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Rudolf Osterman vs Anatoly Karpov
Vidmar Memorial (1975), Portoroz, rd 2, Jun-03
Queen's Indian Defense: Spassky System (E14)  ·  0-1

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Feb-10-07  M.D. Wilson: The somewhat obvious but far-sighted Bg5 is strong.
May-06-07  Emma: What a beautifull game.
Jul-14-09  Knight13: <M.D. Wilson: The somewhat obvious but far-sighted Bg5 is strong.> I must disagree. Karpov sacrificed the exchange to get rid of White's strongest piece (actually, the only piece that's good). He knew that White's rooks won't be in play and that his minor pieces would be in control.

So the sacrifice was positionally sound.

Aug-28-11  Psihadal: <Knight13>
Yes, of course it was a good move.
But not many people would have seen or considered it.

I love positional sacrifices like that.

Aug-28-11
Premium Chessgames Member
  perfidious: This is hardly even a sacrifice-it's obvious that in the ensuing middlegame, Black has whatever active chances there are, with no meaningful pawn breaks or open lines for the white rooks.
Aug-28-11  goldenbear: A pun could be "The Osterman Weakened", since "The Osterman Weekend" is a movie starring Rutger Hauer.
Dec-11-16  4Bishops: 45. Bd1 Rc1
So again, what is Black's response to...
46. BxP check Kf8
47. Rxc1 Nc1
White still has the aggressive advantage.
Apr-13-19  clement41: A little known gem, and because the white player looks much weaker, the many imbalances in the game (dark square domination, space advantage by black mainly) are exploited in a clear way (although perhaps Karpov did not go for the quickest way to finish white off)
Apr-13-19  clement41: Perhaps there is a mistake in the record and the actual 24th black move is ...f5 ? Only then ...Qd6 ? That’d make more sense because after 25 Ne4 there doesn’t seem to have a good square forward for blacks queen
Apr-13-19  clement41: Instructive is 13...Nh5?! uncautious allowing 14 f4! g6 15 f5!
Jun-06-20  Helios727: I plugged the final position into Stockfish and it played out to a draw.
Jun-26-20  Howard: According to the above posted Stockfish analysis 46.Bxb3+ wins.

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