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Vladislav Ivanovich Tkachiev vs Maxime Vachier-Lagrave
French Championship (2006), Besancon FRA, rd 4, Aug-17
English Opening: Anglo-Indian Defense. King's Knight Variation (A15)  ·  1-0
ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Oct-11-06  Marco65: Completely missed that. I considered 22.Nc6 and then rejected because I only calculated 22...bxc6 23.Qxc7 Rxc7 so what?

Then I looked at the solution and still didn't understand what if 22.Nc6 Rxd1. It took me a lot to see that after 23.Rxd1 the knight can't be taken and Black loses the exchange (after 23...Nd7). Not my best day!

Oct-11-06  Castle In The Sky: I 1/2 way saw it. I saw the Nc6 but thought black could get out of it with Rxd1 instead of bxc6. However with Rxd1, followed with Rxd1, white still gets the rook on b8. Nice puzzle.
Oct-11-06  krdjis: got Nc6, but was foggy about the continuation...
Oct-11-06  tor2ga: Neat.

I thought about Nb6 to drive away the defense against White's passer. However this fails because Black can push e5-e4! at the right moment and block White's bishop. If Black had chosen some other move besides 21...e5 (admittedly his options were limited at that point), then 22.Nb6 would also win a minor.

Oct-11-06
Premium Chessgames Member
  YouRang: I missed it. I thought I found a Ne6 line that worked, but I miscalculated...I don't think it works at all.

I did figure it would be some sort of deflection of the queen (allowing Qxb8), and I even glanced at 33. Nc6!!, but I dismissed it too soon -- it just 'looked' like Black had enough options to deal with it, and I was too lazy to work them out. :-(

Oct-11-06
Premium Chessgames Member
  kevin86: I tried a slightly different tack: 22 ♘b6 followed by ♘c6.

The text has quite a twist:If black recaptures the rook with another piece than the queen,the lady is left hanging-but if Her Majesty captures,the other rook is left out to dry. The third option is to capture white's queen--but in this case,the thrice threatened rook can recapture to run to safety.

Oct-11-06  aldehyde: this puzzle was a piece of cake. i wonder why many of you missed it!
Oct-11-06  ChessMan94: What's wrong with Nb6?
Oct-11-06
Premium Chessgames Member
  YouRang: <ChessMan94: What's wrong with Nb6?> I'm struggling to see what is right with it. :-|

What do you do after 22...Rxd4?

Oct-11-06  technical draw: <ChessMan94 et al> Please indicate the move number when asking a question.
Oct-11-06  GoldenKnight: My solution was Nb6 with the threat of NxR or Na8 (after Black's ...RxN). If ...QxP then Nb3 looks overwhelming. White's c5 P and Black's e5 P (in certain lines) prevent Black's Q from continuing to protect the R. His d7 R blocks his B, etc. In quick analysis I cannot see how Black can maneuver his pieces or bring his N over quickly enough to stave of disaster. I saw this instantly so didn't look further, but the text solution is also quite elegant.
Oct-11-06  GoldenKnight: <YouRang> I posted before seeing your comment. After 24...Rxd4 then 25.Na8 as I mentioned. It looks like a bust for Black in all lines. I'll be interested in your comments on this.
Oct-11-06  cjhasbrouck: I'm a little confused about 8. ...d5??

How does this move not lose a pawn?

I'm sure there's some well-known queen move that I'm missing or something. Could anyone explain that?

Oct-11-06  cjhasbrouck: It looks like the knight at d4 can get pinned very badly, and it does look like black can win a piece, but I still can't see exactly how.

This is driving me crazy. !

Oct-11-06
Premium Chessgames Member
  playground player: I'm glad I'm not the only one who opted for Nb6. I usually find Wednesday puzzles easier than this. I blame my cats for waking me up at 4 a.m.
Oct-11-06  sharkbenjamin: THIS WAS INCREDIBLE! X-ray vision.
Oct-11-06  psmith: <GoldenKnight> 22. Nb6 Rxd4 23. Na8 Rxa8 24. Qxa8 Rxd1 25. Rxd1 Qxc5 .
Oct-11-06  ataturk: got it...
Oct-11-06
Premium Chessgames Member
  YouRang: <GoldenKnight> I think the line given by <psmith> shows why 22. Bb6 isn't a winner (and may be a loser).

<psmith>'s line ends like this (white to move, after 25...Qxc5):


click for larger view

Materially, Black has 2 knights and a pawn for a rook (although the black bishop on c8 is in trouble, e.g. ...Rd8+).

Black also has a dangerous-looking threat at f2. (If White ignores this threat with 26. Rd8+, we get: 26...Kg7 27. Qxc8 Qxf2+ 28. Kh1 Qe1+ 29. Bf1 Qxf1#).

So White must play more defensively, such as 26. h3. But then 26...Qxf2 27. Kh1 Ne3 (threat Qxg2#) 28. Qxc8+ Kg7 29. Rg1 Nh5, and it looks like Black is moving in for the kill.

If White must defend f2 with 26. Rf1, then 26...Kg7, and Black can save his bishop (and still have good attacking chances).

Oct-11-06  euripides: <cj> One possibility is 9. Nxd5 Nxd5 10. Bxd5 (cxd5? Qc3+) Bh3 when White has trouble castling and faces threats on the d file.
Oct-11-06  EXIDE: Got this one although I spent a lot of time looking at capturing the black Queen.
Oct-11-06  schnarre: Even I got this one.
Oct-11-06  GannonKnight: Didn't get it. Toughie for a Wednesday puzzle. I thought about 22. Nb6, but couldn't find the continuation.

22. c6 is interesting, but it's refuted easily.

Oct-11-06  The17thPawn: Could not touch this one at all. It's time like these I start thinking of the law of diminishing returns. Work on my game and see less?! That's some incentive for a woodpusher like me. Glad the rest of you found this it had my head in knots.
Apr-17-07  outplayer: Is 13...Ng4 dubious?
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