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Axel Bachmann vs Vladimir Fedoseev
Aeroflot Open (2016), Moscow RUS, rd 7, Mar-07
Queen's Indian Defense: Classical Variation (E17)  ·  0-1

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Mar-07-16  Mehem: White has just swallowed the poisoned pawn with 33.Bxe4??


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35... Qf3! 0-1

Mar-07-16  notyetagm: A Bachmann vs V Fedoseev, 2016

<Mehem: White has just swallowed the poisoned pawn with 33.Bxe4??>

Instead of simply winning back the exchange with 35 ... ♗c6x♖e4? ♕c2x♗e4, which White was expecting, Black played the much stronger <ZWISCHENZUG> 35 ... ♕f6-f3! 0-1 and wins a whole rook, remaining a piece up.

Mar-07-16  notyetagm: A Bachmann vs V Fedoseev, 2016

Game Collection: ZWISCHENZUG! Not 35 ... Bc6xRe4? but first 35 .. Qf6-f3! 0-1, winning a rook

Oct-18-17
Premium Chessgames Member
  FSR: 33...Rexe4 34.Rxe4 Rxe4 35.Rxe4 Qf3 36.Re8+ (what else?) Bxe8 0-1
Oct-18-17
Premium Chessgames Member
  SonOfSteel: (what else?)
Equally hopeless but less immediate is
36.♕e2 ♗xe4 37.♕xf3 ♗xf3
Oct-18-17
Premium Chessgames Member
  Once: It was Morphy who taught us to exchange pinned pieces for other pieces which can't wriggle free. A diagonal pin on a bishop ought to be upgraded to a diagonal pin on a rook.

A diagonally pinned bishop might escape. A diagonally pinned rook ain't going nowhere (providing it's an absolute pin, natch).

There's a little trappette in this game. Instead of the crushing 35...Qf3, Black might get too clever for his own good with 35...Qa1+ 36. Kg2 Qd4


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Unfortunately, 37. f3 busts this line. The rook is defended a second time and there is no pin.

Oct-18-17  gofer: Ouch, accepting a poisoned pawn is about as horrible as <chess> life gets...
Oct-18-17  WorstPlayerEver: The weird thing is: ...Qf3 is probably the first thing to look at for us puzzlers.
Oct-18-17  leRevenant: Thank you <Once> for your warning: <Unfortunately, 37. f3 busts this line. The rook is defended a second time and there is no pin.>
Oct-18-17  malt: I had
33...Rd:e4 34.R:e4 R:e4 35.R:e4 Qf3
Oct-18-17  mel gibson: 33 BxP - what a blunder.

A poisoned pawn.

Oct-18-17  Lambda: After 36. Re8+, I made life a little more complicated for myself by choosing 36... Kf7 for some reason, although there's not much difference.
Oct-18-17  clement41: 33...Rexe4 34.Rxe4 Rxe4 35.Rxe4 Qf3! -+
At first I had a hallucination, thinking that 35...Qa1+ 36 Kg2 Qd4 was winning back the rook, pinning and preventing f2-f3 but the king is now on g2... However potent 35...Qa1+ 36 Kg2 Qe1 may look, after 37 f3 Bxe4 it only transposes to a queen or pawn endgame (depending on white's choice) that I wouldn't appreciate to play on the black side.
Oct-18-17  Patriot: What's wrong with 33...Rdxe4? Like <malt>, that's the line I had.
Oct-18-17  WorstPlayerEver: @Nothing ☺
Oct-18-17
Premium Chessgames Member
  kevin86: The rook is squeezed against the mate on h1!
Oct-18-17  BOSTER: If we are talking about the pin, why white did not see that e4 pawn is pinned, and did not play 33.f3 but not 33.Bxe4?
Oct-18-17  Bubo bubo: The bishop seems to be protected sufficiently, but after 33...Rdxe4 34.Rxe4 Rxe4 35.Rxe4 Qf3! the rook is pinned against the mate square g2. Since it cannot be protected further, Black will end up one piece to the good.
Oct-18-17  Helios727: Is this called a winning pin, or an x-ray attack, or is there a special name for this?
Oct-18-17  cjgone: Got it! Wow, that was a satisfying finish.

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