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Hans Mueller vs Ossip Bernstein
Zurich (1934), Zurich SUI, rd 8, Jul-21
Slav Defense: Quiet Variation. Schallopp Defense (D12)  ·  0-1

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Sep-07-09  2ndNature: <Once> You comments stand out (in a good way) from these self patting "I got this one..." posts. Or is this just the way my brain is wired... ;)
Sep-07-09  KOCMOHAYT: the whole combination begining with ... 24 Bxg3 is a good one, queen sac is just the last forcing move
Sep-07-09  alphee: Very nice
Sep-07-09  Chessox: White wins a rook:
1. Qxg2+ Kxg2 2. Nf4+ forking king and Queen.

Great to finally be a member of chessgames!

Sep-07-09  zb2cr: Quick and simple. Black captures with the Queen on g2, White retakes with the King (forced), ... Nf4+ forks and wins White's Queen, leaving Black up by the exchange and 2 Pawns.
Sep-07-09  randomsac: Free rook! Don't you just love knight forks...
Sep-07-09  TheaN: Monday 7 September

<26....?>

Target: 0:40;000
Taken: 0:11;693
Par

Material: White up, ♘ / 2♙

Candidates: <[Qxg2†]>

-ML-
First move to spot, first move to check, done:

<26....Qxg2† 27.Kxg2 Nf4† 28.Kg3 Nxd3 > and Black just up an exchange and two pawns from a piece for two pawns down. It IS the question whether Black will get his Knight out, even so Black would win after Nxb4. However, Rg6† with Nf4 seems pretty unstoppable, and Black should win easily.

Sep-07-09
Premium Chessgames Member
  Peligroso Patzer: Back at move 25, I wondered if White could have refuted the sacrifice (24. ... Bxg3) by taking the Knight on d5, but although this might have been a better practical try, it also appears to be an insufficient defense:

<25.Nxd5 Bxh2+ 26.Kh1 Bg3! > (but not 26...cxd5? 27.Rxh2±) <27.f4> (or 27.Rg2 Rh6+ 28.Kg1 Qh4 ) <27...Rh6+ 28.Kg1 Qh4 29.Ne7+> (also losing would be: 29.Qf3 Bh2+ 30.Kh1 (or 30.Kg2 Rg6+ ) 30...Bxf4+ ) <29...Kh8 30.Qf3 Bh2+ 31.Kg2 Qxe7 >.

Sep-07-09  Intrepid Spiff: What a forking knight!
Sep-07-09  A Karpov Fan: are Mondays always a queen sac?
Sep-07-09  PinnedPiece: Spotted 26...Qxg2+ within 10 seconds...well within my Monday 30-sec to play goal. However, 25....? would have been a different story, and 24...? fuggedaboutit.
Sep-07-09  YouRang: The old fork-back queen sac.
Sep-07-09
Premium Chessgames Member
  Tabanus: Even I saw this one, after about 1 second! :)
Sep-07-09  Summerfruit: Black has 2Ps for N.

Black wins a whole rook:

26...Qxg2+ 27.Kxg2 Nf4+

Sep-07-09  Patriot: Nice and easy Monday.

<TheaN: It IS the question whether Black will get his Knight out, even so Black would win after Nxb4. However, Rg6† with Nf4 seems pretty unstoppable, and Black should win easily.>

Good point! I also looked at whether the knight was trapped at the end of the combo, but it isn't.

Sep-07-09  Sacrificator: Sacrifice a Queen and win a Rook. What could be better?
Sep-07-09  muralman: Sleeping in made me think it was Sunday. I thought, what a gift!
Sep-07-09  TheaN: <Patriot: Good point! I also looked at whether the knight was trapped at the end of the combo, but it isn't.>

Actually, after your post I reviewed my proposition again and it might not be as easy for Black after 29.f4!?:


click for larger view

After 29....Rg6† now, White may just move to the h-file and the Knight can't escape. Probably easily winning then is 30....Re8, bringing in an extra piece and not allow White to dig up the Knight. With the prolonging option of Ne1, which doesn't seem a very good route at first sight, Black is winning.

Interesting is the sidevariation 30.Kf3?? White is down and out after 30....Re8 , as White cannot do anything against 31....Ne1†. If White refuses to capture, it follows 32.Kf2 Rg2‡ 0-1, which is a nice mate.

Sep-07-09
Premium Chessgames Member
  Once: <Chessox> Welcome! Hope you enjoy your time here on chessgames.com.
Sep-07-09  wals: [Event "Zurich"]
[Site "Zurich"]
[Date "1934.??.??"]
[Round "?"]
[White "Hans Mueller"]
[Black "Ossip Bernstein"]
[Result "0-1"]
[ECO "D12"]
[Annotator "Rybka 3 1-cpu (30m)"]
[PlyCount "54"]

D12: Slav Defence: 3 ♘f3 ♘f6 4 e3 ♗f5

1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. e3 Bf5
5. Nc3 e6 6. cxd5 exd5 7. Bd3 Bxd3 8. Qxd3 Nbd7 9. O-O Bb4 10. Nd2 O-O 11. a3 Ba5 12. b4 Bc7 13. f3 Re8 14. Bb2 Nf8 15. e4 Ne6 16. Ne2 (16. g3 !? deserves consideration) 16... dxe4 17. Nxe4 Nd5 (17... Nxe4 18. fxe4 Ng5 ) 18. g3 ♙revents intrusion on f4 (18. Rab1 Nef4 19. Nxf4 Nxf4 ) 18... f5 ♗lack threatens to win material: f5xe4 19. Nf2 (19. Nc5 Qe7 20. Nc3 Nxc5 21. dxc5 Qe3+ 22. Qxe3 Nxe3 (22... Rxe3 23. Nxd5 cxd5 24. Rad1 )) 19... Qg5 (19... Ng5 20. Bc1 ) 20. Bc1 (20. Rae1 Rad8 ) 20... Qh5 (20... Qf6 21. Rb1 ) 21. Ra2 (21. Kg2 Rad8 ) 21... Ng5 (21... Bb6 22. Kg2 ) 22. Nd1 (22. f4 Nf7 ) 22... Re6 (22... f4 \ 23. b5 \) 23. Bxg5 ( 23. Ndc3 \ Nxc3 24. Nxc3 \) 23... Qxg5 \ 24. Nec3?? <blunder> another bit of territory lost (24. f4 Qf6 25. Rd2 ) 24... Bxg3 takes home the point 25. Rg2 (25. hxg3 Qxg3+ Combination) 25... Bxh2+ the knock-out blow 26. Kxh2 Qxg2+ Double attack: d3/g2 27. Kxg2 Nf4+ (27...<-6.35> Nf4+ 28. Kh2 Nxd3 ) 0-1

The above may be of interest to those seeking help.

Sep-07-09  WhiteRook48: this was super easy
Sep-07-09  gofer: 26 ... Qxg2+ 27 Kxg2 Nf4+ 28 Kh2 Nxd3 winning the rook and the game...

Time to check....

Sep-07-09
Premium Chessgames Member
  gawain: Saw the capture and the fork instantly. It's pretty, though.

I did not check to see whether the knight would be trapped, however. Shame on me. Winning a rook is decisive; winning an exchange might not be.

Sep-08-09  LIFE Master AJ: Welcome to CG, <Chessox> ... its good to have you aboard.
Sep-11-09
Premium Chessgames Member
  kevin86: Good Monday puzzle-a queen loan AT shark rates.
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