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Natascha Bojkovic vs Zhao Xue
Women's Olympiad (2008), Dresden GER, rd 9, Nov-22
Spanish Game: Exchange. Normal Variation (C69)  ·  1-0


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Kibitzer's Corner
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Premium Chessgames Member
  Check It Out: Welcome to chessgames, <Mace>. Nice to see another person from my hometown Seattle. There are many great features on the site, enjoy!
Jun-30-10  I Like Fish: d'oh ... nuts ...
Premium Chessgames Member
  chrisowen: Dont mock ahh the Spanish flair black comes oops out of her shell too late. White casually finishes black off at a turtle's pace. Heads up horse on the rim is dim some people say but in this situation white holds a solid rearward camp. Force meets again it grind queen over fairing or Rf7 then this Qc2 stews her.
Premium Chessgames Member
  YouRang: <Once><So I guess there is a heirarchy at work at here. I would rather have a pat on the back than a kick in the butt. And I would rather have a kick in the butt than a pain in the privates. :-)>

Agreed. I'm sorry to hear that you had to endure such agony.

On the bright side, perhaps that experience will someday serve as the inpiration for one of your colorful chess analogies. ;-)

Jun-30-10  Patriot: <agb2002> Nevermind... After 40.Qg5 Rg8 41.Rxg7 Rxg7 42.Qd8+ Rg8 43.Qf6+ Rg7 44.Nh6 (quiet move--caution!) fails to 44...Qb1+ 45.Kh2 Qb8 defending and white may be forced to draw. "Check and defend" wins out again.
Premium Chessgames Member
  Eisenheim: I have to admit I stared at this and came up with Nf6 - even after I cautioned myself about the possible check and the black queen going 41 Qh6. Its interesting to read and anaylze why so many of us had the same thought process.
Jun-30-10  Patriot: This is really a great example where it takes a good thought process to find the best move. There are a number of moves that seem to be great candidates and careful analysis to rule them out (e.g. Nf6, Qd7, Qg5). Plus I never considered Rf7 since I couldn't see the simple refute to Qd7. Qg5 never crossed my mind either since Qd7 seemed to do the job.

Yesterday's problem is so different because there is no refute to Nxg5. Moving the queen to g6, for example, and the easy Nf3 leaves black wondering how to compensate for his material loss so it's a silly line to investigate at any depth. And it wasn't necessary to calculate the most critical line beyond a few moves since black had no counterplay. But in today's position there was quite a lot to look at and be precise about because it's hard to know right away which line is likely best.

Jun-30-10  Kinghunt: I found 40. Qd7. The rook cannot guard the bishop because then black will have to give up the queen after 40...Rg8? 41. Ne5! The bishop can't move because of the mate threat on h7, and so black's only defence is to guard the bishop with the queen: 40...Qc1+ 41. Kh2 Qg5. Now, white has no immediate attack, but after 42. Qxc6, white is up two pawns and simply winning.
Premium Chessgames Member
  Once: <YouRang> <patzer2> Many thanks for the words of sympathy. Deeply, deeply painful. And the doc's advice? Drink lots of water and flush the stone out. The passage from kidney to bladder was spectacularly painful. I am not looking forward to the next stage of the stone's journey, from bladder to the outside world...
Premium Chessgames Member
  Once: <Mace> Welcome to the site. That's a pretty impressive first post, I must say, on what has turned out to be quite a tricky wednesday. I look forward to reading more of your posts.
Premium Chessgames Member
  NARC: I had a hard time finding Qg5. I also looked for something spectacular.
Premium Chessgames Member
  agb2002: <Patriot: <agb2002> Nevermind... After 40.Qg5 Rg8 41.Rxg7 Rxg7 42.Qd8+ Rg8 43.Qf6+ Rg7 44.Nh6 (quiet move--caution!) fails to 44...Qb1+ 45.Kh2 Qb8 defending and white may be forced to draw. "Check and defend" wins out again.>


Jun-30-10  M.Hassan: <Once>: Sincerely hope you get better and the stone is in the outside world by now. Bests of everything
Jun-30-10  randyjohnson: i play 40 Nf6 and i think is the more forceful ways of win.

I believe this is the solution

Jun-30-10  mrriddler: Geez, I jumped on Nf6 as well only to see that it throws away the win. Black can defend with Qc1+ and Qh6 apparently.
Jun-30-10  wals: I thought I was smart picking the text move 40.Rf7 but Rybka 3 40.Qg5 #10 gave the reality check.

40.Qg5 Rg8 41.Ne5 Qb1+ 42.Rxb1 Re8
43.Rb7 Bxe5 44.Qh6 Bc7 45.Rxc7 Re1+
46.Kh2 Rh1+ 47.Kxh1 Kg8 48.Qg7#

Premium Chessgames Member
  CHESSTTCAMPS: <agb2002: My move 41.Nh6 is a blunder that spoils the victory: 40.Qg5 Rg8 41.Nh6 Bxh6 42.Qxh6 (better 42.Qf6+ Bg7 43.Rxg7 to get perpetual) Rxg3+ and Black delivers mate. A black day.>

The main reason for my visiting the analysis of <agb2002> is that it's generally so thorough and correct that I look to see what interesting lines I might have missed! The method of applying "touch and move" to a solution post, as <agb2002> did today is a good method for finding flaws in one's own analytical approach. However, I have not used this approach (as I could have today) because, frankly, it's more than I'm willing to type!

Jun-30-10  SufferingBruin: <Once> I am sorry to hear about the stones. While not life threatening, they are extremely painful.

My brother's a urologist and I know he recommends pulverizing them. I don't know how they do that but it is far less painful. I'll check with him. In the meantime, hang in there. We're thinking of you.

Jun-30-10  jheiner: 40. White to play.

White has N+P for B. White Q is hanging. Black has check on b1, c1 and d1. Black K has one legal move to g8.

Black has two defenders against White's three, and a perilous position. Look for mating combinations.

Candidates: Nf6

40. Nf6 (threating Qxh7#)

40...Bxf6? 41.Qxh7#
40...Rxf6 41.Rb8+

41...Rf8 42.Rxf8+ Bxf8 43.Qxf8#
41...Bf8 42.Rxf8+ (Kg8 43.Qxf6#) Rxf8 43.Qxf8#

Note that Black has spite checks (Qc1+ for instance), but the Black Q cannot get back to the defensive area. If we didn't check for this, automatic fail.

Lastly, one key to this position is to see that the Black Kh8 and Ph7 are susceptible to a simply mate Qf8.

Jun-30-10  jheiner: Ouch! Epic fail. I even looked at the "spite" checks. Thanks for the kibitzing gang.
Premium Chessgames Member
  michael104: Thank you, David2009, for the kudos. Just to summarize, the lines after 40.Qg5 Rg8 41.Ne5 (threatening Nf7+) are: 1) 41...Rf8 42.Qxg7#
2) 41...Bxe5 42.Qxe5+ Rg7 43.Qxg7#
3) 41...h6(or h5) 42.Nf7+ Kh7 43.Qf5#
4) 41...Qa2 42.Ng6+ hxg6 43.Qh4+ Bh6 44.Qxh6#
5) 41...Qc1+ 42.Kh2 Qxg5 43.Nf7#
Premium Chessgames Member
  michael104: And wals, a few comments above, has posted Rybka 3's longest line to postpone mate.
Jun-30-10  zooter: <Once> Hope you get better soon
Premium Chessgames Member
  jessicafischerqueen: FIRST ANNUAL POTTED PLANT BEST NON PREMIUM PUZZLE OF THE DAY POSTER Prize: One year free premium membership

Nominees so far:

<Resignation Trap>
<John McEnroe>
<Darth Stapler>

"Seconded nominees"


"Tripleonded nominees"

<suffering bruin>

The formal voting hasn't started yet, so all nominees are still in with a chance.

Nominations are still open, and should be dropped in Howard's house: hms123 chessforum

Jun-30-10  WhiteRook48: i have 40 Nf6
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