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Viktor Korchnoi vs Tigran Vartanovich Petrosian
Korchnoi - Petrosian Candidates Semifinal (1974), Odessa URS, rd 1, Apr-12
English Opening: Anglo-Indian Defense. Queens Indian Formation (A17)  ·  1-0


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Given 7 times; par: 59 [what's this?]

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Kibitzer's Corner
Premium Chessgames Member
  offramp: How often was Petrosian checkmated?
Feb-24-05  who: 35...Rg6 looks like it cold hold for Petrosian. Amazing that Petrosian missed a mate in 1.
Jun-17-05  aw1988: <who> Suprisingly, Petrosian may have already been lost! 35...Rg6 fails to 36. Nxh6.
Premium Chessgames Member
  offramp: Or 36.♖xh6+ which might be faster.
Jun-18-05  Hesam7: Can <crafty> look into 35...Rg6 ?
Premium Chessgames Member
  Gregor Samsa Mendel: According to Robert Byrne, after 35...Rg6 36 Rxh6+ Rxh6 37 Qxh6+ Kg8 38 Rf1, 39 Rf3 and 40 Rg3+ "would have been impossible to cope with."
Jun-18-05  aw1988: Well, yeah, Rxh6+ is quicker, but I chose a more aesthetic route.
Oct-30-06  MadBishop: A very pretty mate! I love this positional variation to the English!

9.b3(9.Re1 aiming at d4) 9. ...Na6?!(9. ...Nbd7 10.Re1 Qc7 11.d4 cxd4 12.Nxd4 a6)

11.Bh3!(aiming at f4)

17.Rb1(17.Nxf6? Qxf6) 17. ...Bd4+(better is 17. ...Bg7 18.f5 Nd4 19.Bg4 Nf6 20.Bg5 Bxd5 21.cxd5 h6=)


21. ...Nf6(21. ...g5[aiming at h5] 22.Bg4 Be5; 22. ...Nf6 23.Nc2! Be5)

Oct-30-06  MadBishop: Carrying on...

23. ...Qe8(better is 23. ...Qc7)

26.Bg4(aiming at 27.f6) 26. ...Rg8?(26. ...gxf5 27.Nxf5 Nxf5 28.Rxf5[28.Bxf5 Ng7] 28. ...f6!; 26. ...f6)


28.Qh4(aiming at 29.Bh6)


35.Qg5! Re8??

It makes you feel good to know that even GM's make terrible blunders some time. Other than that a great kingside attack by Korchnoi, well rewarded with a picturesque mate!!

Oct-30-06  setebos: Petrosian was never the same after his match with Fischer.
Oct-30-06  positionalbrilliancy: What happened to him, pyschological blow?
May-11-07  Ulhumbrus: According to Robert Byrne in his book on the 1974 candidates matches, by 28 Ng4 Korchnoi "has pushed his attack beautifully". Two of Korchnoi's moves retreat a N. Thus 19 Nde3 withdraws the N on d5 to e3 while 22 Nc2 pulls the Ne3 back further to c2. This suggests that an attack which is pushed beautifully includes moves which withdraw a piece instead of advancing it.
May-14-07  Ulhumbrus: According to Robert Byrne in his book on the 1974 candidates matches, by 28 Bg4 Korchnoi "has pushed his attack beautifully". Two of Korchnoi's moves retreat a N. Thus 19 Nde3 withdraws the N on d5 to e3 while 22 Nc2 pulls the Ne3 back further to c2. This suggests that an attack which is pushed beautifully includes moves which withdraw a piece instead of advancing it.
Dec-02-08  Ulhumbrus: After 35...Rg6 36 Rxh6+ Rxh6 37 Qxh6+ Kg8 38 Rf1 ( Gregor Samsa Mendel quoting Robert Byrne) one variation is 38...Qf6 39 Qh3 Qh8 40 Ngh4 Be5 41 Qg4+ Kf8 42 Ng6+! fxg6 43 Nh6+ Kg7 44 Rf7+! Kxh6 45 Qh4 mate
Dec-02-08  Riverbeast: "Checkmate, fool!"

Korchnoi got his revenge for all the negative things Petrosian said about him in the press....And perhaps some revenge for **allegedly** having to throw the 1971 candidates match against Petrosian.

After he defected, he beat Petrosian twice in candidates matches

Premium Chessgames Member
  kingscrusher: RIP Korchnoi
Jun-07-16  posoo: dats rite dats RITE, eat a BULLMUFFIN Tigroon! Aint NO stopping da NOBBICUS when he gets a-rollin'!

Lolololol look at da man missing da MATE. I bet u if tornament sluggos like Mr. Caviar played blits in da park theyd get their KING TOOK half da time!

Premium Chessgames Member
  zanzibar: Here's GoK -

<The opening in the first game [..] came as a surprise to me, but I played calmly, obtained slightly the better chances, and, most important, a fairly clear plan by which to strengthen my position. Petrosian became nervous, made.several mistakes, came under an attack, and in the end did not manage to resign in time, and was mated.>

The moves are so close to the time control, and Petrosian was playing so unlike himself that I can't help thinking it was time pressure that caused him to be mated.

I all-too-often play in a mode like that, where I see how horrible a given move is, and upon spotting an alternative, just move it without actually calculating how much more horrible than the first move it is.

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