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Magnus Carlsen vs Yu Yangyi
Qatar Masters (Tie-Breaks) (2015) (blitz), Doha QAT, rd 1, Dec-29
Formation: Queen Pawn Game: London System (D02)  ·  1-0



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Kibitzer's Corner
Premium Chessgames Member

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After 32....Rh8. I wonder to what extent Carlsen's next move was pure calculation versus positional evaluation (eg Black's QB is completely out of play).

Dec-30-15  LivBlockade: At a minumum, even at this time control, I'm sure he saw a couple of basic tactics such as:

1) 33...Qd7 pinning the rook

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White wins with Rxg6+ and Qxd7

2) After the game continuation 33...fxe6; 34. Qxe6 Qe8 is the only reasonable try to protect the g6 pawn. Then after 35. Qxd6 as played, I would assume that Magnus saw (before playing Rxe6) that the try 35...Qe3+; 36. Kg2 Qxd3

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White plays 37. Qd7+ and at least wins the rook with check, with a big advantage.

Just by seeing that much (that little), which Magnus can probably do in one or two seconds (or more likely, he saw it while his opponent was thinking), he knows that Rxe6 is not really a sacrifice.

Dec-30-15  morfishine: <keypusher> On this comment: <...I wonder to what extent Carlsen's next move was pure calculation versus positional evaluation> Please, spare us such time-wasting ponderings; or perhaps you were trying to impress personage with your command of words and phrases: NOTE: Carlsen does not make such moves as <33.Rxe6> based on "positional evaluation"

Earth to <keypusher>...Earth to <keypusher>...Ground Control to Major Tom...LOL


Premium Chessgames Member
  keypusher: <LivBlockade> thanks, very illuminating!
Premium Chessgames Member
  tamar: 30 Qg4 was possible which probably gave Carlsen a preview of the tactics. It isn't obviously crushing because Black has so many choices, but Komodo 9 gives it +4.72 at 29 depth.

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If 30...g6 31 Bxg6 fxg6 31 Rxe6 and the position starts to resemble the game.

If 30...Bxe5 31 Nxe5 with the idea of Qh5 and sacrifice on g6, also overwhelming.

However the move 30 Re2 preserves White's threats, and Carlsen gets the decisive blow in a much easier to calculate setting after Black has made a few more positional concessions ( especially g6)

Premium Chessgames Member
  keypusher: <morfishine > good luck with that bug stuck up your ass, buddy.
Dec-31-15  latvalatvian: Avoid all chess computers.
Premium Chessgames Member
  thegoodanarchist: 33.Rxe6! reminds me of this game with an earlier 20.Rxe6!!:

Karpov vs Topalov, 1994

Jan-02-16  rogl: Peter Svidler suggested Rxe6 in his live commentary, so I guess it's not that hard for a super gm to see.
Apr-22-17  yadasampati: Not so difficult. It took me less than half a minute to see that Rxe6 followed by Qxe6 devastates blacks defense, and will either win the bishop on d6 or the pawn on g6.
Apr-22-17  Walter Glattke: Political Party, 37.-Rc7 is draw,
33.Bxg6 Kxg6 34.Rxe6+ fxe6 35.Qxe6+ Kg7
36.Ne5 Bxe5 37.Rf7+ Kg8 38.Qg6+ Bg7
34.-Kg7 35.Ne5 Bxe5 36.(36.g6? Qxh4)Rxf7+ Kxf7 37.Qf5+ Bf6 38.Rxf6+ Qxf6 39.Qxf6+ and Qxh8 +
Fake news, white must begin with 33.Bxg6!
Apr-22-17  Walter Glattke: Or 39.-Kg8 40.g6 Rh7 41.gxh7+ +
Apr-22-17  Walter Glattke: To yada, "political Party" could be
35.Qxd6 Rc6!? but 35.-Qe3+, and black has a Bishop, too, and no pressure to g6. This match looks like a sales party for China.
Apr-22-17  AlicesKnight: I saw the break-in but did not recognise that the attack could afford the Q exchange. But the active White BN and the neutered Black B meant that Carlsen could ignore the return of the exchange. A very smooth performance.
Apr-22-17  goldfarbdj: I found the first couple of moves, which is more than I usually do on a Saturday.
Apr-22-17  Walter Glattke: Sorry to my comments, I saw a double
perpetual after 35.-Qe3+ 36.Rf2 Qxd3
37.Qf6+ Kg8 38.Qe6+ Kg7 (Kh7?? Qf7#)
or 37.Ne5 Qg3+ 38.Kf1 Qh3+,
while 37.-Nc7 instead 37.-Rxh4? could bring 38.Nxg6 Re8 40.h5 Rf7 or 38.Bxg6 Rf8
Premium Chessgames Member
  agb2002: White has a bishop and a knight for the bishop pair.

The bishop aims at g6. This suggests 33.Rxe6 based on the line 33... fxe6 (33... Qd7 34.Rxg6+ fxg6 35.Qxd7+ wins) 34.Qxe6 Qe8 35.Qxd6 Qe3+ 36.Rf2 Qxd3 37.Qf6+ Kg8 (37... Kh7 38.Qf7#) 38.Ne5 Qg3+ (38... Qd1+ 39.Kg2 and the double threat Qf7# and Qxg6# wins) 39.Kf1 Qh3+ 40.Ke2 wins as in the previous subline (40... Qd7 41.Nxd7; 40... Qg4+ 41.Nxg4).

That's all I can do today.

Apr-22-17  saturn2: The subtlety is to check the counterplay after ..Qe3+
Apr-22-17  morfishine: Seen it but gorgeous nonetheless


Apr-22-17  Walter Glattke: I think, that 33.Bxg6 will also win.
Premium Chessgames Member
  drollere: <I think, that 33.Bxg6 will also win.>

that was my solution. after Qxe6 or Rxe6 white has two pawns for the piece and two open files, rook loaded, on the K position. the way white capitalizes on black's Rxh4 is very pretty.

Apr-22-17  mel gibson: I thought about
33. Rxe6

but it looked risky.

The computer agrees but blacks reply is different.

33. Rxe6 (33. Rxe6 (♖e2xe6 ♖c8-c7 ♖e6xd6 ♕d8xd6 ♘f3-e5 ♗a8-b7 ♖f1-f6 ♗b7-c8 ♕g4xc8 ♖c7xc8 ♖f6xd6 ♖h8xh4 ♖d6xb6 ♖c8-h8 ♖b6-b7 ♖h4-h1+ ♔g1-f2 ♖h8-h2+ ♔f2-e3 ♖h2-h3+ ♘e5-f3 ♖h1-g1 ♔e3-f4 ♖g1-a1 ♗d3-e2 ♔g7-g8 ♔f4-e5 ♖a1xa4) +3.70/17 171)

score for white +3.70 depth 17

Apr-22-17  steinitzfan: I'm tempted to actually give myself credit for this one. You do an asymmetric exchange (not really a sacrifice) and get a lot of pressure. A lot of defensive tries by Black to check out after that. Interesting that White can increase his advantage with a queen trade. Avoiding a real sac does have certain advantages.
Apr-23-17  patzer2: Here's my analysis of today's Saturday puzzle (19. ?) and game with the opening explorer and Stockfish 8:

<1. d4 Nf6 2. Bf4 d5 3. e3 e6 4. Nf3 a6> My preference is the popular move 4... c5 as in Kamsky vs Nakamura, 2017.

<5. Bd3 c5 6. c3 Bd6> More often played is 6... Nc6 as in B Nadera vs Zhou Jianchao, 2007.

<7. Bg3 Nc6 8. Nbd2 O-O 9. Ne5 Ne7> Better here IMO is the computer choice 9...Bxe5 10. cxe5 Nd5 = (0.00 @ 34 depth, Stockfish 8) or 9...Qc7 10. Nxc6 Qxc6 11. Bxd6 Qxd6 12, dxc5 Qxc5 = (+0.08 @ 34 depth, Stockfish 8)

<11. Bh4 Nf5 12. Bg5 h6 13. Bf4 Bb7 14. h3 Be7> This slightly passive move appears to lack the activity needed to neutralize the play of the world champion. Instead, the computers prefer 14... Qc7 15. Re1 Rfd8 = (0.00 @ 27 depth, Stockfish 8)

<15. a4 Nd6 16. f3 Nd7 17. Qe2 Nf6 18. Bh2 Qc8 19. Rac1 a5>

A worthy alternative is 19... c4 20. Bc2 b5 21. e4 Qd8 22. Ra1 b4 23. exd5 exd5 24. cxb4 Nde8 25. b3 c3 26. Nb1 Bxb4 27. Nd3 a5 28. Nc5 Bc8 29. Qe3 Ba6 30. Rd1 Nd6 31. Nxc3 Re8 32. Qd2 Re2 33. Nxe2 Bxd2 34. Rxd2 Qb6 35. Rc1 Bxe2 36. Rxe2 Nb7 37. Kf1 Nd8 38. Bg1 Nc6 =.

<20. g4 Qd8 21. Qg2 Nd7 22. f4 Rc8 23. Rce1 cxd4 24. exd4 Ba8> This not at all obvious oversight, allowing 25. g5! to (+1.48 @ 23 depth, Stockfish 8), appears to be Black's decisive error.

Instead 24...Bh4 25. Re2 Nxe5 26. fxe5 Ne4 (+0.40 @ 24 depth, Stockfish 8) gives Black better drawing chances.

<25. g5 hxg5 26. fxg5 Nxe5 27. Bxe5 Nc4 28. Nf3 Nxe5 29. Rxe5 Bd6 30. Re2 g6 31. Qg4 Kg7 32. h4 Rh8?> White is probably winning against best play. However, this makes it too easy for the world champion, who finds the surprise winning move 33. Rxe6!! to solve today's Saturday puzzle.

Black can put up more resistance with 32... Rc7 33. Ne5 Bxe5 34. Rxe5 Rh8 but White still wins after 35. Qf4 Rh7 36. Be2 Kg8 37. h5 gxh5 38. g6 Rg7 39. Rxh5 fxg6 40. Rh6 Bb7 41. Qe5 Rh7 42. Rxg6+ Rcg7 43. Qxe6+ Kh8 44. Rff6 Rh6 45. Bh5 Rxh5 46. Rxg7 Ba6 47. Rg2 Bd3 48. Rh6+ Bh7 49. Rxh5 Qf8 50. Qe5+ Qf6 51. Qxf6#.

<33. Rxe6!! fxe6> If 33... Rc7 White wins after 34. Rxd6 Qxd6 as play might continue 35. Ne5 Re8 36. Rf6 Qf8 37. Nxg6 Re1+ 38. Kg2 Qg8 39. Qf4 Rb7 40. Rd6 f5 41. gxf6+ Kf7 42. Kf2 Re6 43. Ne5+ Rxe5 44. Qxe5 Qe8 45. Qh5+ Kf8 46. Qh8+ Kf7 47. Qg7#.

<34. Qxe6 Qe8> Not 34... Qf8?? 35. Qxg6#.

<35. Qxd6 Rc6 36. Qe5+ Qxe5 37. Nxe5 Rxh4> If 37... Re6, White wins with 38. Rf7+ Kg8 39. Rc7 Rh7 40. Rc8+ Kg7 41. Rxa8 Rxh4 42. Ra7+ Kg8 43. Bxg6 Rd6 44. Bf7+ Kh8 45. Bxd5 Rxd5 46. Ng6+ Kg8 47. Ne7+ Kf8 48. Nxd5 .

<38. Rf7+ Kg8 39. Ra7 Rc8 40. Bxg6 Bc6 41. Bf7+ Kf8 42. Ng6+ 1-0> Black resigns as White wins easy with an extra piece and two additional pawns.

Dec-05-17  chessperson2222222: Heres a similar game where I employed the london system to beat a higher rated opponent.

[Event "ICA Tournament"]
[Site "Hackensack"]
[Date "2017.12.03"]
[Round "4"]
[White "William Guskind"]
[Black "Andrew Bykhovsky"]
[Result "1-0"]
[Utcdate "2017.12.03"]
[Utctime "00:41:02"]
[WhiteElo "1618"]
[BlackElo "1896"]
[Variant "Standard"]
[TimeControl "-"]
[ECO "D02"]
[Opening "Queen's Pawn Game: London System"]
[Termination "Unterminated"]
[Annotator ""]

1.d4 Nf6 2.Nf3 d5 3.Bf4 D02 ♕ueen's ♙awn Game: London System 3...e6 4.e3 b6 5.Bd3 Be7 6.O-O c5 7.c3 c4 8.Bc2 Bb7 9.Nbd2 O-O 10.h3 Nbd7 11.Ne5 Nxe5 12.Bxe5 Nd7 13.Bh2 Re8 14.e4 f6 15.exd5 exd5 16.Re1 b5 17.a3 Qb6 18.Qh5 Nf8 19.Re3 g6 20.Qe2 Kf7 21.Re1 Qd8 22.Bf4 Bc6 23.Bh6 Bd6 24.Bxf8 Kxf8 25.Qg4 Rxe3 26.Rxe3 Bd7 27.Qf3 Bc6 28.h4 Kg7 29.h5 Qd7 30.Nf1 Re8 31.Rxe8 Qxe8 32.hxg6 hxg6 33.Qg4 Bd7? 34.Bxg6!! Bxg4 35.Bxe8 a6 36.Ne3 Be6 37.Bc6 Bf4 38.Bb7 a5 39.Bc6 b4 40.axb4 axb4 41.cxb4 Bxe3 42.fxe3 Kf8 43.e4 dxe4 44.Bxe4 Ke7 45.Kf2 Kd8 46.Ke2 Kc7 47.d5 Bd7 48.Ke3 Kb6 49.Kd4 Kb5 50.Kc3 Be8 51.d6 Bd7 52.Bd5 Bf5 53.Bxc4+ Kc6 54.Kd4 Kxd6 55.b5 Bc8 56.Be2 Kc7 57.Kc5 f5 58.Bf3 Be6 59.b6+ Kb8 60.Kd6 Bc4 61.Bd5 Bd3 62.b4 Be4 63.Ke5 Bd3 64.Be6 Kb7 65.Bxf5 Bf1 66.g4 1-0

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