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Denis Khismatullin vs Ian Nepomniachtchi
Russian Championship Superfinal (2010), Moscow RUS, rd 1, Dec-11
Neo-Grünfeld Defense: Delayed Exchange Variation (D74)  ·  0-1

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Dec-14-10
Premium Chessgames Member
  HeMateMe: fiendishly clever.
Dec-14-10  Dr. Funkenstein: If 27. Qxa4 then 27. ...Qe3 unless I'm missing something more immediate. g3 definitely falls while h3 is under threat and the knight will reach f4.
Dec-14-10  Nezhmetdinov: Isn't Qf2 just a bit harsher for white in that line?
Dec-14-10  ganstaman: I see 27. Qxa4 Qf2 28. Rd3 and then I have trouble seeing how black continues. On 27...Qe3 I can't find anything for white.
Dec-17-10  goodevans: After 27 Qxa4 Qe3 not only is the g3 pawn doomed but the threat of ... Bb3 reduces white's defensive options.
Dec-23-10  primalfunk: Amazing how the pin on the e-file frustrates white three times in nearly the same way.
Nov-22-19  EIDorado: After Qe3, 28.Rf1 looks best for white. Still losing nonetheless.
Nov-22-19  Walter Glattke: Black also wins by 26.-Rxd1 27.Rxd1 Nxg3 28.Kxg3 Qe3+ 29.Bb3 or 27.Qxd1 b5 28.Nc3 Qe3 29.Qf3 Qd2 30.Rb1 Bb3
Nov-22-19  saturn2: I looked at 26...Rxa4 

27. Qxa4 Qe3 threatening g3 and Bb3

Nov-22-19  EIDorado: @Walter Glattke: After: 26.-Rxd1 27.Rxd1 Nxg3 28.Kxg3 Qe3+ comes 29.Bf3 Bb3 30.Qc3 Qxc3 31.Nxc3 Bxd1 32.Nxd1. Black is not winning.
Nov-22-19  malt: First went for 26...R:d1 27.R:d1 Qe3 but 23.Rd3 spoilt it.

Found 26...R:a4 27.Q:a4 Qe3 Δ 28.Q:g3+

Nov-22-19  Walter Glattke: Proof ElDorade with 30.-g5 31.f5 Bb3 32.Qc3 Qf4+ 33.Kg2 Bxd1, but of Course the match move 26.-Rxa4 is the better one, but Maybe 26.-Rxd1 27.Rxd1 Nxg3 or 27.-Qxd1 is black advantage, is only the second best, I saw
Nov-22-19
Premium Chessgames Member
  chrisowen: Chummywatch no?
Nov-22-19  agb2002: The first idea that comes to mind is 26... Rc4 27.Qd3 (27.Qb3 Rxe4 wins a pawn) 27... Rxa4 28.b3 Bxb3 29.Qxb3 b5 winning a pawn.

Another option is 26... Rxa4 27.Qxa4 Qe3:

A) 28.Qc2 Qxg3+ followed by Nxf4 and Black seems to have more than enough compensation for the exchange (two pawns and better position).

B) 28.g4 Qg3+ 29.Kh1 (29.Kg1 Nxf4 30.Qc2 Nxh3+ wins three pawns for the exchange) 29... Nxf4 30.Qc2 Nxh3 looks similar to the subline.

Nov-22-19  RandomVisitor: After 26...Rxa4


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Stockfish_19111923_x64_modern:

<46/77 2:04:15 -6.15 27.Qxa4 Qe3> 28.Rf1 Qxg3+ 29.Kg1 Bxh3 30.Qc2 Nxf4 31.Rxf4 Bxg2 32.Qf2 Qg5 33.Qh4 Qxh4 34.Rxh4 Bxe4 35.Rd1 Re7 36.a4 Kg7 37.Rd8 f5 38.Kf2 h5 39.Rh3 f4 40.Rh4 f3 41.Rd2 Kh6 42.Rf4 Bd5 43.Rf8 g5 44.Rxf3 Bxf3 45.Rd6+ Kh7 46.Kxf3 Rf7+ 47.Kg2 Rf4 48.Rd7+ Kg6 49.Rxb7 Rxa4 50.Ra7 Rg4+ 51.Kh3 Rh4+ 52.Kg2 a4 53.Rb7 Rc4 54.Rb8 h4 55.Kh3 Re4 56.Rg8+ Kf6 57.Rh8 Rb4 58.Rc8 Kg6

46/66 2:04:15 -6.62 27.Rd2 Rd4 28.Rad1 Rxd2 29.Qxd2 Bb3 30.Rf1 Qb6 31.Rf3 Bc4 32.Qf2 Qxf2 33.Rxf2 Nf6 34.e5 Nd5 35.Rc2 Bb3 36.Rd2 Kg7 37.Kg1 a4 38.Bf1 h5 39.Be2 b5 40.Kf2 Rh8 41.Bf3 Rf8 42.h4 Re8 43.Bg2 f6 44.Bh3 Re7 45.Re2 fxe5 46.Rxe5 Rxe5 47.fxe5 Nb6 48.Bg2 Bd5 49.Bf1 Kf7 50.Ke3 Nc4+ 51.Kd4 Ke6 52.Bh3+ Ke7 53.Bf1 Nxb2

45/66 2:04:15 -6.73 27.f5 Rc4 28.Qd2 Bc8 29.b3 Rc5 30.Qd4 b6 31.Ra2 Qb8 32.Qd6 Qxd6 33.Rxd6 Rc3 34.Rf2 Nxg3 35.fxg6 hxg6 36.Rf3 Nxe4 37.Rxc3 Nxd6 38.Rxc6 Bb7 39.Rxd6 Re2 40.Kg3 Rxg2+ 41.Kf4 Rf2+ 42.Ke5 b5 43.Rb6 Bg2 44.Kd4 Rf5 45.h4 Kg7 46.Rb8 Bc6 47.Rb6 Bd7 48.Ra6 Be6 49.Rxa5 Bxb3 50.Kd3 Rh5 51.Ke3 Ba4 52.Kf2 Rxh4

Nov-22-19  RandomVisitor: Ater 23.f5 white would have had an equal game


click for larger view

Stockfish_19111923_x64_modern:

<40/59 05:56 0.00 23...gxf5 24.Qd2> Be5 25.Qg5+ Kh8 26.Bf4 Bd4 27.Nc3 Rg8 28.Qh4 Nxe4 29.Nxe4 fxe4 30.Be3 Bxe3

40/56 05:56 0.00 23...Bc8 24.Bh6 b5 25.Rxd4 Qxd4 26.Nc5 gxf5 27.Rd1 Qe5 28.Bf4 Qe7 29.Bg5 Qe5 31.Qf6+ Rg7 32.Rd8+ Rxd8 33.Qxd8+ Rg8 34.Qf6+ Rg7 35.Qd8+

Nov-22-19  saturn2: <agb2002: The first idea that comes to mind is 26... Rc4 27.Qd3 (27.Qb3...> This was my first idea but I dismissed it. I did not see much after

26...Rc4 27. Nc3 Qe3 28. Rd3

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