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Boris Spassky vs Tigran Vartanovich Petrosian
13th Soviet Team-ch final A (1975), Riga LAT, rd 2, Jul-??
Nimzo-Indian Defense: Normal Variation. Gligoric System Exchange at c4 (E54)  ·  1-0
ANALYSIS [x]

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Kibitzer's Corner
Jul-02-09  Knight13: 38. Bxa5 is better.

38...Bxb2 39. Rc7.

38...Ra8 39. Bb4 and White can enjoy the sweat and anxiety of Black while the a-pawn tries to reach Candy Land.

Oct-05-11
Premium Chessgames Member
  whiteshark: Why did Black resign here? Isn't <41...Ra8> a repetion of moves?


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Mar-04-14  Zugzwangovich: Any game between these two is of interest, but this one has me clueless. I do not pretend to understand what's going on most of the time, and cannot figure out why Petrosian resigned. He couldn't have lost on time since he'd already made 40 moves. I guess he studied the adjourned position and decided it was lost but I cannot see why. Perhaps he sealed a blunder?
Mar-04-14  SChesshevsky: <Zugzwangovich: Any game between these two is of interest, but this one has me clueless. I do not pretend to understand what's going on most of the time, and cannot figure out why Petrosian resigned.>

A great game by Spassky. Here's my take on what's going on.

Around move 10. exd4 it's pretty standard Nimzo-Indian idea where Black gives White the isolated QP for lack of mobility and development.

11...Qa5 was very committal to pressuring Nc3 which seemed stange given White had already vacated the King. It left Nf6 weak however allowing White's N to slip away and leaving Black somewhat out of position.

By 15. Nc5 White seems to have plenty of time to mobilize his pieces looking for Black to weaken. Black's still trying to rearrange his pieces to get to the IQP.

19. Qg4 White has time to also threaten the Kside.

23. Rc7 Black's in trouble now. White invades with no pressure on his IQP, still with threats on the Kside.

28.. exd5 now Black has to worry about his IQP with uncoordinated pieces allowing White time to control the c-file and keep strong pressure.

41. Ne6 I think the threat Nd8 then Nf7 or Nd4 then Nc6 ends up getting Black's a-pawn at a minimum.

Mar-04-14  Zugzwangovich: <SChesshevsky> Thank you! I really appreciate your comments and they will help me enjoy the game, as I always hope to do when seeing former WCs go at each other.
Dec-10-17  ZonszeinP: Hello,

One of the problems we have here is that it appears that the game is not correctly annotated to the end.

Spassky's last move was Na6 (rather than Ne6. Which probably also wins!)

Black is paralysed.

This is a brilliant game by Spassky.

And settles the "issue" between Spassky and Petrosian, if there was any...

Sep-30-18  edubueno: La partida fue suspendida en la jugada 40, siendo 41 Ce6 la secreta. Las negras están perdidas y seguir jugando sería solamente para sufrir. +2.15 (25 ply) 41.Ne8 Bb8 42.Rc5 Nh6 43.Bd3 Rb7 44.Rb5 Rxb5 45.axb5 Nhf5 46.g3 Kg8 47.Bxa5 Kf7 48.Nc7 Bxc7 49.Bxc7 Ke6 50.Kf2 Nd6 51.Kf3 Nef5 52.Bxd6 Nxd6 53.Ke3 g6 54.Kd4 Ne4 55.b6 Kd6 56.b7 Kc7 57.Kxd5 Nf2 58.Bc4 Kxb7
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