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Krum Georgiev vs Nikolai Andrianov
Athens (1991)
Sicilian Defense: Nezhmetdinov-Rossolimo Attack (B30)  ·  1-0



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sac: 24.Rxe6+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
Aug-16-13  nalinw: I saw 17. Bxg7 and that Black would be mated if 17 .. Bxg7 and in trouble plus a pawn down after 17 ..Rg8 .

Did not analyse after winning the exchange. Seems a lot easier that the last two days ...

Premium Chessgames Member
  offramp: One would hardly believe that black, rated 2400+, could arrive at such an undeveloped position.
Premium Chessgames Member
  al wazir: I guess I'm missing the point. 17. Bxg7 is obvious. After 17...Rg8 18. Bxf8 Rxf8 (18...bxc4 19. Bxd6) 19. Nxd6, white is up a ♙ and is set to win more material from an undeveloped black. The game line, 17...bxc4 18. Bxh8 puts white up an exchange, and black is still undeveloped. The rest of the game is an anticlimax.
Premium Chessgames Member
  rodchuck: What happens after 17 Nxd6 Bxd6 18 Be5; seems like white also has an enormous advantage? If 18 Ke7, 19 Qg3 keeps up the pressure...
Aug-16-13  trnbg: <rodchuck>: It seems that after 17. Nxd6 Bxd6 18. Be5 Rb6 19. Qg3 Ke7 it's not so easy for White to find a winning continuation.
Aug-16-13  woody b: <al wazir>
after 27. ...Rg8 28. Bxf8 Rxf8 19. Rxd6
is much stronger!
e.g. 19. ... Qe7
20. Red1 bxc4
21. Qc6+ and mate soon
Aug-16-13  SilverLining: The idea after 17. Nxd6 would be to follow with Qc6+, I believe.

al wazir, after ...Rxf8 19. Nxd6(check!), the black king must run to d7 or e7, and both squares are a death sentence for his queen.

Aug-16-13  stanleys: I like the final combination: chasing black's rook from the 5th rank, rook sacrifice, followed by the quiet move 26.Re1
Aug-16-13  Nick46: <offramp: One would hardly believe that black, rated 2400+, could arrive at such an undeveloped position.> Yes, macho play by Nikolay; Queen ran around exhausting herself and his majesty the King didn't even bother to castle.
Aug-16-13  morfishine: The nice deflection<17.Bxg7> pries Black's position open like an Otter eating a clam

(1) 17.Bxg7 Bxg7 (17...bxc4 18.Bxh8) 18.Nxd6+ Kd7 19.Nxf7+ Kc7 20.Qg3+ Kc6 21.Nxd8+ Kb6 22.Qxg7

PM: Black actually did give up the exchange, not that it mattered


Aug-16-13  Abdel Irada: <morfishine: The nice deflection<17.Bxg7> pries Black's position open like an Otter eating a clam>

I especially like the way Georgiev holds Andrianov's kingside on his chest while hammering at it with a rock until he breaks through the shell, obtaining access to the delicate morsels inside.

I remain, however, mystified as to why Black was imitating a clam (with almost no development or other sign of life) in the first place.

When one does that, it hardly matters whether one's opponent plays like Georgiev in this game ("Why, I otter just....") or a hyperpositional Petrosian or Karpov (prying him gradually but inexorably open like a starfish). Either way, one will get munched. It's just a matter of how and when.


The line that gave me momentary pause was 17. Bxg7!, Rg8 18. Bxf8, Bb7. Then I looked further, and saw that after 19. Nxd6†, Qxd6 20. Bxd6, Bxf3, White has 21. Bxb8, and need not fear any capture on g2 because Black has nothing with which to follow it up.

Aug-16-13  The HeavenSmile: <morfishine> Otters are too weak to prise open a clam, they use rocks to smash them open (which is hugely adorable This too is also an apt analogy for Bxg7
Aug-16-13  Abdel Irada: <The HeavenSmile: <morfishine> Otters are too weak to prise open a clam, they use rocks to smash them open>

I thought I just said that. :-D

<which is hugely adorable>

Not if you're the clam.

Aug-16-13  patzer2: <al wazir: I guess I'm missing the point. 17. Bxg7 is obvious.> Well I would have played it in Blitz, but I'm glad is occasionally providing Friday combinations that will help novice players.

The combination does illustrate at least two basic combination themes, including deflection or removing the guard [17. Bxg7] and the discovered check [17. Bxg7 Bxg7 18. Nxd6+ Kd2 (18...Ke2 19. Qf2#) 19. Nxf7+ winning the Queen].

Aug-16-13  psmith: I saw what pretty much everyone else saw... the best defense seems to be 17...Rg8 18. Bxf8 bxc4 19. Bxd6 Bb7 20. Qc3! however. (with help from Fritz)
Aug-16-13  kevin86: A corny puzzle...with a corny solution.
Premium Chessgames Member
  Jimfromprovidence: There is counter play here after 17...Rg8 18. Bxf8 bxc4 19. Bxd6 Bb7.

click for larger view

The threat is 20...Rxg2+, followed by 21..Qf6.

<psmith> has a nice response, 20 Qc3. I also like 20 Qe3, below.

click for larger view

Black can still play 20...Rxg2+, but after 21 Kf1 he has to play 21...Rg8 or 21...Rg6 to avoid 22 Qh6 (seeing 23 Qf8+). Then white can win the exchange after 22 Bxb8.

Premium Chessgames Member
  agb2002: White has one bishop and one night for the bishop pair and one pawn.

Black threatens 17... bxc4 and 17... Bb7.

White has a number of moves: 17.Qc6+, 17.Rxd6, 17.Ba5, 17.Bxg7, 17.Nxd6+, 17.Ne5, etc.

The simplest option seems to be 17.Nxd6+ Bxd6 (17... Kd7 18.Nxf7+; 17... Ke7 18.Qxf7#) 18.Be5, taking advantage of the pinned bishop:

A) 18... Rb6 19.Qg3

A.1) 19... Ke7 20.Qxg7 Bxe5 21.Qxe5 Bd7 (21... Qg8 22.Qc7+ Kf6 23.Qxb6) 22.Qc5+ Kf6 23.Rxd7 Qxd7 24.Qxb6 and White is one pawn ahead with better position.

A.2) 19... Rg8 20.Bxd6 Rc6 (20... Bd7 21.Bc7 and 22.Bxb6; 20... Qf6 21.Bc7 and 22.Rd8+) 21.Bb4 Qc7 22.Qh4 looks good for White.

B) 18... Rb7 19.Bxd6 Rd7 20.Qg3 followed by c4-c5 looks very good for White.


Another option is 17.Bxg7:

A) 17... Bb7 18.Qh5 (threatening Rxe6+ and Bxh8)

A.1) 18... bxc4 19.Rxe6+ Be7 (19... Kd7 20.Rexd6+ Bxd6 21.Rxd6+ looks winning) 20.Bxh8 + -.

A.2) 18... Rg8 19.Rxe6+ Be7 (19... Kd7 is similar to the previous subline) 20.Nxd6+ wins the queen or delivers mate.

B) 17... Rg8 18.Bxf8

B.1) 18... Bb7 19.Nxd6+ Qxd6 (19... Kxf8 20.Nxb7; 19... Kd7 20.Nxb7+) 20.Bxd6 Bxf3 21.Bxb8 wins.

B.2) 18... bxc4 19.Bxd6 Bb7 20.Qe3 Rxg2+ 21.Kf1 Rc8 22.Qh6 Rg8 23.Rxe6+ seems to win.


I don't know. I think I'd play 17.Nxd6+.

Aug-16-13  cyclon: I'd start with 17. Bxg7 Bb7 ( 17. -Rg8 18. Bxf8 Bb7 19. Nxd6+ Qxd6 20. Qxb7 wins and 17. -Bxg7 18. Nxd6+ wins as well ) 18. Qh5 Qd7/Qc8 19. Bxh8 wins the exchange, because 18. -Qc7 19. Rxe6+ White will have a winning attack and on 18. -Rg8 20. Rxe6+ also.
Aug-16-13  MiCrooks: I did see at least one person point out that after Bxg7 Rg8 Bf8 Black doesn't have to and in fact should not take back with the Rook. Instead bxc4 leads to a much more complicated position where it is easy for White to screw up. The Black Bishop can come to b7 with tempo on the Queen with a double attack on g2. If White is not careful his advantage can evaporate.

It is also opposite colored bishop, but this is not and endgame yet, so it just tends to add fireworks to the attacks since they cannot oppose each other.

So after Bxd6 Bb7 White needs to find the right place for his Queen. Several locations work, but trading down to win the exchange does not guarantee a win in this position. Black's Bishop is likely to prove the equal to White's Rook with Kings in the open and Queens on the board.

Rather than Qe3 as proposed by Jim, Qf5! taking advantage of the pin of e6 also threatens the calamitous Rxe6! So Black gets to grab a pawn back and open White's position too with Rxg2+, but then needs to retreat back with Rg6 to defend e6.

White still needs to be careful as Bxc8 squanders his advantage to Bg2+ where White has the choice of walking into Kg1 Qxc8! where he now has a struggle on his hands, or Ke2 allowing exf5 Rxd8 + Kxd8 where White has a slight advantage but the opposite colored bishops are drawish.

Instead Qe5 threatening just to take the rook leads to Rc8 Qh8+ Kd7 Bc7+ Kxc7 Rxd8 Bg2+ followed by Rxd8. But in this position White's Queen is clearly better than the B+R.

Still, much better than the line played which really gave no chance to Black.

Aug-16-13  patcheck: After having analyzed (and lost a big part of what I had written) many variations (Qc6, Nxd6, Rxd6, Ba5, Ne5, Bxg7), my conclusion is that the best line is : 17. Bxg7 (or maybe 17. Nxd6 although after 17… Bxd6, I didn’t find a winning line for white), winning with many answers, for instance :

17. … Bxg7 18. Nxd6+
17. … Bb7 18. Qh5 (with the threat 19. Rxe6+)
17. … bxc4 18. Bxa8

But, on 17. … Rg8 (which seemed to me the best answer for black) 18. Bf6 Bb7, I didn’t find a winning line.

So, time to check.

Premium Chessgames Member
  Jimfromprovidence: <MiCrooks> That move after 17...Rg8 18. Bxf8 bxc4 19. Bxd6 Bb7 you saw, <20 Qf5!>, below, (seeing 21 Qe5) is pretty righteous.

click for larger view

As you stated, there are these one-two threats. The first is 21 Rxe6+, which black handles after 20...Rxg2+ 21 Kf1 Rg6. Then the second threat of 22 Qe5 emerges, below.

click for larger view

Great post.

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