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Viktor Korchnoi vs David Bronstein
USSR Championship (1964/65), Kiev URS, rd 7, Jan-05
Spanish Game: Berlin Defense (C65)  ·  1-0



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Kibitzer's Corner
Dec-22-02  refutor: ah, seeing two top grandmasters play the "berlin exchange" makes me wish it was the 60s and the middlegame and endgame was at a premium at the top levels, instead of openings ;)

what was the idea behing 39. ... Qd6? time trouble blunder?

Jul-16-03  aulero: After 39.♖e5 Black is paralyzed.

I see no defense against the manoeuvre ♖1e4-♙c3-♙d4-♙d5.

Jul-03-04  Hanzo Steel: <refutor> I take it you think the "Berlin Exchange" is unsound, or do you just think it doesn't offer afford White any advantage?
Jul-03-04  refutor: doesn't afford any advantage. at least the exchange after 3. ...a6 costs white a tempo. the "berlin exchange" is the exchange lopez with black a tempo up
Jul-04-04  acirce: It was also played by Ljubojevic in Ljubojevic vs R Calvo, 1973 for example. It's not the best but not totally illogical either, refutor's argument is compensated to a degree by the fact that Black doesn't have the f7-f6 move typical of the ordinary exchange variation.
Mar-04-09  Brown: Korchnoi does a nice job not allowing black to keep the bishop pair with 8.Nc4 This is actually part of the difference acirce is talking about. Black does not have time to solidify the e-pawn with f6.

Black may consider an alternate 8th move, such as 0-0, Qe7 or f6. Nxd6 is not much of a threat beyond assuring equalizing play.

Korchnoi is obviously not going to fall for 12.Nxe5 Qd4

Also, black could have considered 16..g6. As played, white had easy play against the isolated king's pawn.

Premium Chessgames Member
  An Englishman: Good Evening: After 26...Qb4, it appears that if anything, Black had a slight edge and if he had agreed to the exchange of Queens he would have had the better of a probable draw. What a tribute to Korchnoi's fighting spirit that only 13 moves later, he has paralyzed Bronstein so thoroughly that Black chooses to surrender his Queen. 37. White to Play is a great double pawn sacrifice and would make a good late week puzzle some day.
Dec-09-17  sudoplatov: The Berlin Exchange is similar to the Delayed and Doubly Delayed Exchange in the Morphy Defense. The idea (as mentioned above) is that ♘ on f6 and ♗ on e7 are not considered good placements for the Black Pieces. Normally the ♘ is developed to e7 or f7 (via h6) and the ♗ to d6.

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