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Adel Choukri vs Klaus Kuenitz
Tradewise Gibraltar (2012), Catalan Bay GIB, rd 3, Jan-26
Dutch Defense: Staunton Gambit. Accepted (A82)  ·  1-0


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sac: 15.Nb6+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 3 ·  Later Kibitzing>
Feb-07-12  solskytz: Two things wrong from a player's point of view.

From an apprentice analyzer point of view, there's actually a third thing wrong - and that is that you should strive to analyze first moves that limit as far as possible the choices available to the defence.

Why? Because 1) it works so often (it's harder to find a good moves when you have only 1 available than when you have 29 available), and -

2) it's much easier to calculate, and faster.

If you found nothing quick and forcing (today's a Tuesday so that's practically out of the question), only then examine the quiet, delicate, elegant, not-so-obvious, subtle, exquisite "GM understanding" move...

I know that Bf5 looked like a mating threat to you - the point is, how far does it limit the available responses by black? First examine something that doesn't give him a lot of choice (if any)

Feb-07-12  solskytz: <once> in this game white has also something else that black hasn't...

This is an 2115 rating, as opposed to 1686

Also makes some kind of a difference...

Feb-07-12  solskytz: White was very considerate in this game, giving black a rest day quickly and easily - and actually without any rating loss, embarrassment or hard feeling. An example for all!
Feb-07-12  sevenseaman: Very nice of <CG> offering a weekly puzzle from the most recent games. Its a welcome step. Aronian's 41...Ne1 in A Giri vs Aronian, 2012 is too well-known today but it will make a very entertaining and deeply educative puzzle some day hence.
Premium Chessgames Member
  Patriot: White is down a pawn for the bishop pair.

The position almost looks primed for Boden's mate, but not quite--the pieces just aren't poised for this.

At first I wanted to play 15.Nb6+ Nxb6, and thought it would be nice if I could get the bishop to f5 first. But that doesn't work since 15.Bf5?? Qxc4. So...

15.Nb6+ Nxb6 16.Bf5+ e6 17.Rxd5 Nxd5 18.Bxg4 wins queen for rook.


15.Nb6+ Nxb6 16.Bf5+ Qxf5 17.Rxf5 wins queen for 2 pieces.

Premium Chessgames Member
  Xeroxx: I am puzzled.
Premium Chessgames Member
  Patriot: In the first line, Houdini points out 18.Qxe6+ Kc7 19.Qxd5! since 19...cxd5 20.Rc3#. But I'm perfectly happy with the simplification used above. A "win is a win". Simplifying is a good way to test whether a variation works or not when looking ahead. But you also have to watch out for counter-threats.
Premium Chessgames Member
  James D Flynn: I saw the game continuation very quickly but black can play Qxf5 and after Rxf5 retreat his N to d7 and the other N to e5 and soldier on with 2 pieces for the Q. I suggest 16.Rf5 and the only square the Q has is g8. I would expect to find a mate after 16.Ra5 e6 but haven't seen one yet.
Feb-07-12  King Death: The loser of this game has a lot of miniatures under his belt, the trouble is he's on the wrong end of em.
Feb-07-12  zb2cr: 15. Nb6+, Nxb6; 16. Bf5+ uncovers an attack on the Queen. See comments by other posters for details, as I have nothing to add,
Premium Chessgames Member
  CHESSTTCAMPS: White is a pawn down, but has the bishop pair and much more activity, including a R-B battery to unload against the Qd5. However, white can't immediately put the battery to good use because the Bd3 is required to defend Nc4, e.g. 15.Bf5?? Qxc4 16.Rd4 Qa6 and black has won a piece. So white must turn Bf5 into a check.

15.Nb6+! (does the trick, winning the queen) Nxb6 16.Bf5+ and now:

A) 16... Kc7 17.Bxb6+ Kxb6 18.Rxd5 cxd5 19.Bxg4 leaves white with a Q for a R.

B) 16... e6 17.Rxd5 Nxd5 18.Bxe6+ followed by 19.Bxg4 does the same.

C) 16... Qxf5 17.Rxf5 Nxd5 18.Rxf8! Rhf8 (or Rdxf8) 19.Qe6+ Kc7 20.Qxg4 also wins Q for a R.

Feb-07-12  LIFE Master AJ: I saw 15.Nb6+ and then 16.Bf5+ almost right away ... but I spent a lot of time looking for something better. (I guess just because its a Tuesday, there is no guarantee of a Queen-sack, followed by a mate.)
Feb-07-12  David2009: A Choukri vs K Kuenitz, 2012 White 14? Puzzle position:

click for larger view

Link to Crafty Endgame Simulator: The challenge is to win against the ES without using a computer. Not as easy as it looks!

Feb-07-12  VincentL: "Easy"

The black queen is lost after 16. Nb6+ Nxb6 17. Bf5+.

Continuing 18.....Kc7 19.. Rxd5 cxd5 white emerges with Q for R + B + P and a better position.

Hardly decisive but I presume this is the solution. Letīs check.

Feb-07-12  stacase: When you're the one doing the discovering and forking, discovered checks and forks are just ever so neat.
Feb-07-12  TheTamale: Whoo hoo, got it.

Algorithm for a Tues. puzzle:

1. Look for an obvious strong move (such as a knight fork) that is impeded by the placement your opponent's pieces;

2. play the move anyway; and

3. look for an effective follow-up.

This is not a sure-fire algorithm, but it is an algorithm nonetheless.

Premium Chessgames Member
  dzechiel: <<Once>: There isn't really a word for it, so I guess we are going to have to make one up.

If we look at the puzzle position, we can see that white has a lot of ... something ... that gives him attacking chances.>

I would have said that white has a lot of "pull". But I like "macguffin" as well.

Feb-07-12  scormus: <David2009 ... Not as easy as it looks!>

the trick is to play the Q winning move with such confidence and smugness that the opponent resigns before thinking of how to make your task difficult. A bit like dancing in celebration when the final bell goes, in the hope you'll influence the judges decision

Premium Chessgames Member
  kevin86: I was looking for a mate and missed the winning of the queen. I Welkered it-
Premium Chessgames Member
  lost in space: Why ever this one took me ages. I was so focused on enabling the royal frock Nb6+ that I missed (nearly) the solution.

After I stared onto the screen and the screen saver kicked in twice I decided to leave and do something else. When coming back it made "click". So easy!

15. Nb6+ Nxb6 15. Bf5+ and it is all over. Good night, 1:0

Premium Chessgames Member
  chrisowen: <lost in space> noble in stead man knight eternal bright champion

king wing it damp air in per icicles it 0-0-0 in the democratess

d5 in ty down knightd7 ate light b6 or now and bf5+ von king

black falls on his sword fishes lump in game slide a brethe in

social knights lounger in b6 I ment pikes! It serious in deep son

ba7 pockets pawn to boot sh long castle ng4 undid your length the

queen of the street it shop but not see a shrewd investment past

our in grave too a merengue stint ne5 in span shindig in joki

aint it single in rear under stone bf5 lash in the pan c4 roped

off so order delve in cook it enough meatloaf against my dear

chowki nb6 stir forth xb6 eg prime gamble HS in no time like

future rears again drew in e4!

Premium Chessgames Member
  doubledrooks: 15. Nb6+ Nxb6 16. Bf5+ with a discovered attack on the Black queen wins material for White.
Premium Chessgames Member
  Dionysius1: It's not so much the material advantage, as the mating net starting with Qb4, after the exchange on b6 and the winning of the Q for rook and minor piece.
Feb-07-12  newton296: I saw 15.Nb6+ and then 16.Bf5+ almost right away ... but I spent a lot of time looking for something better. (I guess just because its a Tuesday, there is no guarantee of a Queen-sack, followed by a mate.)
Premium Chessgames Member
  Penguincw: Darn! I'm still mixing up the order. :-\
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