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Wolfgang Uhlmann vs Lubomir Kavalek
Halle Zonal (1963), Halle GDR, rd 12, Jul-15
King's Indian Defense: Four Pawns Attack. Normal Attack (E77)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Sep-24-13  patzer2: <Once> By move 18, White's already in trouble and finding a defensive plan is difficult.

White's "adventure," starting with 18. Qd3, seems a bit strange, but I'm unconvinced it's clearly worse than the alternatives in a weak position.

So I prefer to look for improvement earlier.

After missing 10. Bxb5! with a clear advantage, I think White's next best chance to hold is 12. Bxb5 Nxe5 13. 0-0 =.

Also, 14. d4, 14. Nxe5, or 14. Ng5 (all = to ) improve over 14. a4?!.

Sep-24-13  zb2cr: The main line is 30. ... Qxe3; 31. Rxe3, Nd2+; 32. Ke2, Nxb1 and Black has a full extra piece.

White has nothing else good, since he's also being threatened with 31. ... Ng3#. 31. Qxb3 is irrelevant to that threat.
31. g3 defends that, but at ruinous cost: 31. ... Nxg3+; 32. Kg2, Nxe2.

31. Qxe4 is a creative try, but 31. ... Qc1+ and Black will promote the b3 Pawn.

Sep-24-13  Abdel Irada: <31. Qxe4 is a creative try, but 31. ... Qc1+ and Black will promote the b3 Pawn.>

Simpler is 31. ...Qxe4 32. Rxe4, b2, when the pawn cannot be stopped and there is no counterplay.

Sep-24-13
Premium Chessgames Member
  FSR: 30...Qxe3 wins after 31.Rxe3 Nd2+ 32.Ke2 Nxb1 or 31.Qxe4 Qxe4 32.Rxe4 b2.
Sep-24-13
Premium Chessgames Member
  gawain: This wasn't "easy" until I lowered my sights and stopped looking for a quick mate. Quickly found the game line, then.
Sep-24-13  JG27Pyth: A very difficult Tuesday if one insists (and I do) that for full credit you needed to see the 31.Qxe4 line including that the Black bishop defends not only e1, but b4. Details like b4 sink many a combination!

(Has this been pointed out a hundred times already? I haven't done my pre-posting homework)

Sep-24-13  LIFE Master AJ: Sorry, I set this one up on a chess set (to look at) and messed it up! (The Black ♗ was already on c3.)
Sep-24-13  JG27Pyth: Gosh, and in the Q fork line I completely missed that the N defends c3 or that line would be busted. Details details! :(
Sep-24-13  LIFE Master AJ: Despite my commenting inaccuracies, it remains a very good game by Kavalek ...
Sep-24-13
Premium Chessgames Member
  kevin86: The Monday queen sac gains black a piece-typical...except this is Tuesday.
Sep-24-13  JG27Pyth: @Once -- I always enjoy your commentary once! Thanks for such high quality posts over such a long period. But (you knew there was a but) today I disagree with your analysis of the "story" of the game.

This part I completely agree with:

<White finds himself with pieces that have too much to do. They have to defend attacked pieces, prevent the knight fork on d2, hold back the passed pawn on b3 and defend against black's mate threats (eg Qf2).>

But laying all that at the feet of White losing tempi in the early stages with too many N moves and allowing Black to grab real estate -- I honestly think that is simplistic and I think it misses the real story which is not White's errors but Black's magnificent piece play. I'm not qualified to actually know that it is accurate, but it sure looks accurate to me. And very non-obvious.

For the second half of the game White is up a pawn and has two passed pawns to Black's one. White's rook is involved where black's is passive. White has the bishop pair and the kind of game in which, superficially, that would appear to be ideal. Black has what in compensation? A better passed pawn and active minor pieces. IOWs Black has what GM Suba/Watson would call a dynamic advantage -- and jeezis Kavalek makes it count! He had opportunity after opportunity to throw away his initiative and leave this a rather equal game. But he never settles for the expected or the easy "good" move, he doesn't win back the pawn when he has the chance, he doesn't activate his rook -- as every patzer in the world would because you are "supposed to" -- He finds move after move which is right on point and right on the razor's edge -- he's in constant danger of losing the b pawn and with it all his advantage and then some. He takes his biggest threat, his passed pawn and recaptures to the b-file!?! What is that? Is that a double exclam or what? Given the end of this game it strikes me as preposterously deep. Give Black's game a second look. I think's it's super chess.

Sep-24-13  LIFE Master AJ: <<I think's it's super chess.>>

For what's its worth, I agree ... although I think that Once's story is meant to be enjoyed, not analyzed ...

Sep-24-13  Thanh Phan: <LIFE Master AJ: <<I think's it's super chess.>> For what's its worth, I agree ... although I think that Once's story is meant to be enjoyed, not analyzed ...> So his explanation of the board and position has no meaning to you? interesting
Sep-24-13  patzer2: <Once> Correction: 14. d6 = to improves (not 14. d4) over 14. a4?!
Sep-24-13  patzer2: For a bit more difficulty, a good starting point for this puzzle is 27...Bxb2! (combining the deflection and Knight Fork tactics).

If 28. Qxb2, then 28...Qxe1+ .

If 28. Qd1, then 28...Be4 .

Sep-24-13
Premium Chessgames Member
  ajk68: <Chessgames>, I have a really hard time with Qxe3 being called a sac. Would it be possible to classify something like this as a "combination" (maybe "com" for short)?
Sep-24-13
Premium Chessgames Member
  Once: <JG27Pyth> I don't disagree for one second that black played very well here. That's the whole point that I wanted to draw attention to. The final combination didn't happen by chance. Black had secured such an advantage in space and threats that white's position was hanging by a thread.

But ... I would contend that great play by one player does not by itself guarantee victory. If it is met by equally great play by the opponent, all we get is a stirring and well-fought draw. Black played well, but my contention is that white allowed him to.

With the possible exception of 10. e5, white does not make a threatening move throughout the entire game. This means that black has the time for his own aggressive moves.

There is no question that white develops more slowly than black. He invests four knight moves to secure the bishop pair. His queen takes five moves to get from d1 to b1. His QB doesn't move off the back rank until move 26.

Yes, black plays very well to take advantage of this tardiness. But it is easier to play well when your opponent isn't putting you under pressure.

Or to put it another way ... if white had played as forcefully as black, the game would probably have ended in a draw.

It is all too easy to rewrite history from the point of view of the victor. But that seems too lazy to me. In chess at least, a crush like this is nearly always the coincidence of strong play by one side as well as weaker play by the other.

Sep-24-13  BOSTER: After 26...Qg3 (see the diagram) white could play 27.Bxd4 Qxe1+ 28.Kh2 and white pos. is very good. Black could only draw.


click for larger view

A bishop on the a1-h8 diagonal with the opponent's king at h8(or g8) is a motif of various tactics.

Sep-24-13
Premium Chessgames Member
  Penguincw: I was too busy trying to find out how to remove the defenders of d2 and f2, when I realized there was a forcefully way.
Sep-24-13  patzer2: <BOSTER: After 26...Qg3 (see the diagram) white could play 27.Bxd4 Qxe1+ 28.Kh2 and white pos. is very good. Black could only draw.> Not so fast! After 26...Qg3 27. Bxd4 Qxe1+ 28. Kh2 Qg3+ 29. Kg1 h5! (diagram below) Black is back on a winning track.


click for larger view

Here, the Knight keeps the White Queen off f6, and White can win the pawn on b2 and promote a pawn at his leisure. The technique is not too difficult.

Play might continue 30. Bd7 Qd3 31. Qb6 h4! 32. Kh2 Qg3+ 33. Kg1 Qe1+ 34. Kh2 Qd2 35. Be5 Qxd5 (-3.54 @ 19 depth per Fritz 12).

Sep-24-13
Premium Chessgames Member
  Patriot: "Easy" - I was distracted by other candidates to think this was easy. And even when I stumbled onto the right one, I had to think further. This makes me wonder if I found the game move.

30...Qxe3

31.Rxe3 Nd2+

31.Qxe4 Qxe4 32.Rxe4 b2

There's no way I could see this in a speed game, and it would be pretty tough to see this in G/30.

Sep-24-13  BOSTER: <patzer2> <Not so fast>. Thanks. I guess Fritz 12 was right, even white could play 30.Be6 playing against human.
Sep-24-13  Nullifidian: 30... ♕xe3 wins a piece. If white plays 31. ♖xe3, black responds with 31... ♘d2+ and ♘xb1 on the next move.
Sep-24-13
Premium Chessgames Member
  LoveThatJoker: <30...Qxe3!> 0-1

A) 31. Rxe3 Nd2+ 32. Ke2 Nxb1 and Black is up a piece with potentially more for him due to his passed b-pawn.

B) 31. Qxe4 Qxe4 32. Rxe4 b2 wins

C) 31. Qxb3 Ng3#

LTJ

Sep-25-13  LIFE Master AJ: Great chess by Black, highly energetic play ...
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