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Shakhriyar Mamedyarov vs Magnus Carlsen
World Blitz Cup (2007) (blitz), Moscow RUS, rd 29, Nov-22
Benko Gambit: Accepted. Dlugy Variation (A57)  ·  0-1
ANALYSIS [x]

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Kibitzer's Corner
Nov-25-07  ounos: Ha! In your face! 28. ... Bd4+!
Nov-25-07  notyetagm: Mamedyarov vs Carlsen, 2007

<ounos: Ha! In your face! 28. ... Bd4+!>

Position after 28 ... ♗g7-d4+!:


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Here the exceptional Magnus Carlsen plays an excpetional version of the <INTERFERENCE> tactic that even the tactical wizard Mamedyarov has missed.

The White d7-rook is <LOOSE>, attacked by the Black d8-rook while being defended by the White d2-rook. For the White d2-rook to continue to <DEFEND> the White d7-rook, the line d2-d7 must stay open.

Magnus' brilliant 28 ... ♗g7-d4+! is a stupendous <INTERFERENCE> shot, cutting off the line of life-giving force from the White d2-rook to the <LOOSE> White d7-rook with <TEMPO> from <CHECKING> the White g1-king.

Since the defending line piece (White d2-rook) is already on the line, normally the <INTERFERING> piece (Black g7-bishop) would need to be supported by some other Black piece controlling the d4-square. But here Magnus saw that his Black c3-knight does exactly that, since the <CHECK> ... ♘c3-e2+ means that the Black knight controls the d4-tactical target from the e2-tactical base. <<<<<Magnus saw that the Black c3-knight's control of the d4-tactical target could be used to support the Black g7-bishop going to d4 to <BLOCK> the critical line d2-d7.>>>>>

White loses the exchange in all lines:

29 ♖d7x♗d4 ♖d8x♖d4 <x-ray> 30 ♖d2x♖d4 ♘c3-e2+ <knight fork> and 31 ... ♘e2x♖d4

29 ♖d2x♗d4 ♘c3-e2+ <knight fork> and 30 ... ♘e2x♖d4

Nov-25-07  notyetagm: I am really impressed with Carlsen's28 ... ♗g7-d4+!, <INTERFERENCE> using the <KNIGHT FORK> ... ♘c3-e2+ to support the <BLOCKING> of the line d2-d7 at d4.
Nov-25-07  Rolfo: very instructive notyetagm, thx
Nov-27-07  notyetagm: 28 ... ♗g7-d4+! is a great tactical shot.

Unbelievable that Magnus Carlsen is only 16 years old.

Sep-14-11
Premium Chessgames Member
  numbersguy70: 28. ... Bd4 is pretty, but the real game changer was Mamedyarov's failure to see 25.a5!

Capture of either queen side pawn allows Nxe6, with serious black problems to follow. Resisting only allows further pawn advances or fails to prevent Nxe6 as well.

Nov-17-12
Premium Chessgames Member
  Phony Benoni: 28...Bd4+ is pretty, but I was most impressed by Carlsen's technique in the resulting endgame. Even after he eliminates White's queenside pawns, it's not an easy endin.g
Jun-12-15  CountryGirl: It's a fine game, especially as it is blitz.
Jan-07-18  Albanius: 58 ... Ke5 wins, but B could announce mate:

58 ... Rxe3+
59 Kxe3 Kg4
60 Ke4 Kxh4
61 Kf4! Kh3
62 Ke5 (Kf3 h4 and W must yield the opposition)

62 ... Kg4
63 Kf6 h4
64 Kxg6 h3
65 Kf7 h2
66 g6 h1/Q
67 g7 Qh7
68 Kf8 Qf5+
69 Ke8 Qg6+
70 Kf8 Qf6+
71 Kg8 Kg5
72 Kh7 Qh6+
73 Kg8 Kg6
74 Kf8 Qxg7+
75 Ke8 Qc7
76 Kf8 Qd8#

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