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Arturo Pomar Salamanca vs Martin Johansson Sr
"Arturo Fuente" (game of the day Mar-04-2011)
Havana Olympiad qual-1 (1966), Havana CUB, rd 3, Oct-28
Nimzo-Indian Defense: Normal Variation. Bernstein Defense Except Gligoric System (E53)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Given 12 times; par: 30 [what's this?]

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sac: 18.Bxe6 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
Mar-11-05  Ingolf: 19.Qf3! is the culmination of this beautiful combination, exploiting blacks back rank weakness.
Mar-04-11  acme: What a game! I've never seen a back rank weakness exploited quite like this.
Mar-04-11  mike1: Yes, 19.Qf3!! Did not see it comming.
But is Pomar's attack sound?
What happens after 18...Rxc1?
19.Bxf7 Qxf7 is not the answer
19. Rxc1 fxe6 and I dont see anything
for White. Any ideas?
Mar-04-11  rilkefan: Exquisite combo.

Is 18...Bxf1 best?

Mar-04-11
Premium Chessgames Member
  al wazir: What was wrong with 19...Nc6 ?
Mar-04-11
Premium Chessgames Member
  Phony Benoni: <mike1: Yes, 19.Qf3!! Did not see it coming. But is Pomar's attack sound? What happens after 18...Rxc1? 19.Bxf7 Qxf7 is not the answer 19. Rxc1 fxe6 and I dont see anything for White. Any ideas?>

Look again at the <18...Rxc1 19.Bxf7 Qxf7> line:


click for larger view

The key move is to not capture the queen, but play <20.Rxc1!> Now the queen and bishop are still threatened, and 20...Qd5 allows back rank mate again. That leaves <20...Rb7 21.Qc4+!>


click for larger view

Now any interposition on d5 allows 22.Qc8+, and 21...Kf8 walks into 22.Bb4+ Ke8 23.Qe6+ Kd8 24.Nf7+ Qxf7 25.Rc8#. The funny line is 21...Kh8 22.Qc8+ Ng8 23.Qxb7!, and Black can't play 23...Bxb7 because of 24.Nf7#!

What this means is after 20.Rxc1 in the first diagram, Black must concentrate on stopping mate (20...Qd7), abandoning the bishop on g2. White then comes out a pawn ahead.

I think we can all be glad it didn't come out that way.

Mar-04-11  Jamboree: On move 18. why play 18. ... Bxf1? ? Why not just recapture the white bishop with the obvious 18. ...fxe6. Where is white's mating combination after that? It seems the material will return back to even, and black will have a chance to recover and continue the fight. If 19. Rxc8+ Qxc8, white can either try 20. Kxg7 or 20. Rc1, but either way it seems black can now have a moment to catch his breath and defuse the mating attack.

Actually, I think black first started to go wrong with 11. ... b6? Why be so timid? For the moment there is a pin on the file, so get bold with 11 ... b5!, and white must retreat the bishop: 12. Bd3 Qxc2 13. Bxc2, and now black has achieved equality after something like a5 or a developing move. Plus, there is now no looming mating threat.

Mar-04-11  goodevans: <acme: What a game! I've never seen a back rank weakness exploited quite like this.>

Agreed. Time and again black must have been rueing not having dealt with this weakness before launching his offensive.

Mar-04-11
Premium Chessgames Member
  kevin86: The back row sets up the problem,the diagonal is the killer.
Mar-04-11  Lil Swine: the idea of this is similar to that of the immortal queen sacrifice, in which black's back rank weakness is exploited by a number of queen offerings to eliminate a defender.
Mar-04-11  WhiteRook48: that is a nice way to exploit the back rank
Jun-04-19  M3ANDROS: Am I missing something here? I only see the position up to move 13. I can't see the rest of the game...
Jun-04-19
Premium Chessgames Member
  Tabanus: Me neither.
Sep-01-19  machak: you can download PGN, probably viewer error:

[Event "Havana ol (Men) qual-A"]
[Site "Havana CUB"]
[Date "1966.10.28"]
[Round "3"]
[White "Arturo Pomar Salamanca"]
[Black "Martin Johansson Sr"]
[Result "1-0"]
[ECO "E53"]
[PlyCount "53"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. a3 Bxc3+ 8. bxc3 Qc7 9. Qc2 dxc4 10. Bxc4 cxd4 11. cxd4 b6 12. Qd3 Bb7 13. Bd2 Rc8 14. Rc1 Be4 15. Qe2 Qb7 16. O-O a6 17. Ng5 Bxg2 18. Bxe6 Bxf1 19. Qf3 Bg2 20. Qxb7 Bxb7 21. Bxc8 Bd5 22. e4 Nxe4 23. Nxe4 Bxe4 24. Re1 f5 25. Be6+ Kh8 26. Bxf5 Bc6 27. d5 1-0

Sep-01-19
Premium Chessgames Member
  Stonehenge: 14.Rac1 is an error in the PGN.
Jan-06-21  SpiritedReposte: <19. Qf3!> is a sneaky one. ...Qxf3? Rxc8+ mating.
Jan-06-21
Premium Chessgames Member
  perfidious: <PB....I think we can all be glad it didn't come out that way.>

With Black avoiding that particular Scylla, only to plunge headlong into the Charybdis of the game continuation, it evokes memories of Alekhine and his dismay expressed in annotations when an opponent avoided a hidden reef and 'forced' him to put his victim to the sword in prosaic fashion.

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