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Leonid Stein vs Lajos Portisch
Stockholm Interzonal (1962), Stockholm SWE, rd 12, Feb-14
Sicilian Defense: Kan. Modern Variation (B42)  ·  1-0


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Given 64 times; par: 23 [what's this?]

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sac: 19.Nxg7 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 4 OF 4 ·  Later Kibitzing>
Nov-15-10  sevenseaman: The Black K dreading someone will take his White N away! Ha ha!
Nov-30-10  Albertan: Gennady Nesis analyzes this game in his book "Tactics in the Sicilian". Nesis calls this game "A little masterpiece."
Jul-09-13  Conrad93: Houdini really likes 14. Rxf6, but it only leads to a draw.
Dec-02-13  Conrad93: Oh, never mind. 14. Rxf6 is even stronger.
Jun-28-14  yadasampati: Beautiful combination: 19. Nxg7! Bxc4 20. Bf6! Suppose black plays 20. ... Bxe2 instead of Be7, white finishes with 21. Nf5+ Kg8 22. Nh6#
Premium Chessgames Member
  FSR: Probably 19.Nxg7 Bxc4 20.Bf6 - but I would be scared to death to play this.
Jun-28-14  Cheapo by the Dozen: Maybe I'm missing something, but it looks like the Nxg7/Bf6 plan smashes Black. Lines include:

19 Nxg7 Kxg7
20 Bf6+ Kg8
21 Qh5

and Black can't avert both of Qg5# and Qh6/Qg7#.

19 Nxg7 Kxg7
20 Bf6+ Kh6
21 Qd2+

and Qg5# quickly follows.

19 Nxg7 Kxg7
20 Bf6+ Kg6
21 Rd3 h6
22 Rg3+ Kh7
23 Rg7+

and White soon wins Black's queen.

19 Nxg7 Bxc4
20 Bf6 Bxe2
21 Nf5+ Kg8
22 Nh6#

19 Nxg7 Bxc4
20 Bf6 Kg8
21 Nf5 R(f)d8
22 Qg4+ Kf8

and mate soon follows because White's d-rook cuts off Black's flight.

19 Nxg7 Kg8
20 Nxe6 fxe6
21 Bxe6+

and White has won 2 pawns without ending his strong attack.

Jun-28-14  Cheapo by the Dozen: I actually saw the game line too, reinforcing White's grip on the long diagonal (although it's pretty short in this case); I just forgot to write it down.

So I nailed a Saturday problem after struggling all week. Go figure.

Premium Chessgames Member
  FSR: The game is annotated in Keene's book <Leonid Stein: Master of Attack>, p. 151, and also in Gufeld and Lazarev's <Leonid Stein: Master of Risk Strategy>, pp. 127-28.
Premium Chessgames Member
  al wazir: I got the first two moves, but not the crushing 21. Qf3.

But is it really crushing? After 21...Bxf6 22. Qxf6 Nd5 23. exd5 Qd8 24. Nh5+ Qxf6+ 25. Rxf6 cxf6, black's passed e-♙ could make a nuisance of itself; still, white is a piece up.

But white can play 23. Rxd5. Yes, I guess it is crushing.

Premium Chessgames Member
  agb2002: The material is identical.

Black threatens 19... B(N)xc4.

My first idea was 19.Bf6 Bxc4 20.Qg4 Rg8 21.Bxg7+ Rxg7 22.Qxg7#, but Black can play 19... gxf6 and White has problems.

Another idea is 19.Nxg7, weakening the black castle:

A) 19... Bxc4 20.Bf6

A.1) 20... Bxe2 21.Nf5+ Kg8 22.Nh6#.

A.2) 20... Rfd8 21.Ne6+ Kg8 22.Qg4#.

A.3) 20... h6 21.Qd2 Kh7 22.Nf5 wins.

A.4) 20... Be7 21.Qf2

A.4.a) 21... Bxf1 (or 21... Qb7) 22.Ne6+ and mate in two.

A.4.b) 21... Bxf6 22.Qf6 Nd7 (22... Kg8 23.Nh5 and 24.Qg7#) 23.Rxd7 Qxd7 24.Nf5+ Kg8 25.Qg7# or 25.Nh6#.

B) 19... Kxg7 20.Bf6+

B.1) 20... Kg8 21.Qd2 Rfd8 22.Qh6 Bf8 23.Qg5+ Bg7 24.Qxg7#.

B.2) 20... Kh6 21.Qd2+ and 22.Qg5#.

B.3) 20... Kg6 21.Rd3 with a mate attack.

C) 19... f6 20.Nxe6 wins a piece at least.

D) 19... Rg8 20.Nxe6 fxe6 21.Bf6+ wins the exchange at least.

Jun-28-14  goodevans: After <19.Nxg7> it seems black must play <19...Be7>. Then after <20.Nxe6 fxe6> black is a pawn down with the remaining pawns wrecked but at least he has staved off immediate defeat.
Premium Chessgames Member
  morfishine: Almost right, I had:

<19.Nxg7> Bxc4 20.Bf6 Bxe2 21.Nf5+ Kg8 22.Nh6#


Jun-28-14  Refused: 19.Nxg7 Bxc4 20.Bf6 this has to be winning
20...Be7 21.Qf3

Unless black has some strong resource I am missing the threats of uncovered checks and the Queen storming in has to be lethal.

Premium Chessgames Member
  Penguincw: After getting reasonably close the first 5 days of the week, I was nowhere close today. :|
Premium Chessgames Member
  kevin86: Missed it by that much... would you believe this much? ...OK ,how about this much?

Sorry about that, I didn't have a clue.

Jun-28-14  Nick46: By chance I guessed the moves 19. Nxg7 and even the crushing 21. Qf3 but the ones in between were shrouded in thick fog.
Jun-28-14  sombreronegro: I would say I don't find liquidating the bishop under fire on c4 with B X e3 unless its for an endgame because the attack is over I think. Though the pawns would be a mess. B to f6 looks like it can blockade the f7 pawn. But then the rook is coming to the g file.

A knight sac on g7 looks interesting, but still very speculative to me I just don't see much on the g file.

Maybe just Q h5 , sac the bishop baiting it to attack the rook for a rook lift to f3 headed for h3.

h6 is well cover so putting the hammer on h7 seems like the only attacking plan to me. But then what to do about 19 Qh5 B x f5? The bishop still hangs. That will fail too I think.

Yep what I missed was mate with the minor pieces on knight X g7. The queen was not needed either. After N to f5+ N to h6 mate. Pretty...

Jun-28-14  RookFile: Everybody has their own style, but I would not have played 9.... Bc5+ with black.

At first, you way, hey, it gains a tempo.
But, I would argue that it actually loses one instead.

1) Kh1 is a typical move for white in these setups, here he is "forced" to make a move he's going to make anyway.

2) Who is attacking? I believe the answer is: white. What does the bishop on c5 do for defensive purposes? The answer is: nothing. It would be better posted on e7.

I believe that black should have played either 9...d5 or 9....d6, followed by a later ... Be7. If white's king sits on g1, that might be useful for a later ...Qb6+ or something from black.

Jun-28-14  stst: go sacrifice and attack:
19. Qh5 BxB
20. NxP KxN
21. Bf6+ Kg8
22. Rf3 Re8
23. Qh6 and Qg7# next
(in between Black can move the Rooks at the back rank, but White simply shift Rook to e/f/g files, avoiding exchange) Main idea is having the Q locking the Black K, and using the f7 P to block off Black Q from defending... Could be off --- that's why "Difficult"
Jun-28-14  TheBish: Stein vs Portisch, 1962

White to play (19.?) "Very Difficult"

The position seems right for a destructive sacrifice.

19. Nxg7! Bxc4

Or 19...Kxg7 20. Bf6+ Kg8 21. Qh5 Rfd8 22. Qh6 Bf8 23. Qg5+ Bg7 24. Qxg7#.

20. Bf6! Be7

But not 20...Bxe2 21. Nf5+ Kg8 22. Nh6#, or 20...Nd7 21. Rxd7!.

21. Qf3 Kg8 22. Ne8! and wins, e.g. 22...Rfxe8 23. Qg4+ Kf8 24. Qg7#, or 22...Bxf6 23. Nxf6+ Kg7 24. Qg4+ Kh8 25. Qh5 with 26. Qxh7# to follow.

Sep-09-16  andrea volponi: 15De1!?a5?-Cxg7!Rxg7-Txf6
Oct-25-16  andrea volponi: 11e5!
Apr-25-17  andrea volponi: 11e5!! dxe5 -fxe5 Dxe5 -Cc4 Dh5 -Ae2 Dd5 -De1 0-0 -Txf6 gxf6 -Dh4 Df5 -Ae3 Axe3 -Ad3 Ag5 -Dh5 Dg6 -Axg6 .
Sep-28-18  N.O.F. NAJDORF: I think, Cheapo, that after 19 Nxg7 kg8,

White would have continued as in the game with 20 Bf6!

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