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Boris Spassky vs Tigran Vartanovich Petrosian
Petrosian - Spassky World Championship Match (1966), Moscow URS, rd 13, May-11
Caro-Kann Defense: Classical Variation. Main lines (B18)  ·  1-0
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Kibitzer's Corner
Oct-20-06
Premium Chessgames Member
  kevin86: Could this be a time forfeiture? Certainly black still has play for a draw here. I don't see how white can make progress in the final position.
Oct-20-06  Billy Ray Valentine: I think this is a win for white. I don't see how black can stop Rc6+ followed by Kg5 and Kxh5. At that point, I would think the R+P could force a win against the lone B. Another line that I looked at for Black is 91...Bf6 92. Rc6 Kg7 93. Kf5 Bd8 94. Rd6 Ba5 95. Kg5 and I find it difficult for black to hold, but perhaps I'm missing something in my overall analysis... I only spent a few minutes on this!
May-02-07  goldenbear: I think that this is one of both players' best games. So much personality.
May-02-07  goldenbear: 37.Nd5 really is much better.
May-29-07  xombie: I would have loved to see Petrosian draw here. It could have been yet another king march+exchange sac triumph.
Sep-09-07  Maynard5: Petrosian's defensive play here is tenacious, as always, but in the end not enough to hold the position. Spassky's play during the opening is extremely sharp, and after move 23, the threat of Nc5 almost forces Black to try the exchange sacrifice. Black's defense in the subsequent endgame is that most of the pawns have been eliminated, and the existing ones are isolated. Even so, it is surprising that White is not able to win more rapidly.
Sep-09-07  Elxiddicus: <kevin86> According to 6-piece tablebase, it's a mate in 28. http://www.k4it.de/index.php?topic=...
Dec-01-07  tyimfi: John Watson annotates (in Mastering the Chess Openings Volume 1): 10 Qe2!, 14 Ne5!, 18...f6!?, 22 Ne4!
Feb-29-08  Knight13: <Elxiddicus: <kevin86> According to 6-piece tablebase, it's a mate in 28.> Petrosian saw mate in 28 and resigned? Wow...
Feb-29-08  euripides: According to Wade/O'Connell, Petrosian sealed 91...Bg7 but then resigned. Black's drawing chances would depend on using the bishop to snipe at g3 while White tried to win the pawn on h5; presumably adjournment analysis established Black couldn't implement this idea satisfactorily.
May-29-08
Premium Chessgames Member
  Garech: That is what chess is all about; what a brilliant game.
May-29-08
Premium Chessgames Member
  Jim Bartle: Rated #4 in the very first Informant.
Feb-19-09  sillybilly47: Spassky had to feel great after this one. Who were Spassky's seconds in this match? Tough,tough win by Boris. He lacked this toughness against Fischer six years later.
Feb-19-09  nescio: <sillybilly47: Spassky had to feel great after this one.> Only for a while. After this game and espcially after the next Spasski realized the better how extremely hard it was to win against Petrosian. <Who were Spassky's seconds in this match?> As far as I remember both players were assisted by their trainers, Spasski by Bondarevsky, Petrosian by Boleslavsky.
Apr-14-09
Premium Chessgames Member
  kevin86: Spassky's first WC win in game thirteen-strange how six years later,he loses a marathon to Bobby Fischer in the 13th game as well. That game was the death knell for him as he drew seven straight and resigned by phone in game 21 to end his brief title run.
Jun-18-09
Premium Chessgames Member
  HeMateMe: 91 moves! Spassky gives the boa a little squeeze of his own...
Sep-25-10  Whitehat1963: Wow! What a long, complicated fight. Bravo!
Feb-11-12  rannewman: can anyone explain the win after 59...BXc5? The best I can think of is 60.Bxc5 followd by Ra8..but I realy doubt it's going to be enough to win, with only 1 white pawn left and very active black pieces..
Feb-12-12  bronkenstein: <rannewman>, on <59...Bxc5> , <60.Rf3+> followed by <Rc4> does the job.
Oct-25-13  Russo: It's nice to see two great players battle it out in an end game, instead of a draw.
Oct-25-13  SoUnwiseTheKnight B4: Black was fighting for the draw in this endgame. Had white offered one it would have been accepted real quick.
Nov-28-15  Ulhumbrus: <Maynard5: ... after move 23, the threat of Nc5 almost forces Black to try the exchange sacrifice...> This suggests that the move 18...f6 is a major concession, isolating and weakening Black's e pawn, a weakness which leads to the exchange sacrifice.

Instead of this 18...Rd7 prepares to double rooks on the d file

Sep-30-18  Albion 1959: Spassky's first win against Petrosian in his 23rd attempt! And it took 91 moves played over two sessions to do it.
Feb-02-19  woldsmandriffield: The decision to play 89 Rxc6 is interesting. 89 Bxe5 Nxe5+ 90 Kg2 is also winning but tougher. However, 89 Rxc6 Bxb2 is only won with White having the move and would be drawn with the Black-squared Bishop on a3, d4, g5, e7, d2, or e1. Furthermore, after the exchange of pieces, Spassky's only winning move is the one played: 90 Rc5+
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