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Iivo Nei vs Tigran Vartanovich Petrosian
"Nei Deep" (game of the day Aug-01-2010)
USSR (1960)
Benoni Defense: King's Indian System (A56)  ·  1-0
ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 4 OF 4 ·  Later Kibitzing>
Jan-13-15  zb2cr: With Black threatening mate by ...♕f1, White has to do something fast. Fortunately, the position has a ♕ sacrifice, more like a Monday than a Tuesday. 32. ♕g8+, ♔xg8; 33. ♗e6+. Notice the double check. Without that, Black could block the ♖ check by retreating his ♗. With the double check, the only move, of course, is 33. ... ♔h8, answered by 34. ♖g8#.
Jan-13-15  ndg2: Black came never out of the defense with any counter play the whole game. Pretty rare sight for a Petrosian game.
Jan-13-15  swordfish: Indeed it's surprising to see Petrosian, with his tactics and especially his legendary defensive skills, get mated in such a way.
Jan-13-15
Premium Chessgames Member
  varishnakov: 33.Q-N8+ KxQ 34.B-K6++ K-R1 35.R-N8 mate

queen sac to expose king to deadly double check followed by mate

Jan-13-15
Premium Chessgames Member
  Penguincw: Aww! I missed 34...Kh8, but I definitely would've saw it OTB.
Jan-13-15  KingsPawns: Qg8 is like poetry. Bravo!
Jan-13-15
Premium Chessgames Member
  gawain: Stunning! Easy to see, sure. When you know it is a Tuesday puzzle, you first try the boldest move available. But exceptionally beautiful nevertheless.
Jan-13-15  TheaN: Tuesday 13 January 2015 <33.?>

Nei scalps Petrosian with a prosaic clearance involving a double check. <33.Qg8+!> lures the black king into the double check, <33....Kxg8 34.Be6++> clears the g-file white was looking for <34....Kh8 35.Rg8#> and the rook now doesn't need the queen to mate as the bishop replaced her.

The queen-lure is a common setup for a fatal doublecheck. I think what this game shows is that a rook-bishop battery, although not the strongest available, is not to be underestimated.

Jan-13-15
Premium Chessgames Member
  keypusher: <PhilFeeley> See "g." on this page for why chessgames classes 32.d7 as a knight sacrifice (and doesn't class 33.Qg8+ as a queen sacrifice).

Sacrifice Explorer Help Page

Jan-13-15  Chess Dad: Looks like a Queen Sac Tuesday.

33. Qg8+ Kxg8 (forced)
34. Be6++ Kh8 (forced)
35. Rg8#

Jan-13-15
Premium Chessgames Member
  patzer2: Petrosian was a great positional player and was well versed in opening theory.

However, the maneuver 13...Bf6 and 13...Be7 to anchor the backward d-pawn and centralize the Bishop seems awkward and a bit slow.

Perhaps better here might have been 13...f5 when play might continue 13... f5 14. exf5 gxf5 15. Be2 Nb6 16. Ne4 Qxd2+ 17. Nxd2 Bd7 18. a5 Nc8 19. O-O Nf4 20. Bxf4 exf4 21. Nxf4 Bxb2 22. Rb3 Bd4+ .

Fritz 12 gives its first choice here as 13...Nb5 when play might continue 14. b3 Nd7 15. Ra2 Nf4 =.

Jan-13-15
Premium Chessgames Member
  CHESSTTCAMPS: White is down a piece, but has a dangerous passed pawn on the 7th. This distraction may have caused the very famous defender to overlook a tactical coup:

33.Qg8+!! forces mate-in-3.

This puzzle is perfectly timed - I was very recently thinking about examples to teach children the power of the double check.

Jan-13-15
Premium Chessgames Member
  patzer2: Petrosian's 15...f5 break comes a bit too late, as Fritz indicates White is winning after 16. exf5 gxf5 17. f4 Ng5 18. fxe5 dxe5 19. g3 (+ 1.77 @ 20 depth).
Jan-13-15  TheTamale: Whoa... I JUST BEAT PETROSIAN.
Jan-13-15
Premium Chessgames Member
  patzer2: White's 32. d7!! is the only winning move there (32. ?) and worthy of a weekend puzzle solution. Fritz 12 @ 21 depth gives best play as 32.d7!! h5 33.Bh3 h4 34.Rg2 Nxd7 35.Bxd7 Rf8 36.Nf2 e4 37.Qg5 Kh7 38.Qxf6 Rxf6 39.Rg4 Rd6 40.Rxh4+ Kg7 41.Bc8 e3 42.Ne4 (+ 2.73).

Perhaps Petrosian saw this and decided to let White end the game quickly with a pretty double discovered check and mate after 33...Bxd3? 34. Qg8+ Kxg8 35. Kh8 Rg8#.

Jan-13-15
Premium Chessgames Member
  Castleinthesky: A very straightforward "diversion" puzzle. The queen sac forces white's king into a double check and mate. The rest of the week is always much harder, so I am glad to take this one.
Jan-13-15  Strelets: 33.Qg8+! Kxg8 34.Be6+ Kh8 35.Rg8# Effective demonstration of one of my favorite tactical devices by Spassky's future tennis partner: the double-discovered check.
Jan-13-15
Premium Chessgames Member
  Longview: I did not see that one coming at all. <TheTamale> I am Petrofina.....you beat me.

Goodness do I have a lot to learn!

Jan-13-15  BOSTER: Playing 12.Ra3,when Nc3,Be3,pawnf3 were filled the 3 rank, and then Nd3 came here, did white really see 25.Rg3 on the open "g" file?

Maybe pieces who have <early development> have a great future.

Jan-13-15  Edeltalent: This looks like a typical case of "forgot that takeback is not automatic". I can imagine Black was already pondering over the next move after 33.Qxd3, when 33.Qg8+ was a rude awakening. Uncharacteristic for Petrosian, who was well known for an incredible sense of danger. Possibly the bishop was on g6 before (where he kept the g-file closed), so Qg8 was not a threat before.
Jan-13-15
Premium Chessgames Member
  chrisowen: Swan free dive d5 a scripture ignoble g8

mission gate back in the frame it was g6 take try down in d3 gives rise d5 up on time rubbers g8 a mate in two ever tickle g8 under f6 saw fit stay put kind of again success at black threatens a mate in one by himself g8 comes first though bind bed in pedal a pew taken am g8 and uncover am g3 and alf in e6 double check sees the day won rages g6 in d3 rumble on gauge great giveup low in cave d5 victor glide an g8 lesson slide e6 after guild efface the lily am g3.

Rook seals a tomb back combine g8 an g3 way walk the plank quick mellow hit a fifth of cool have aid g8 as sprung bock in a flute e6 plush enough it lift d5 in level jod shopper g8 evermore cascade style e6 way am g3 route again smother g8 escry in lights favour as put in flurry it book in faith e6 have saint arm g4 l0 win hails inert e6 free.

Gas rook winch am g8 pain trivial good despatch king's a flap engages a bod very d5 superior judgement back bodger scathe in as

glory g6 had to stay put and march up at h5
as i fly in bodes well at he do bind

exhonorate again have mister in a jiffy g6 bag try dip down a no go ok gap at take down d5 up on tread g8 low in mind diddy a miss over ignoble g8 up ply in light wins a vow an g6 lesson short thrift in d3 rumble on.

Jan-13-15  dfcx: Hmm Queen sac on Tuesday and Rook sac on Monday. Does CG want to start a new tradition for 2015?

33. Qg8+ Kxg8
34. Be6++ Kh8
35. Rg8#

Jan-13-15
Premium Chessgames Member
  Domdaniel: "The end is Nei".

As Black is threatening mate in one, 33.Qg8+ would seem to be indicated.

Jan-13-15
Premium Chessgames Member
  tamar: Iivo Devo in action
Jan-13-15  TheBish: I Nei vs Petrosian, 1960

White to play (33.?) "Easy"

I remember seeing this somewhere, probably in a tactics book. Not sure if this helped me see it in under 10 seconds, or if it's just that easy! White is down a piece, and it's fair to assume that Petrosian expected recapture of the bishop on d3 to restore material equality. White's move must have struck him like a thunderbolt!

33. Qg8+! Kxg8 34. Be6+ Kh8 35. Rg8#.

The power of the double check strikes again!

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