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Vsevolod Rauzer vs Nikolay Grigoriev
USSR Championship (1929), Odessa URS
French Defense: Advance Variation. Nimzowitsch System (C02)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
May-19-23  jrredfield: My first impulse was 20 Nxh6+ gxh6 21 Qxh4 Rh7 but then I started leaning toward 21 Rg3+ Rg7 22 Qxh6 Rff7 23 Qh7+ Kf8 24 Qh8+ Ke7 25 Rxg7 or maybe 24 Qh8+ Rg8 25 Rxg8+. White has a few choices here as to how to proceed, but Black's King is too exposed to survive by now.
May-19-23  Brenin: 20 Nxh6+ gxh6 21 Rg3+ Rg7 22 Qh6 is not hard to find. Black has plenty of choices now (not 22 ... Rxg3 24 Qh7 mate), with 22 ... Rf7 looking best, but still losing as in the game. At the end, the threat of Qh4+ is deadly.
May-19-23
Premium Chessgames Member
  perfidious: Reached the same conclusion as <Brenin>; the only difficulty lies in the analysis after 22....Rf7.
May-19-23
Premium Chessgames Member
  PawnSac: perf.. brenin..

same here.

May-19-23  vajeer: Wasn't quite difficult. I chose 21. Qxh6 which transposes to text.
May-19-23
Premium Chessgames Member
  Korora: Saw the ♘xh6+ gxh6 but got the follow-up wrong.
May-19-23  Allderdice83: I had up through 25 ... Qxf4. Then I had 26. Rxf7+? Qxf7 27. Rf1 forcing a queen trade, i.e., 27 ... Qe8 28. Qxe8+ Bxe8. That should be a won endgame for White, but not as strong as 26. Rf1.
May-19-23  mel gibson: The first few plies were easy.

Stockfish 15 says:

20. Nxh6+

(20. Nxh6+ (Ng4xh6+ g7xh6 Rf3-g3+ Re7-g7 Qh4xh6 Rf8-f7 Qh6-h7+ Kg8-f8 Qh7-h8+ Kf8-e7 Rg3xg7 Nc6-d8 f4-f5 Qc7-f4 Re1-f1 Qf4-e3+ Kg1-h1 e6xf5 Qh8-h4+ Ke7-f8 Rg7-g3 Nd8-e6 Rg3xe3 d4xe3 Qh4-h6+ Ne6-g7 Qh6xe3 Kf8-g8 Qe3-g5 Kg8-f8 Rf1-f3 Ng7-e8 h2-h4 Rf7-g7 Qg5-f4 Rg7-f7 h4-h5 Kf8-g8 h5-h6 Ne8-f6 Kh1-g1 Kg8-h7 Bd3xf5+ Bd7xf5 Qf4xf5+ Kh7-h8 Qf5xf6+ Rf7xf6 Rf3xf6 b7-b5 Rf6-f8+ Kh8-h7) +11.48/39 192)

score for White +11.48 depth 39.

May-19-23  stacase: 23. Rh3 was my departure from what was played.
May-19-23
Premium Chessgames Member
  al wazir: After 27...Ne5 28. Rgxf7+ Nxf7 29. Qf6+ Kd6 30. Qxf7, white is a ♖ up.
May-19-23  agb2002: White is one pawn down.

White can expose the black king with 20.Nxh6+ gxh6 (20... Kh8 21.Nf7+ [better than 21.Nf5+] 21... Kg8 22.Bh7+ Kxf7 23.Qh5+ and mate next) 21.Qxh6:

A) 21... Rg7 22.Rg3

A.1) 22... Rxg3 23.Qh7#.

A.2) 22... Rff7 23.Qh7+ Kf8 24.Qh8+ wins decisive material.

A.3) 22... Bc8 23.Qh7+ Kf7 24.Rxg7+ wins decisive material.

B) 21... Kf7 22.Qg6#.

C) 21... Rff7 22.Rg3+ Rg7 23.Qh7+ Kf8 24.Qh8+ and mate in two.

D) 21... Bc8 22.Rg3+ Rg7 23.Qh7+ wins decisive material.

May-19-23  Refused: That one is straight forward.

20.Nxh6+

a) 20...Kh8 is utterly unappealing 21.Ng4+ Kg8 22.Qh7+ Kf7 23.Bg6# is not an option.

b)thus 20...gxh6 is forced 21.Rg3+ Rg7 (21...Kf7 22.Qh5+ is curtains) 22.Qxh6 Rf7 23.Qh7+ Kf8 24.Qh8+ Ke7 25.Rxg7 +-

That one was rather straight forward.

May-19-23  nalinw: Maybe easy for some for a Friday - no points for me. My blind spot was not seeing that Qh7+ was possible because the Rook on g7 is pinned!
May-19-23  Brenin: 15 ... Rae8, allowing White to open up Black's K-side defences with 16 Bxf6, was a mistake. Instead, 15 ... Ne4 16 Bxe4 dxe4 17 Rxe4 Nxe5 18 Rxe5 Qxe5 19 fxe5 Rxf2 20 Rxf2 Rc8 leads to a dead drawn endgame. If he wanted to keep some winning chances alive, he could have tried 15 ... Nxe5 16 Rxe5 Qb6, e.g. 17 Bxf6 Rxf6 18 Qh4 Rh6.

Later, 18 ... h6 just invited the N sac 19 Nxh6, whereas a meek 18 ... g6 19 Nf6+ Rxf6 20 Qxf6 Qd8 would have forced Qs off, and given him a P for the exchange, with some hope of survival.

May-19-23
Premium Chessgames Member
  chrisowen: I mouth it is v quirk it is web fat do it is help Nxh6 acrid mid fab alba auld cc it is Nxh6 ebb :)
May-19-23  King.Arthur.Brazil: I proposed the line (seems easy): 20. Nxh6+ gxh6 21. Rg3+ Rg7 22. Qxh6 Rf7 23. Qh7+ Kf8 24. Qh8+ Ke7 25. Rxg7 Rxg7 26. Qxg7+ Ke8 27. Bg6+ Kd8 28. Qf8+ Be8 29. Qxe8# Or 20... Kh8? 21. Nf7+ Kg8 22. Bg6 Rfxf7 23. Qh7+ Kf8 24. Qh8#.
May-19-23
Premium Chessgames Member
  FSR: What <Refused> said.
May-19-23
Premium Chessgames Member
  Diademas: Did 21.Qxh6.
Don’t think it matters.
May-19-23  johnnydeep: Pretty easy for a Friday. 21.Qxh6 seems to work just as well as the game move.

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