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Tigran V Petrosian vs Lev Polugaevsky
9th Soviet Team Championship Final-A (1963), Moscow URS, rd 5, Aug-16
Queen's Gambit Accepted: Janowski-Larsen Variation (D25)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Mar-10-05  mellow: Very nice ending. Calm like a bomb.
May-20-06  fgh: Nice final shot.
Aug-23-06  notyetagm: I love Petrosian's play. Typically Petrosian castles late in the game but here he does not castle at all!

And the ending is magnificent. Here Black resigns after the thunderbolt 35 ♗xe6+!. It is based on one of my favorite tactical tricks: <a pawn on the 7th rank attacking an enemy knight on the 8th rank has -two- promotion squares to choose from (DOUBLE ATTACK)>.

White promotes his f6-pawn if the White light-squared bishop is taken using the tactical trick I mentioned above: 35 ... fxe6 36 f7 followed by either 37 f8=♕ or 37 fxg8=♕.

And if the White light-squared bishop is not captured, then Black loses all of his kingside pawns after 36 ♗xf7.

Aug-23-06  notyetagm: Anyone know if this game is in Vasiliev's book on Petrosian?
Dec-25-07  notyetagm: White to play: 32 ?


click for larger view

How does White (Petrosian) win from this position in just four(!) more moves? Simple: <PETROSIAN EVALUATES HIS FORCING MOVES LIKE A COMPUTER>.

He analyzes the <FORCED CHECKING SEQUENCE> 32 ♖d1x♖d8+ ♔e8x♖d8 33 ♕f4-b8+ ♕c5-c8 34 ♕b8x♕c8+ ♔d8x♕c8, which is shown below.


click for larger view

What does Petrosian see? He sees that these <FORCING MOVES> have dragged the Black e8-king away from the advanced and -very- dangerous White f6-pawn.

The result of this <FORCING PLAY>? Petrosian now has an instant win with 35 ♗b3xe6+!, as I discussed above.


click for larger view

Note how simple the win was to find by simply looking at -the- most <FORCING> line of play! :-)

I am harping on this idea of <FORCING MOVES> right now because I saw that NEW IN CHESS is going to publish a tactics puzzle book on this idea in March 2008. This book is called <"Forcing Chess Moves"> by the American Master Charles Hertan; details are available at http://www.newinchess.com/Shop/Prod....

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On the Author:
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Feb-19-09  arsen387: Outstanding final blow by Petrosian. I just wonder why not 27..Qxc1?
Feb-19-09
Premium Chessgames Member
  beatgiant: <arsen387>
After 27...Qxc1 28. Rxc1 Rxc1 29. Qe4 looks strong, threatening Qa8+ or Bxe6.
Feb-21-09  arsen387: thanks <beatgiant>, I gave the position after 27.Rc1 to Chessmaster10 and it shows that 27..Qxc1 is the best move for blacks with following continuation 27...Qxc1 28.Rxc1 Rxc1 29.Qf4 (if Qe4, then Nxf6 gives a slight advantage to blacks with a probable draw) Kd7 (not Rhc5 30.Bxe6 fxe6 31.f7+ Kf8 32.fxg8=Q+ Kxg8 33.Qf6 and +1.4 for whites) and whites have only a very slight advantage, about +0.2. According to engine black's 31.Ke8 was a blunder, but already in a difficult position (+1.1). The lines are given at 13ply, so they can be not entirely right.
Feb-21-09
Premium Chessgames Member
  beatgiant: <arsen387>
Your engine is right, 27... Qxc1 28. Rxc1 Rxc1 <29. Qe4> is weak because 29...Nxf6 and 30. Qa8+ doesn't do much damage.

But how about 27... Qxc1 28. Rxc1 Rxc1 <29. Qd6> so that 29...Nxf6 30. Bxe6. Black's position looks a bit shaky to me.

Feb-22-09  arsen387: <beatgiant> seems like your line is also a draw, interesting line is 29.Qd6 Nxf6 30.Bxe6 Rc2+ 31.Kf1 (Ke1 then Rxh4) Rxf2 32.Kg1 Rxb2 33.Bh3 Rb1+ 34.Kg2 and blacks can force a perpetual with Rb1+ and Rb2+, as whites can't move their K from that 2 lines in view of N or R forks.

Anyway, in case of perfect play by 2 sides, whites will have only a very slight advantage in view of black's bare K, which of course isn't sufficient for a win. Maybe by playing Rc1 Petrosian saw that he'll have at least a draw, and then capitalized on black's mistakes

Feb-19-11  Bryan14: what about 31.RXg6 - XG6 followed by 32BXe6 ..?what ever was the next black move .. 33.f7 would be a killing move followed by queen checks ..
Feb-19-11
Premium Chessgames Member
  Sastre: <Bryan14: what about 31.RXg6 - XG6 followed by 32BXe6 ..?what ever was the next black move .. 33.f7 would be a killing move followed by queen checks ..> If 31.Rxg6 fxg6 32.Bxe6 then 32...Qc2+ 33.Kf3 Qc6+ 34.Qe4 Qxe4+ 35.Kxe4 Nxf6+ is good for Black.
Feb-19-11  cunctatorg: A great game between a truly great player and one greatest!! A lovely game, a profound concept, a seemingly perfect conduct of the plan; like music or mathematics!
Jun-23-17  kungfufighter888: white move no.35 is the killer.

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