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Magnus Carlsen vs Ding Liren
Sinquefield Cup (2019), St Louis, MO USA, rd 8, Aug-25
Nimzo-Indian Defense: Three Knights Variation (E21)  ·  1/2-1/2

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 4 OF 4 ·  Later Kibitzing>
Aug-25-19
Premium Chessgames Member
  An Englishman: Good Morning: Looking at 30.Rxb7,Rae8; 31.Rb5,f4;32.Kf2. White must have something, anything, better than that.
Aug-25-19  BOSTER: <Totally open>, but not naked.
Aug-25-19  Pedro Fernandez: << BOSTER>: <Totally open>, but not naked.> Exactly! BTW, I also thought about 29.g3 but I do prefer 29.Kf2 as black g4-Bishop is a little less active.
Aug-25-19  BOSTER: Now rook a8 can come into game.
Aug-25-19  ajile:


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Analysis by Rybka 3 32-bit :

1. = (0.00): 30...Rae8 31.Rb5 Rg6 32.Kf1 Ra6 33.Rb7 Rg6

2. = (0.10): 30...Rad8 31.Bd4 Rxd4 32.cxd4 Re8+ 33.Kf1 Re3 34.Rg7+ Kf6 35.Rc7 Bd2 36.Bc4 Rxg3 37.Be2 Bh3+ 38.Kf2 f4 39.Rh6+ Kf5 40.Rh5+ Ke4 41.Re7+ Kxd4 42.Bf3 Bg4 43.Bxg4 Be3+ 44.Rxe3 Rxe3 45.Ra5 Rc3

Aug-25-19
Premium Chessgames Member
  dernier loup de T: <An Englishman>: I agree with your variantis, but NOT immediately 31...f4 because after 32.Kf2 (which yo quote), Bxf4+ would be a terrible threat?...
Aug-25-19
Premium Chessgames Member
  Sally Simpson: Rxb2 - Material level, each has two rooks, two bishops, two pawns...
Aug-25-19
Premium Chessgames Member
  dernier loup de T: <An Englishman>: sorry, read "variation" please...
Aug-25-19  Pedro Fernandez: A title which it deserves this game: "Tightrope". Carlsen is dense in ideas!
Aug-25-19  BOSTER: Rook a-e8 is strong enough.
Aug-25-19
Premium Chessgames Member
  dernier loup de T: <Pedro Fernandez>: "tightrope"!! ("sur la corde raide"); learning much english vocabulary this evening, if not chess (the level of such a tournament is too high for me!); thanks!!
Aug-25-19  Pedro Fernandez: Do you figure out if both players crown (queening) at less one out of its pawns? I say that as there is enough material to protect those ones, and white c-pawn and black a-pawn are free (isolated).
Aug-25-19  BOSTER: Bf4 is interesting idea.
Aug-25-19
Premium Chessgames Member
  An Englishman: Good Morning: Looking at 31...f4; 32.Kf2,fxg3+; 33.Kxg3,Rxe5; 34.Rxe5,Bf4+ and 34.Rxg4+. Indeed, 31...f4 does look unlikely unless Ding Liren sees something I've missed.
Aug-25-19
Premium Chessgames Member
  WorstPlayerEver: 31...Bf4 32. Rxg4+
Aug-25-19
Premium Chessgames Member
  dernier loup de T: <An Englishman>: is it not check after your 34.Rxe5? Anyway, it seems that Carlsen would not play 34.Re5+, but 34.Rxg4+... No credit for me to say that: my little Houdini is whispering it into my ear!
Aug-25-19  BOSTER: Draw.
Aug-25-19
Premium Chessgames Member
  An Englishman: Good Morning: Good game--nice use of the King in defense by Ding Liren.
Aug-25-19
Premium Chessgames Member
  WorstPlayerEver: Good game, although I didn't sense Ding was that impressed. He spent almost 30 min on 17...Nc6, then he played quite fast.
Aug-25-19
Premium Chessgames Member
  dernier loup de T: Poor Magnus: not even ONE of his opponents agrees to blunder against him in this tournament! (LOL)
Aug-25-19  Pedro Fernandez: A draw but an interesting game. Nepo and Kariakin are winning. This tournament becoming really hot!
Aug-25-19  tim butler: Can anybody tell me when was the last time Nakamura has beaten any of these elite player in a classical game?
Aug-25-19  csmath: Actually Shak gave him a chance to win but he missed the strongest play.
Aug-25-19  csmath: Magnus could not tell what he missed. Probably nothing, it is just an equal position no matter what.

Critical position:


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Now the following continuation is more challenging than what was in the game (25. Rh7)

25. Bd3 Kf7
26. Bf2! b6!

(Another atempt to block bishop leads to 26. ...Ba3, 27. Ra4 Be7 28. Nh4 and black has


click for larger view

some serious problems to solve, very likely a loss of exchange.)

27. Be4 Bd7
28. Rh7+ Ke6
29. Kd1 Ba3
30. R4h6

again critical position for black


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30. ...Rae8!

(30. ...Be7, 31. g4 Rae8 32. Nh4


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leads to more serious problems for black)

31. Bh4 (g4 is possible but it is not better because of Ne7) 31 ... Be7
32. g4 Nd8

which is another critical position


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and now white has a number of equal continuations, one of which is a series of checks

33. Bg6 Bc6
34. Ng5+ Kd7
35. Bxe8+ Kxe8
36. Rxe7+ Kxe7
37. Nh7 Rf7
38. Bxf6+ Ke8
39. Ng5 Rd7+
40. Kc2 Nf7
41. Nxf7 Kxf7
42. Bxe5

with equal game of opposite color bishops.


click for larger view

Another

Aug-26-19  Ulhumbrus: One alternative to 9 cxd5 is 9 a3 removing the pin
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