
Oct-26-18
Premium Chessgames Member
  al wazir: What happens after 38. Rh1 ?

If 38...Qd7, then 39. Qg1, and after 39...gxf4 40. Rxf4, I don't see a winning continuation for black.

Oct-26-18  areknames: <What happens after 38. Rh1 ?>

38..Rxf4+ 39.Rxf4 Rxf4+ 40.Ke2 Qg2+ and wins.

Oct-26-18  malt: Have
35...Q:f5 36.K:f3 Q:h3 37.Kf2 Qh2+
38.Kf3 g5
Oct-26-18
Premium Chessgames Member
  agb2002: Black is one pawn down.

White threatens Nxd5.

The position of the white king suggests 35... Qxf5:

A) 36.Kxf3 Qxh3

A.1) 37.Rh1 Rxf4+ 38.Qxf4 (38.Ke2 Qg4#) 38... Rxf4+ 39.Kxf4 Qg2 looks good for Black because of the activity of the black queen, the weak pawn on c2 and the possibility of attacking the white king with king, queen and two pawns.

A.2) 37.Ke2 Qxg3 seems to win two pawns since the knight is lost (38.Nh5 Qg4+; 38.Nd5 Qe5+).

B) 36.Re2 Nh4 37.Ke1 (37.gxh4 Qxf4+ wins decisive material) 37... Ng6, with the threat 38... Nxf4 39.gxf4 Qxh3 looks very good for Black.

Oct-26-18
Premium Chessgames Member
  thegoodanarchist: After 41.Rexf4, how does Black win?

I think it would be by 41...Rxf4, keeping the pin in place. White will be in zugzwang, and the Black king can come down the board.

But I may be wrong.

By the way, Naiditsch's play was a little hinky in GRENKE.

Oct-26-18  RandomVisitor: The waiting move 35...Qc6 also seems to work...

1) -2.45 (34 ply) 35...Qxf5 36.Kxf3 Qxh3 37.Rg1 Rxf4+ 38.Qxf4 Qh5+ 39.Kf2 Qh2+ 40.Rg2 Rxf4+ 41.gxf4 Qxf4+ 42.Kg1 Qd6 43.Re4 g6 44.Rge2 Kf7 45.Rf2+ Kg7 46.Rfe2 h5 47.Re6 Qf4 48.Rxb6 h4 49.Ree6 Qc1+ 50.Kg2 Qxc2+ 51.Kh3 Qxd3+ 52.Kxh4 Qf5 53.Rxg6+ Qxg6 54.Rxg6+ Kxg6 55.Kg4 Kf6 56.Kf4 Ke6 57.Ke4 Kd6 58.Kd3 Ke5 59.Kc2 Ke4 60.Kb1 Ke3 61.Kc2 Ke2 62.Kc1 d3

2) -2.38 (33 ply) 35...Qc6 36.Re7 Rxf5 37.Qd1 Nh2 38.Rg1 Rxf4+ 39.gxf4 Rxf4+ 40.Ke2 g5 41.Re4 Qf6 42.Rxf4 Qxf4 43.Qe1 Nf3 44.Qf2 Nxg1+ 45.Qxg1 Kf7 46.Qg2 Qe3+ 47.Kd1 Qe6 48.Qg3 Kg6 49.Kd2 h5 50.h4 g4 51.Qf4 Qf5 52.Qg3 Qf6 53.Ke2 Kf5 54.Qg2 Ke6 55.Kd1 Qxh4 56.Qb7 Qe7 57.Qc6+ Ke5 58.Qxb6

3) -0.70 (33 ply) 35...Qb7 36.g4 Nh2 37.Kg1 Nxf1 38.Rxf1 Re8 39.Ne6 Qf7 40.Qf4 g6 41.Rf2 gxf5 42.gxf5 Kh8 43.Qh4 Qe7 44.Qe4 Rg8+ 45.Kh1 Rf7 46.Rf4 Qb7 47.Rg4 Rd7 48.Nf4 Re8 49.Ne6 Qxe4+ 50.dxe4 d3 51.cxd3 Rxd3 52.Rg6 Kh7 53.Kg2 Rxb3

Oct-26-18  RandomVisitor: <thegoodanarchist><After 41.Rexf4, how does Black win?>

It looks like black just exchanges away on f3 - the resulting king and pawn ending is clearly a win for black, with the two kingside passers.

Oct-26-18  TheaN: Friday 26 October 2018

<35....?>

I had the first move but didn't properly calculate the followup. Typically, as Black doesn't really gain anything from from taking on f5.

<35....Qxf5 36.Kxf3> and I kinda thought Black was ok here because of the pin and the bad king position, and thought both Qxh3! and g5?! would do the job.

<36....Qxh3!> does the job as it also pins Pg3 so Black's directly threatening Rxf4+ and a win. However, <36....g5?! 37.Kg2! ±<>> Black drops a pawn for no reason.

Oct-26-18  RandomVisitor: 33.Kh2 likely draws...
Oct-26-18  TheaN: <TGA: After 41.Rexf4, how does Black win?

I think it would be by 41...Rxf4, keeping the pin in place. White will be in zugzwang, and the Black king can come down the board.

But I may be wrong. >

You're partly right as RV correctly states. Basically White's down and out after 40....Rxf4: in fact, he is in a practical zugzwang already and leaves just 41.Rxf4: moving the King or Queen drops Rf3, moving the Rook to anything but f4 allows Rxf3 with pandemonium and if the pawns move Black can just play Qxf3+.

41.Rxf4 Rxf4 with similar zugzwang, and indeed Black just trades all pieces for the easiest win.

Oct-26-18  patzer2: For today's Friday puzzle, I got as far as 35. Qxf5 Kxf3 36. Qxh3 Re4 in attempting to solve it. But instead of the strongest follow-up 36...Qxg3! -+ (-2.94 @ 25 ply, Stockfish 9), I deviated with the premature piece capture 36...gxf4 ∓ (-1.04 @ 21 ply, Stockish 9).

White's game takes a turn for the worse with 33. Kg1? Ref6 ∓ (-1.20 @ 25 ply, Stockfish 9).

Instead, the first player can hold it near level with 33. Kh2 Ref6 34. g4 Nf6+ 35. Rxf3 Qxf3 36. Qf4 Qc6 37. Ng3 ⩱ (-0.30 @ 23 ply, Stockfish 9). As <RV> observes, <33. Kh2 likely draws>.

Earlier, instead of improving Black's position with 14. Qb4?! b6 ⩱ (-0.46 @ 22 ply, Stockfish 9), White would have been better off with the straightforward 14. f4 ⩲ (+0.35 @ 21 ply, Stockfish 9).

Oct-26-18  patzer2: <agb2002: A.2) 37.Ke2 Qxg3 seems to win two pawns since the knight is lost (38.Nh5 Qg4+; 38.Nd5 Qe5+).> After 37. Ke2 Qxg4 38. Rf3, Stockfish 9 finds 38...Re6+! 39. Nxe6 Rxf6! -+.
Oct-26-18
Premium Chessgames Member
  Willber G: I chose 35...Rxf5 which wins at least the exchange, e.g.

36.Nxd5 Nxe1
37.Kxe1 Rxf1
38.Kd2 Rxc1
39.Kxc1

Oct-26-18  Mendrys: <Willber G> A common foil to a lot of my failed combinations is that my opponent is not obligated to recapture in many cases. I didn't see your line but playing it through it seems that instead of 37. Kxe1 he can play 37. Nf4 and keeps his queen. The knight will fall eventually as he has no where to go.
Oct-26-18
Premium Chessgames Member
  Willber G: Yep, you're right. In my defence, I was against the clock! ;)
Sep-01-20  castlemindng: https://youtu.be/okhmFRoaZN4

enjoy|

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