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Svend Hamann vs Bjorn Brinck-Claussen
Hastings-B (1962)
Neo-Grünfeld Defense: Delayed Exchange Variation (D75)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Aug-13-05  Eric Xanthus: Wow I totally missed this one. Once I saw the solution, I saw what I missed with mine. I wanted to mate on g2, so I went 16..Bxc3 17.bxc3 Qe2 and I continued (foolishly) 18.Bf2 Qxf3 19.Nf4 Bxf1 20.Rxf1 and a nice choice of moves from there for black. But of course this is all in my mind, since 18.Rf2 rains on my parade. So sad.
Aug-13-05  notyetagm: Gee, I saw the combination in like ten seconds. 16 ... ♗xg2 17 ♔xg2 is <decoying> the White king to the g2-square. 17 ... ♗xc3 18 bxc3 is <removing the guard> (illusory protection) of the White queen on a4. Then comes the killing <discovered attack> 18 ... ♘d5!, threatening both 19 ... ♕x♕ and 19 ... ♘x♗+ and meeting 19 ♕x♕ with 19 ... ♘x♗+ and 20 ... ♘x♕, with Black emerging a piece ahead.

I saw this combination almost immediately for two reasons. One is that I always try to <make my opponent's pieces loose> so I saw the ... ♗x♘c3 idea quickly. And second, I <investigate every move that makes my opponent move his king>, here the ... ♗x♘g2 idea. I put those two ideas together and I quickly saw the wicked <discovered attack> 18 ... ♘d5!.

None of the moves in Black's combination have forced replies so I would have checked the combination much more carefully before playing it. But it is after 1 am where I live. I just had to post this because I am so proud that I solved a Saturday puzzle in like no time flat.

Aug-13-05
Premium Chessgames Member
  jahhaj: Total failure. I was looking at 16...b5 which is very strong but not exactly winning.
Aug-13-05  lentil: i got all except i was going to play Nc2?? problem with analysing at the comp. on the board i think i would have got it.
Aug-13-05  Averageguy: This is suprisingly easy for a saturday puzzle.
Aug-13-05  child of my tears: Brilliant piece play by Brinck-Claussen. I also really liked 9...Nf4, removing white's important bishop and weakening the king position.

I didn't get it. I knew the knights would have to come off but I got nowhere near 18...Nd5!

Aug-13-05
Premium Chessgames Member
  Sneaky: Another "easy move that's hard to see." I totally missed ...Nd5.

<Child of my tears> Hey, the Opening of the Day is right up your ally, Benoni Defense (A56)

Aug-13-05
Premium Chessgames Member
  kevin86: Chessboard magic! White's queen is attacked and a piece must be lost-by means of an intermezzo fork.
Aug-13-05
Premium Chessgames Member
  patzer2: Today's puzzle solution 16...Bxg2! is followed by a second deflection 17...Bxc3 to set up the winning double attack (i.e. Knight Fork threat) 18...Nd5.

This move (18...Nd5) simultaneously threatens the unprotected Queen and the win of a piece after 19. Qxc4 Nxe3+ 20. Kf2 Nxc4 . Even worse for White is trying to protect the Queen, since 19. Qa3 Nxe3+ 20. Kg1 Nxf1 21. Rxf1 e6 gives Black an extra Rook and an even stronger winning advantage.

Aug-13-05  Happypuppet: The part that took the longest for me was figuring out what part of white's position was weak in a way that could be tactically exploited. Mate was impossible, because the rooks could handle defense. I eventually noticed the white queen was lose, so I found the solution from that. And I'm glad I rechecked, because I almost clicked in with Nc2?? (Qxc2) in mind. =/
Aug-13-05  Happypuppet: Woops. Typo. lose -> loose.
Aug-13-05  ckr: About 1 minute revealed the first 2 moves of the combination but I thought 18. Qe2+ was good and it turns out I missed the more decisive 18. Nd5 :=(
Aug-13-05  trumbull0042: Great, straightforward combination. I'm sorry I didn't spend more time on this, as surely I would have figured it out after about 20 minutes.
Aug-13-05  nateinstein: Finally got a Saturday and it didnt take me that long. I saw Nd5 right away after Bxg2, then I saw that the bishop on g7 would get rid of the knight on c3. Put the pieces together and the moves played themselves out. I may be wrong, but I think the combination could have been started with Bxc3 as well, but in that case only the exchange would have been won, where in this case a minor piece is won.
Aug-13-05  percyblakeney: <Colombiano> Black would take on e2 with check before recapturing the queen.
Aug-13-05  Colombiano: Thanks very much
Aug-13-05  inad: Any one examined 17. Rfc1
Aug-13-05  notyetagm: <patzer2: Today's puzzle solution 16...Bxg2! is followed by a second deflection 17...Bxc3...>

17 ... ♗xc3 is not a deflection. It is <removal of the guard>. The White c3-knight defends the White a4-queen. After the sequence 17 ... ♗xc3 18 bxc3 the White queen is no longer defended, making the discovered attack 18 ... ♘d5! possible.

Aug-13-05  Happypuppet: <inad>

16... Bxg2 17. Rfc1 Bxf3 18. Nd5 Qe2 19. Bf2 Bd4 - Bxf2# can't be stopped except by Bxd4 which leads to Qg2#. After 17... Bxf3 I think you've just lost a piece, unless I'm missing a better white 18th move.

Aug-13-05  sharpnova: i got this puzzle faster than that japanese guy who overclocked his P4 to 7 GHz's computer could calculate a digit of pi
Aug-13-05  child of my tears: <sneaky> A particularly unfortunate spelling mistake. I used to play modern benoni but gave it up as I kept getting spanked. Nowadays I'm into Petroff, Ruy Lopez and Queen Indian/Gambit. But I think benoni has good chances in the hands of a good player. See www.chessgames.com/perl/chessgame?g...

Kramnik is not always boring!

Aug-13-05
Premium Chessgames Member
  Gypsy: Given all the clues we got this week, this was an incremental puzzle -- horizontal pin or battery (batery), geometric forking motive, decoy, and knowing that it suffices to be allert -- the puzzle took 30-45 sec, estimated.
Aug-13-05  Giearth: Errr... Guys, I couldn't see the white ♔, black ♕ and ♖. Is this only my problem or CG.com's? Nice puzzle though.
Aug-13-05  Robin001: I came up with 16. ...Bxg2; 17. Kxg2, Bxc3; 18. bxc3, but I had trouble finding Nd5. I kept wanting to play Qe2+, but then after Bf2 I worked at finding something but only achieved brian overload and gave up. So I got the move correct, but not the follow up.
Nov-17-19
Premium Chessgames Member
  FSR: Brinck-Claussen's knights did a fantastic job!
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