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Wolfgang Uhlmann vs Bent Larsen
Larsen - Uhlmann Candidates Quarterfinal (1971), Las Palmas ESP, rd 6, May-23
Semi-Slav Defense: Meran. Wade Variation Larsen Variation (D47)  ·  0-1
ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Aug-11-05  karik: I thought everyone remembers this game and this position...
Aug-11-05  HastyMover: I didn't get it. I kept trying 36...Qxb1 37. Bxb1 Ba6+ and couldn't make it work. I should have learned from yesterday that the order of the combination matters. If I had moved 36...Ba6 first it would have worked out.

<zb2cr> If 36. ... Bg2+; why would white respond 37. Kf2 rather than 37. Kxg2? Doesn't Kxg2 win a bishop?

Aug-11-05  ThomYorke: <Palma Vest> You´re so precise to calculate the time you spend solving the puzzles. How do you do that?
Aug-11-05  alexandrovm: how about 36. ...Qxb1 37. Bxb1 Bxg2+ 38. Kxg2 Be1, winning a pawn. But only a pawn up and oposite colors, this could be only a draw. Then, how about 36. ...Ba6, exploiting the pin. So, 37. Qxa1 Bxd3+ 38. whatever move for white, and then Bxa1. With a piece up, black should win.
Aug-11-05  Nick816: This wasn't too hard to find
Aug-11-05  alexandrovm: <ThomYorke> yes, I agree with you.
Aug-11-05  sharpnova: <alexandrovm> you agree that palma vest is so precise? that's nice of you :)
Aug-11-05
Premium Chessgames Member
  YouRang: Good move. I wish I would have seen it. But I did see the obvious exchange that wins a pawn for black. I lazily figured that someone as good as Larson would find a way to win with that. I really need to leart to try harder.
Aug-11-05  Koster: I divide the problems into two catagories, idea problems and calculation problems. The hardest ones fit into both groups. This was an idea problem, exploiting the pin and the overworked bishop. The lack of calculation needed made it very easy. The endgame idea also wins, which spoils it spmewhat as a problem.
Aug-11-05
Premium Chessgames Member
  kevin86: This was a very elegant game of crossfire. White is trapped

IF:
37 QxQ BxB+ followed by BxQ
37 strange-either BxB is met by QxQ
37 Qc2 QxB#-
excuse the old notation-here it seems to really show the nuances of the puzzle.

Aug-11-05  MatrixManNe0: <ThomYorke> Normally, I'd give a sadistically sarcastic and ironic answer causing three people to be banned, ten people being added to ignore lists, and one person committing suicide, but eh. This is chessgames.com.

I noticed right away that black has to get rid of the queen for the other queen and that both queens are protected for the time being.

Black is obviously on the attack, but can't mate, and if black is to go into an endgame (which I doubt, as it is Thursday), he would have to win two pawns and try to get a bishop-of-same-color endgame (of course, my endgame theory is horrible so correct me).

So I noticed that the bishop is on the same file as the queen and, if the white queen weren't there, black would be able to safely capture it.

I also noticed that white's queen is defended by just a bishop. And that the bishop is on the same diagonal as the king.

But don't you hate it when you're looking for mate and it's just a simple win of a piece??

Aug-11-05  molle2006: Yes, did this one. Really nice cross pin!
If 37. Kf2, then Bxd3 38. Qxd3 Qxe1+ and black is one bishop up.
Aug-11-05  sharpnova: <MatrixManNe0> don't flatter yourself :p
Aug-11-05  Holden: 37. ♕x♕? ♗x♗ Zwischenschach! Simple, easily overlooked solution. Nice puzzle.
Aug-11-05
Premium Chessgames Member
  kevin86: Another nuance:If 37 ♔f2 ♗xe1+
38 ♔xe1 ♗xd3-queen is pinned
38 ♕xe1 ♗xd3-queen abandons the bishop
Aug-11-05  cuendillar: <kevin> that can't work 37.♔f2 ♗xe1+? 38.♔xe1 ♗xd3?? 39.♕xa1
37.♔f2 ♗xe1+? 38.♕xe1? ♗xd3??(♕xe1+ 39.♔xe1 ♗xd3 ) 39.♕xa1

On 37.♔f2 ♗xd3 seem to win the piece.

Aug-11-05  Happypuppet: <kevin86> Your variation 37 Kf2 Bxe1+ 38 Kxe1 Bxd3 loses a queen; you missed 39 Qxa1. =( I think instead of 37... Bxe1+, just play 37... Bxd3 instead.
Aug-11-05  sehling: 36. ...Qxb1 37. Bxb1 Bxe1 38.Kxe1 Bxg2 and the bishops are of the same color, with an entirely winnable endgame. Of course, the actual solution is the real one.
Aug-11-05  Caissanist: I got this one in about a minute. Yesterday, though (Morozevich vs Adams, 2001), I looked at it all day and was stymied. It looks like this happened for a lot of folks.

The funny thing is that, if you look at both puzzles after the fact, it seems like this one *should* be harder, since the solution is more complicated. But there's something about the Adams puzzle that makes it easier to wander down the wrong path. I got stuck trying to make other possibilities work, and this somehow made me unable to see what was objectively a very simple combo.

Aug-11-05
Premium Chessgames Member
  ajile: I was thinking QxQ BxQ and then Ba6+. I imagined that the king would have to move away from the e1 bishop and it would be undefended. But the king can go to F2. Bummer.

=: /

Aug-11-05
Premium Chessgames Member
  chessgames.com: If there's a theme to this week at all, it's "Easy moves that are hard to see."
Aug-11-05
Premium Chessgames Member
  kevin86: OOps,I nuanced myself into a bear trap-Of course,the correct reply to Kf2 is Bxd3---and wins a piece.
Aug-12-05  Palma Vest: <ThomYorke> 0.01 sec is not to be taken literally. It's just to refer to the immediate spot of the pattern. You dun hv to calculate the whole variation. Pattern comes first. Here it shows double pinning, the bishop is overloaded with guarding the queen and king. All you hv to do is to deflect it =)
Aug-12-05  alexandrovm: Now that's great, you see the diference? 0.01 sec doesn't bring any usefull information to share. Now, this last post of yours is really great. Thanks for this last post :)
Aug-12-05
Premium Chessgames Member
  patzer2: The winning move, and puzzle solution, 36...Ba6! combines the pin, deflection (i.e. removing the guard) and double attack tactical themes.
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