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Fabiano Caruana vs Vladimir Kramnik
Your Next Move (Rapid) (2016) (rapid), Leuven BEL, rd 8, Jun-18
Spanish Game: Berlin Defense (C65)  ·  1-0

ANALYSIS [x]

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Given 2 times; par: 68 [what's this?]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Jun-24-16
Premium Chessgames Member
  cro777: GM Arkadij Naiditsch: "A real masterpiece by Caruana, with great tactical blows, sacrifices and a beautiful mate in the very end ... The hero of the game was clearly the a1 rook, which went over a4 to h4 and finally mated the black king on h8!"
Jul-17-16  Ayaend: What a game again by Fabiano Caruana!! Very nice to look this wonderful game ! Well played from both players cause after 35 move Fab found Nh6+ And after the reply on Kf8 a check on the diagonal a3-f8 after black Knight or Bishop on c5 I don't see any winning compensation for White but after some exchange on c5,the amazing Brazilian Fab found the great 40.Nf5!! Finish the game! Congratulations !
Jul-17-16  siggemannen: Damn, that's pretty impressive, especially considering rapid tc.
Sep-30-18
Premium Chessgames Member
  offramp: A tale of two Nf5s.
Sep-30-18
Premium Chessgames Member
  al wazir: I almost had the right idea. I wanted to play 32. Nxf6+, but unfortunately I preceded it with 31. Rh5.
Sep-30-18  scormus: Tremendous vision by Fabiano, he must have seen the possibility of Rh8# right through. Opportunities on the h-file suggested tne first move to me, but I was oblivious to the power of Nxh6+!! A stunning combination
Sep-30-18  Walter Glattke: 31.f4 wins: 31.-cxd5 32.exd5 f6 33.Bxg6 Nf8 34.Bxe8 Rxe8 35.Rc7 Bf2 36.d6 several win ways here.
Sep-30-18  Walter Glattke: Final match position: decisive material after 40.-f6 41.Nxe7 Rxe7 42.Rh8+ Kf7 43.Rxa8
Sep-30-18  Mendrys: It's also mate after 40...f6. 41. Rh8+ Kf7 42. Qxe7+ Rxe7 43. Nd6#
Sep-30-18  patzer2: Today's Sunday puzzle (31. ?) solution 31. g3! Qe7 32. Nxh6!! ± is an instructive example of the demolition of pawn structure tactic (sacrifice on h3/h6).

I found the tactics easier to comprehend when I jumped to the end of the game, just before White's last (40. ?) move (diagram below):


click for larger view

Here (diagram above) 40. Nf5! +- unleashes a decisive discovered attack threatening the Black Queen and mate.

The next most instructive position for me was White's move 33 (diagram below):


click for larger view

Here (diagram above) visualizing the discovered attack 33. Nf5! Bxf5 34. exf5 cxd5 35. f6+ +- (even stronger is 35. fxe6+! +-) gave me a better understanding of the entire combination.

After looking at those two positions, I found it easier to visualize 31. g6! Qe7 32. Nxh6+!! +- and the moves which followed until the end of the game.

P.S.: For a Black improvement, grabbing the pawn with 15...Nxd4 16. Rxd4! Bxd4 17. g4 Bxf2+ 18. Kf2 Bg6 19. b4 c6 = (-0.05 @ 31 ply, Stockfish 9) is apparently better than the game continuation 15...h6 16. Qc2 ⩲ (+0.61 @ 33 ply, Stockfish 9).

Sep-30-18  mel gibson: Great game.
Black plays more strongly in this puzzle with a computer.

Stockfish 9 says:

31. g3

(31. g3 (g2-g3 ♕h4-e7
♘g4xh6+ ♔g8-h8 ♘h6-f5 ♕e7-f8 ♖d5-d7 ♖a8-d8 ♖d7xb7 ♗a7xf2 ♔h2-g2 ♗f2-e1 ♕c3xe1 ♗g6xf5 ♕e1-e3 ♗f5-h7 ♖c4xc6 ♖d8-c8 ♖b7-b6 ♖c8xc6 ♖b6xc6 ♖e8-c8 ♖c6-c3 ♖c8xc3 ♗b2xc3 ♕f8-a8 b3-b4 ♕a8-c6 ♕e3-d3 f7-f6 h3-h4 ♗h7-g6 ♗c3-b2 ♔h8-h7 ♗b2-c3 ♔h7-g8 ♔g2-h3 ♕c6-b7) +2.44/34 124)

score for White +2.44 depth 34.

Sep-30-18  Walter Glattke: I think, 31.g3 is a security move, so 31.f4 always wins, e.g. 31.-cxd5 32.exd5 Nd4 (where they are afraid of) 33.Rxd4 Bxc2 34.Rc4 f6 35.Qxc2 Qh5 36.Rc7 or 33.-Bxd4 34.Qxd4 f6 35.Bxg6 Qe1 36.d6? Qxa5! so 36.Bc3 Qe2 37.Bb4 Rfd8!? 38.Nxf6+ gf6 mating or 37.-Qb5 38.Bxf8 Rxf8 39.Ne3 Qxa5 40.d6 Rd8 41.Nf5 Rd7 42.Ne7+ Kh8 43.Bf7 or 42.-Kf8 43.Qc4 mating both
Sep-30-18
Premium Chessgames Member
  beatgiant: <Walter Glattke> Black has 31. f4 cxd5 32. exd5 Nd4 33. Rxd4 <Qe1> which seems to force a queen trade into a good endgame for Black. What say you?
Sep-30-18  Walter Glattke: 31.f4 Bb8 32.Rf5 (32.g3? Bxf4!) 32.-f6? 33.g3 / 32.-h5 33.g3 Bxf4 35.Rxf4 Nxf4 36.gxh4 hxg4 advangage white. 32.-Qe7 33.Nxh6+ 1 pawn for white, gxh6?? Qh8#.So, Kibitzers or metal brains, what would you play after 32.Nf5, and how to refute 31.f4!?
Sep-30-18  cormier: patzer2: <ths>

P.S.: For a Black improvement, grabbing the pawn with 15...Nxd4 16. Rxd4! Bxd4 17. g4 Bxf2+ 18. Kf2 Bg6 19. b4 c6 = (-0.05 @ 31 ply, Stockfish 9) is apparently better than the game continuation

Sep-30-18  Walter Glattke: Ah, the first comment.31.f4 cxd5 32.exd5 Nxd4 33.Rxd4 Qe1!? your move, I play 34.Re4 f6 35.Rxe1 or 34.-Bxe4 35.Qxg7#
Sep-30-18  Walter Glattke: Ah, no pawn on c2, that irritated me, are you sure for 34.Qxe1 Bxd4 35.Bxd4 Bxc2 36.Nxh6+ Kh7 37.Qe5 mating can not be stopped by 37.-Rg8 38.Nxg8 Rxg8 Qh5#
Sep-30-18  saturn2: 31 g3 diverting the queen from protecting h6 was obviously a good move to settle quickly on.
Sep-30-18
Premium Chessgames Member
  beatgiant: <Walter Glattke> 31. f4 cxd5 32. exd5 Nxd4 33. Rxd4 Qe1 34. Qxe1 <Rxe1> is what I had in mind.
Sep-30-18
Premium Chessgames Member
  agb2002: Black threatens cxd5.

The open diagonal b8-h2 discards Rd6 or Re5. This suggests 31.g3:

A) 31... Qe7 32.Nxh6+

A.1) 32... gxh6 33.Qh8#.

A.2) 32... Kf8 33.Nf5

A.2.a) 33... Bxf5 34.Rxf5 wins a pawn with a much better position.

A.2.b) 33... Qc7 34.Nxg7 looks winning (34... cxd5 35.Rxc7).

A.2.c) 33... Qf6 34.Qxf6 gxf6 35.Rd7 wins a pawn and threatens Rxb7 and Bxf6.

A.2.d) 33... Qg5 34.f4 cxd5 35.fxg5 dxc4 36.Nxg7 looks very good for White.

A.2.e) 33... cxd5 34.Nxe7 dxc4 35.Nxg6+ fxg6 36.Qf6+ Kg8 37.Qxg6+ Kf8 38.Ba3+ wins decisive material (38... Bc5 39.Bxc5+ Nxc5 40.Qd6+; 38... Nc5 39.Qd6+).

A.3) 32... Kh7 33.Nf5 looks similar.

B) 31... cxd5 32.gxh4 dxc4 33.Nxg6+ followed by Nf5 looks good for White.

Sep-30-18  messachess: Fun combination. Not very difficult.
Sep-30-18  messachess: By the way, has anyone ever found out what the deal is with <chrisowen>?
Sep-30-18  john barleycorn: <messachess: By the way, has anyone ever found out what the deal is with <chrisowen>?>

He analyses chess positions pretty well.

Sep-30-18  Imran Iskandar: Stunning sequence of moves uncorked by Caruana. I won't pretend that I even remotely solved the puzzle.
Sep-30-18
Premium Chessgames Member
  Breunor: On 31 f4, Stockfish gives:

1) -0.71 (21 ply) 31...cxd5 32.exd5 Nd4 33.Bxg6 fxg6 34.Rxd4 Qe1 35.Qd3 Kh7 36.Bc3 Qe2 37.Qxe2 Rxe2 38.Rb4 h5 39.Ne5 Rc8 40.Nc4 Rc7 41.Be5 Rd7 42.Nb6 Bxb6 43.Rxb6 Rxd5 44.Rxb7 Rxa5 45.Rxg7+ Kh6

The game move 31 g3 is considered best, see Mel Gibson's post above.

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