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Viktor Korchnoi vs Ulf Andersson
Hastings (1971/72), Hastings ENG, rd 1, Dec-29
Bogo-Indian Defense: Nimzowitsch Variation (E11)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
Aug-09-03  PVS: Chessgames.com: This game is identical to Korchnoi vs Ulf Andersson, 1971
Jan-14-04  Orcinus: After move 17 black's pieces are developed with a hallow center.Typical of the Bogo and Andersson. (From what I can tell he usually avoids block centers.) 23 e4? The ol' saw of attacking the center at the opposite wing of where the opposition is attacking may be valid here. Example, 23 bxc5...bxc5, Rb7. Now black has e5 for the knight making kingside attack difficult.
Nov-10-04  skeet: <Orcinus>

23.bxc5 bxc5 24.♖b7 does looks a lot better, but if Black recaptures with 23. ...dxc5 instead I don't see how White can save his d-pawn.

I think 21.♘d5 is the losing move. Korchnoi lost patience with Andersson's piece-shuffling, and immediately after 21. ...♗xd5! 22.cxd5 ♘c7 23.e4 fxe4 24.fxe4 ♘a6 it looks to me like White has just overextended himself. He gains Kingside play (while completely deadening the Queenside), but Andersson defends easily by sinking his Knights into beautiful squares.

May-30-07  wolfmaster: A high BID.
Jun-13-22  jerseybob: Korchnoi's knight maneuver 8.Nf1/9.Ne3 is overly-cute, with the result that starting with 9..Ne4, black grabs hold of the center. <skeet says "21.♘d5 is the losing move."> Maybe, maybe not. It's not a desireable move that's for sure, but I think it came from frustration: that stupid knight on e3 is clogging up white's position. Korchnoi chooses action, and against a lesser player he might've succeeded.

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