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Joel Lautier vs Ivan Sokolov
Linares (1995), Linares ESP, rd 1, Mar-01
Catalan Opening: General (E00)  ·  1-0

ANALYSIS [x]

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sac: 38.Nf5 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Aug-08-13  jvasea1990: Houdini 3 Pro w32
7.38 (depth 22) 38.c6 Nxc6 39.Nf5 Qf8 40.Nxe7+ Qxe7 41.Qxe7 Nxe7 42.Rd7 Kf8 43.Rxb7 Ke8 44.a4 Nc6 45.b5 axb5 46.Rxb5 Kd8 47.a5 Kc7 48.a6 f5 49.Rb7+ Kc8 50.Rg7 Kb8 51.Rxg6 Ne5 52.Rg7


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5.96 (depth 22) 38.Nf5 gxf5 39.Qg5+ Kf8 40.Rh6 Qc6+ 41.Rxc6 Nxc6 42.Qxf5 Re6 43.Qxh5 Re4 44.Qh8+ Ke7 45.a3 Kd7 46.Qh7 Re7 47.Qf5+ Kc7 48.Qf6 Rd7 49.a4 Nd8 50.f4 Rd3 51.Qe5+ Kc8 52.Qf5+

Aug-08-13  zb2cr: Okay, 38. Nf5 threatens mate. Looks as though 38. ... gxf5 is forced. 39. Qg5, Kf8; 40 Rh6! threatening 41. Rh8#. Black can only play 40. ... Qc6+; 41. Rxc6, Nxc6; 42, Qxf5. White has Q+2P vs. R+N. This is a winning advantage, especially with Black's weakened Kingside Pawns, but White must play carefully.
Aug-08-13  bubuli55: Nice ending by Lautier.
Aug-08-13  patzer2: <agb2002> Thanks for the analysis of 38. Nf5. I saw the final game position, but did not visualize all of the efficient winning lines you provided. I assume in your <B) 38... Qf8 39.Rxd8 gxf8> line that you intended to write 39...gxf5 (not 39...gxf8).

<jvasea1990> Thanks for the deep computer analysis.

Houdini's 38. c6, though difficult for human players to visualize, is a useful obstruction which avoids the slight complications of allowing Black a Rook and Knight versus Queen ending following 40...Qc6+! in the 38. Nf5 game line.

For me, the resulting Rook versus Knight endgame in the 38. c6 line is much easier to play. However, being able to see this at White's 38th move is much more difficult.

Aug-08-13  patzer2: Perhaps Black's decisive mistake was 22...Rc8?, allowing White to play 23. Rh4! and win a pawn with a Knight Fork combination.
Aug-08-13
Premium Chessgames Member
  paulalbert: Agree with some others that this seemed a little easy for Thursday. I spent some time looking for defense to 38 Nf5 since it seemed too obvious, but even Qc6ch does no more than prevent instant demise for Black.
Aug-08-13  gars: My first Thursday puzzle in ages!This is happiness!
Aug-08-13  bubuli55: Nf5 is medium alright. Qc6+ is within the calculations. But c6 is sweet. That's problem solving :)
Aug-08-13
Premium Chessgames Member
  kevin86: Black's pieces have protected his king so well...that he can't get out!
Aug-08-13  BOSTER: <Phony Benoni> <Pretty easy once you realize the versality of white's queen on g5. How do you find it in a game? Look at forcing moves>.

Everybody knows that to look at forcing moves is a good habit. Everybody knows that the white knight dreams of reaching f5. But I like what noticed <notyetagm>. <I really like the <lateral pin> along 6th rank after 38...gxf5-opening the 6th rank for white's heavy pieces>.

This was an idea how to build the pos. with the possibility to create a combo. The building the communication between the rook and the queen-this was an idea Rb6-Rf6-Rd6. The building

Aug-08-13  Marmot PFL: White is a pawn ahead with a dominating position, and can win about as he pleases. This is a puzzle so there must be a forcing move.

38 Nf5 threatens mate and Nxe7+, so it must be taken opening the position for the queen and rook. Black's pieces are so passively placed that no defense is possible, let alone counter threats.

Aug-08-13  Alex56171: 38.Nf5 threating mate on g7...
If 38...Qf8 then 39.Nxe7+ wins the rook.
If 38...gxf5 39.Qg5+ Kf8 40.Rh6
and black must surrender the queen: 40...Qc6+ Rxc6
Else 40... f6 41.Qxf6+ Nf7 42.Rh8#
Fritz 11 SE shows an interesting line: 38...Ne6 39.Nxe7+ Kh7 40.Nxg6 Qg8 41.Nf8+ Qxf8 42.Rxe6
Aug-08-13
Premium Chessgames Member
  perfidious: <radtop: It's much easier for an 1800 player to see the solution than it is for him to get to where the problem starts.>

Not only for an 1800 player.

The pattern seems unusually simple for a Thursday-as you say, anticipating the position is more difficult than solving it once we have got there.

Aug-08-13  Shams: "I can see Lautier's combination as well as he can-- I just can't get Lautier's position."
Aug-08-13  Patriot: 38.Nf5 is killer.

38...gxf5 39.Qg5+ Kf8 40.Rh6 f6 41.Qxf6+ and mate next.

38...gxf5 39.Qg5+ Kh8 40.Rh6#

There is a meaningless check (for example, 40...Qc6+ in the first line) which is completely lost.

Aug-08-13  BOSTER: <Shams>
<"I can see Lautier's combination as well as he can--I just can't get Lautier's position">.

Shame.

Aug-08-13  Mendrys: <Shams: "I can see Lautier's combination as well as he can--I just can't get Lautier's position"> I wouldn't be so sure; at least against players who are of comparable strength to yourself that is. The difficulty for me is that I can often plan a combination but fall into a common pitfall when you play for combinations where I open up a glaring weakness somewhere else in my own position that my opponent can take advantage of before I can execute the combination.
Aug-08-13  Shams: Guys, I put quotes around it. I was obviously referencing the famous quote that some GM (Averbakh or Reti?) made about Alekhine.

See <perfidious>' post right before mine for context. I'm well aware I'm not a GM at tactics.

Aug-08-13
Premium Chessgames Member
  michael104: I believe it was Spielmann who said that.
Aug-08-13  DoctorD: <Shams> I believe the quote you are paraphrasing should be attributed to Spielmann.
Aug-08-13  waustad: Maybe http://chesstempo.com/chess-tactics... has helped. Usually by Thursday I have trouble with them, but not today.
Aug-08-13  Mendrys: <Shams> I was trying to say "Don't sell yourself short". I should have realized that you were quoting someone else instead of talking about yourself. The point I was trying to make was that, against people of my own strength, I can sometime play a nice game and get a nice combination at the end and feel like Tal, for a game at least.
Aug-08-13  Shams: <Mendrys> That I can relate to. Not Tal so much in my case, maybe more of a positional player.
Aug-09-13
Premium Chessgames Member
  Once: <Shams> It's okay. I spotted the quotation marks!
Aug-09-13  BOSTER: <Shams> I didn't notice the quotation marks. This is my fault.
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