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Sergei Rublevsky vs Kirill Alekseenko
Russian Team Championship (2018), Sochi RUS, rd 9, May-10
Sicilian Defense: Najdorf. Opocensky Variation Traditional Line (B92)  ·  0-1



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find similar games 2 more Rublevsky/K Alekseenko games
sac: 33...Nxf6 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
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Premium Chessgames Member
  ChessHigherCat: FishStick says I missed fxg5 in the first line:

(+2.00) 33...Qa7 34. fxg5 Qxb6 35. Qd3 d5 36. Kh1

Shucks, fellars

Jan-19-19  mqhelisi: Mine was 33....Qxf6 34.fxg5 Qf2+ 35. Kh1 Qxe3 (Qxh3 and Rf2 so strong)
Jan-19-19  s0030135: I wonder if today's puzzle could be considered a spoiler. I thought 33...Nxh3+ 34.Rxh3 Qa7 wins for Black, but then after that White has 35.Kg2! Qxb6 36.Rxh7+ Kxh7 38.Qh1+ Nh6 40. Qxh6+ mating.
Jan-19-19  WorstPlayerEver: 6th Monday puzzle in a row.
Jan-19-19  malt: Went for 33...N:f6
(33...Q:f6 34.Nd5 )

34.fg5 Ng4
(34...N:e4 35.Qe1 )

35.hg4 Qf2+ 36.Kh1 Q:e3

Jan-19-19  malt: 34.Qe1 ef4 (34...Ng:e4) 35.N:f4
<Walter Glattke> looks equal.
Jan-19-19  breakbad: Is it Monday already?
Jan-19-19  The Kings Domain: Fine game and interesting puzzling puzzle.
Jan-19-19  thegoodanarchist: Kirill eleison!
Premium Chessgames Member
  agb2002: Black is one pawn down.

White threatens fxg5 and Rxa5.

Black has Nxf6, Qxf6 and Qa7.

In the case of 33... Qxf6 34.Nd5, protecting the rook with tempo and followed by fxg5, doesn't look good for Black.

In the case of 33... Qa7 34.fxg5 Qxb6 35.Qd2 (35.Kf2 Nxf6) White seems to solve its problems.

Therefore, 33... Nxf6:

A) 34.fxg5 Ng4

A.1) 35.hxg4 Qf2+ 36.Kh1 Qxe3 looks winning. For example, 37.Nd5 Qxe4+ 38.Kg1 (38.Kh2 Rf2+ and mate in two) 38... Qxg4+ 39.Kh1 Rf2 wins.

A.2) 35.Rg3 Qf2+ 36.Kh1 Qh2#.

A.3) 35.Qf1 Qxf1+ 36.Rxf1 Rxf1+ 37.Kxf1 Nxe3+ followed by 38... Nxc2 - + [r+p vs N].

B) 34.Qd3 Ngxe4 35.Rxe4 Nxe4 36.Qxe4 Qa7 37.Qe3 Rb8 38.Nd5 Qxe3+ 39.Nxe3 exf4 40.Nc4 unclear but there's probably a better option for Black at move 34.

Jan-19-19  Patriot: <agb2002> Black also has 33...Nxh3+ 34.Rxh3 Qa7. I'm not saying it's great but it is something to consider because white cannot defend the knight on b6.

33...Nxf6 is far more logical than 33...Nxh3+ though because it considers the x-ray battery down the F-file.

Premium Chessgames Member
  Breunor: Oddly I got the main line here since Saturday puzzles are usually put of my skill set; but I'm not sure I got all of the possible side variations.
Jan-19-19  messachess: Pretty cool. Pretty easy to figure out.
Jan-19-19  cormier: Analysis by Houdini 4

37...Qf3+ 38.Kh2 Qf2+ 39.Kh1 Qh4+ 40.Kg1 Rf2 41.Nxa5 Qh2# - + (-#5) Depth: 99

Jan-19-19  cormier:

click for larger view

Analysis by Houdini 4 d 21 dpa

1. = / + (-0.64): 34.Rxa5 Nfxe4 35.Nd5 Nf6 36.c4 Ne6 37.Rf3 Nxd5 38.Qxd5 Qe7 39.b4 exf4 40.Kh2 Rde8 41.Rf1 Ng7 42.Ra2 Rf5 43.Qd3 g5 44.Nc3 Re5 45.Nd5 Qe6 46.b5 Nf5 47.Ra7 Re2+ 48.Kg1 Qe5 49.Qc3 Nd4 50.Rd1

2. -+ (-1.84): 34.Qd3 exf4

Jan-19-19  cormier:

click for larger view

Analysis by Houdini 4 <d 21 dpa done

1. - / + (-1.35): 32...Nxf6> 33.f4 Rae8 34.Rxa5 exf4 35.Nxf4 Re5 36.Ra4 Nfxe4 37.Nbd5 Nf6 38.Kh1 Rxd5 39.Nxd5 Nxd5 40.Rg3 Nf3 41.c4 Nb6 42.Ra6 Nc8 43.Ra8 Ne5 44.Qg1 Kg7 45.Qg2 Ne7 46.Rxf8 Kxf8 47.Qe4 Kg7 48.Kh2 Nf5 49.Rg1 Qd7

2. - / + (-0.88): 32...Rad8 33.f4 Nxf6 34.Rxa5

Jan-19-19  cormier:

click for larger view

Analysis by Houdini 4 <d 23 dpa done

1. = / + (-0.47): 32.Qf1> Nxf6 33.Ndc3 Nh5 34.Rd1 Ra6 35.Rdd3 Rc6 36.Qg2 Ne6 37.Rd2 Rfc8 38.Rf3 Qe7 39.Qg4 Qg5 40.Rd1 Qxg4+ 41.hxg4 Nhf4 42.Kf1 Kg7 43.Nxf4 Ng5 44.Ne6+ Nxe6 45.Nb5 Ng5 46.Re3 Rxc2

2. = / + (-0.69): 32.Qd3 Nxf6 33.Rf1 Nxd5 34.Qxd5 Nf3+ 35.Kh1 Qxd5 36.exd5 a4 37.bxa4 Rxa4 38.Nc3 Ra5 39.Rd3 Nd4

3. - / + (-0.71): 32.Nec3 Nxf6 33.Qe2 Ngxe4 34.Nxf6 Nxc3 35.Rxc3 Qxf6 36.Qe3 Rf7 37.Rc6 Raf8 38.Rd1 Qxf2+ 39.Qxf2 Rxf2

Jan-19-19  cormier:

click for larger view

Analysis by Houdini 4 d 23 dpa done

1. = / + (-0.59): 31.Rc3 Rad8 32.Qf3 Nd4 33.Qe3 Nxf6 34.Rxa5 Qd7 35.Kg2 Rf7 36.Nb6 Qb7 37.Nc4 Nc6 38.Rd3 Nxa5 39.Nxd6 Rxd6 40.Rxd6 Qe7 41.Ra6 Nb7 42.Qg5 Rf8 43.b4 Nd6 44.Rc6 Rb8 45.c3 Qe6 46.Qd2 Nfe8 47.Qg5 Rb5 48.c4 Rxb4 49.c5 Rc4 50.Qd8 Kg7 51.Rxd6 Nxd6

2. - / + (-0.71): 31.c3 Ng5 32.Qg4 h6 33.Qh4 Kh7

Jan-19-19  cormier:

click for larger view

Analysis by Houdini 4 <d 24 dpa done only

1. = (-0.21): 29.b4> Qf7 30.Rxa5 Rxa5 31.bxa5 fxg5 32.Ne2 Nf6 33.Qd3 Kg7 34.Qf3 Ra8 35.Qxf6+ Qxf6 36.Nxf6 Kxf6 37.Ra1 Ra6 38.Nc3 Nf4 39.Kh2 Ke6 40.Nb5 Kd7 41.Rd1 Rxa5 42.Rxd6+ Ke7 43.Rb6 Ra2 44.Rb7+ Kf6 45.Rb6+ Kg7 46.Rb7+ Kh6 47.Rc7 Ne6

2. = (-0.79): 29.gxf6 Rf8 30.Re3

Premium Chessgames Member
  agb2002: <Patriot: <agb2002> Black also has 33...Nxh3+ 34.Rxh3 Qa7. I'm not saying it's great but it is something to consider because white cannot defend the knight on b6.>

Trying to take advantage of pins along the a7-g1 diagonal is probably one of the first ideas that comes to mind. However, I was unable to find a convincing line around this motif and started to look at the f-file.

In my opinion, the difficult part of this puzzle is the rejection of the offer with 34.Qd3, which I'm afraid I considered only superficially, or 34.Rxa5, which I ignored because some mundane things needed attention.

Feb-08-20  Walter Glattke: Recycled, my comment above
Premium Chessgames Member
  agb2002: Level 3.5: 26...?
Duras vs Rubinstein, 1907

click for larger view

Feb-08-20  messachess: The key was maneuvering to get rid of white's h pawn.
Feb-08-20  Diana Fernanda: Hello Luisa, you arĂ© a crear friend, from chile with love
Feb-08-20  Diana Fernanda: Because you ask for Sonia?
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