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Boris Spassky vs Tigran Petrosian
Petrosian - Spassky World Championship Match (1969), Moscow URS, rd 9, May-05
Benoni Defense: King's Indian System (A56)  ·  1/2-1/2

ANALYSIS [x]

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Kibitzer's Corner
Mar-04-03  Bears092: When the game was adjourned at move 40, spasskys aides calculated the exact position up until move 46. For an unknown reason, Spassky deviates from his seconds' anaysis with 46. Rab2

46. a5 was the line they planned...

Sep-08-06  whatthefat: This game really makes me laugh! I feel as though it should be put to music.
Jan-26-08  JimmyVermeer: Sammy Reshevsky gives White's 65th move as Qh2. He was probably mistaken though.

What kind of music, whatthefat? Circus music?

Bears092, did Spassky have access to his aides' analysis? That would seem to me like cheating, if he allowed them to give him advice.

Apr-06-08  Knight13: <29...Rxf3> No, I don't think that exchange sacrifice does anything. Useless.
Dec-26-09
Premium Chessgames Member
  wwall: Perhaps best is 46.a5 bxa5 47.Nxa5 Rb6 48.Nc6 Bxc6 49.dxc6 Nf8 50.Ra5 Nfe6 51.Kd1, favoring White
Jun-01-12  Everett: <Knight13: <29...Rxf3> No, I don't think that exchange sacrifice does anything. Useless.>

It is an exchange sac for a pawn, and Petrosian's LSB bishop remains on the board.

Looks like Spassky couldn't do much with the material.

Aug-19-14  Zhbugnoimt: Spassky was winning at some point, maybe even in the finlal position
Aug-19-14
Premium Chessgames Member
  Fusilli: <Zhbugnoimt: Spassky was winning at some point, maybe even in the finlal position>

Hard to believe, since they have been spending the last 30+ moves shuffling pieces around without white making progress. The pawn break on the queenside does not seem to have altered things.

Aug-19-14  RookFile: When you build a dam like Petrosian did, either the whole thing holds or a decisive break tears the whole thing down. There is no in between.

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