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Gata Kamsky vs Anish Giri
FIDE Grand Prix Beijing (2013), Beijing CHN, rd 5, Jul-09
Sicilian Defense: Canal Attack. Main Line (B52)  ·  0-1

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Jan-15-14  abuzic: Black could finish earlier with 38...Nf2+
38...Nf2+ 39.Kh2 Qd6+ 40.Kg1 Nxh3+ 41.Kh1 Nf4;


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38...Nf2+ 39.Kg1 Nxh3+ 40.Kh2 Qh5 41.gxh3 Rd3;


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38...Nf2+ 39.Qxf2 Qxc1+ 40.Kh2 Rd1.


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Jan-15-14  Patriot: <<chessgames.com>: Our apologies for the error: this puzzle is 43? and not 43.?> Actually I learned more from move 43.?. It became a desperate attempt to find a move that doesn't lose, but that move doesn't exist! Sometimes that's what we are faced with, and this was a good learning experience! It's funny I also decided 43.Kh1 as in the game.
Jan-15-14  Cheapo by the Dozen: I'm probably missing something here.

43 ... Rxh3+ wins the queen by an f3 knight fork in most variations, but I don't see how to punch through if White turtles up with

44 Nh2 and maybe
45 Qg1.

On the other hand, Black is 3 pawns up at that point with the more active position, so what's not to like?

43 ... Nb3 also looks good.

Jan-15-14  abuzic: Black could finish even earlier with 36...Nf1+

36...Nf1+ 37.Kh1 Qh2#

36...Nf1+ 37.Kg1 Qh2+ 38.Kxf1 Rf4+ 39.Ke2 Qxg2+ 40.Kd3 <40.Kd1 Rf1> 40...Rf3+ 41.Kc4 Qa2+ 42.Kd4 <42.Kb4 Qa3+> 42...Qc2 43.Rd1 Qb2+ 44.Kc4 Qb3+ 45.Kd4 f6.


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Jan-15-14  morfishine: <43...Rxh3+> wins instantly

(1) <44.gxh3> 44...Qd5+ 45.Kg1 (or 45.Kh2)...Nf3+ forks the White Queen

(2) <44.Kg1> 44...Nf3+ again forking the Queen

*****
PM: <Patriot> Nice job on finding White move 43! Seriously, this is further evidence of your thorough, proven methods

*****

Jan-15-14  gofer: <43 ... Rxh3+>

44 Kg1 Nf3+
45 Kf2 Nxe1

44 gxh3 Qd5+
45 Kg1/Kh2 Nf3+
46 Kf2/Kg3 Nxe1
47 Rxe1 Qxa5

<44 Nh2 Rg3>

Hmmm, not a massive combination leading to a quick kill, but black now has a 3 pawn advantage and white is completely on the defensive. This should be enough for a win...

~~~

Hmmm, immediate resignation??!!

Jan-15-14  morfishine: <gofer> I never considered 43...Rxh3 <44.Nh2>. True, it also loses, but its the slowest way for White to lose

*****

Jan-15-14
Premium Chessgames Member
  whiteshark: <43... Rxh3+>, and that's it.
Jan-15-14  zb2cr: Took a lot of effort, but I found this one.
Jan-15-14
Premium Chessgames Member
  Penguincw: Easiest puzzle this week yet. :| 43...Rxh3+ 44.gxh3 (44.Kg1 Nf3+ picks up the queen) Qd5+ 45.K whatever Nf3+ picks up the queen.
Jan-15-14  StevieB: After missing Monday and Tuesdays puzzles I finally nailed this one. Thought I was losing my touch. Gotta have patience to play this game. You rush, you lose.
Jan-15-14  LoveThatJoker: <43Rxh3+!>

A) 44. gxh3 Qd5+ 45. Kg1/Kh2 Nf3+

B) 44. Kg1 Nf3+

C) 44. Nh2 Ne4 (Threatening 45Ng3+) 45. gxh3 (45. Qxe4? Qxc1 mating) 45Ng3+ 46. Kg2 (46. Kg1 Qxc1 ) 46Ne2+ 47. Kf2 Nxc1 48. Nf3 (48. Qc3+ Qf6+ ) 48Qf4 as Black is three pawns to the good.

LTJ

Jan-15-14  WoodPushkin: Greetings

Very nice finish.

43...Rh3+! demonstrates Whites leucopenia monochromy as Hans Kmoch would say and is its downfall. Control of light and dark squares in balance is essential.

Analysis, Calculation, Execution: Study!!

Jan-15-14
Premium Chessgames Member
  kevin86: Black will soon win the queen as the rook sac opens white's defenses like a can opener.
Jan-15-14  Cheapo by the Dozen: I like the idea from <LoveThatJoker>, but I'm not sure how it works against something like Rc6.

Another interesting response to 44 Nh2 is simply 44 ... Ra3. It doesn't force immediate simplification, but it does seem to elevate White's material lead to 4 pawns.

Jan-15-14
Premium Chessgames Member
  gawain: This took a bit of thought. I did see the main point: after 43...Rxh3+ 44 gxh3 comes the killing 44...Qd5+ which leads to a knight fork of Q and K on move 45
Jan-15-14  LoveThatJoker: <Cheapo by the Dozen> Thanks for the kind consideration.

As an idea, I'm thinking that after 43...Rxh3+! 44. Nh2 Ne4 45. Rc6 Qd5 is a good way for Black to proceed.

If 46. Rxa6 Rd3 is strong. If 46. gxh3 Qxc6 and Black is clealy winning.

Lastly, if 46. Qa1+ e5 47. gxh3 (47. Rxa6 Rd3 ) 47...Nf2+! 48. Kg1 Nxh3+ picks up the White Queen.

LTJ

Jan-15-14
Premium Chessgames Member
  offramp: This week's theme is <the win is forced when a black major piece is moved to black's sixth rank on the rook- or knight-files>.
Jan-15-14  cjgone: Didn't notice 4.Nh2, but I suppose the huge pawn advantage is sufficient.
Jan-15-14  Patriot: <morf> <<Patriot> Nice job on finding White move 43! Seriously, this is further evidence of your thorough, proven methods> Thanks! It was really a lot of fun, because usually there is one devastating move and if you find that then all your efforts are focused on that one candidate. But in reality, we often have to search for candidates and test each one and sometimes when losing we have to search frantically to see if there is a way out or at least a way to complicate things. But it also shows that one cannot analyze every candidate in great detail when the time is dwindling. You have to get a feel for your options and narrow them down to focus on the few good ones. This kind of stuff just doesn't happen much with "play and win" problems, and it was refreshing to try it.
Jan-15-14  BOSTER: The pos. Black to play 36... looks like an exquisite composition.


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After 36...Nf1++ 37.Kg1 Qh2+ 38.Kxf1 Rf4 39.Ke2 re4 + game is over. Read <abuzic>

Jan-15-14  PJs Studio: I looked at Rxh3 and Qd5 as the only candidate moves and I couldn't see the Q check forces the white king onto a forking square...

I stink at Chess tactics and they're the best part of my game!

Help me?!? Is it like pro golf? Are these guys just - that good?

Jan-15-14  PJs Studio: I take that back... 90% of you could run me off the table... It doesn't take a pro chess player to kick the crap out of me ;)
Jan-15-14  bachbeet: Just updated Java and now can't view the chessboard. I hate that!
Jan-15-14  WhiteRook48: I decided that 43...Rxh3+ is the most likely.
44 gxh3 Qd5+ and whichever way the king dodges, 45 Kh2 or Kg1, 45...Nf3+ wins the queen. And if 44 Nh2, I had 44...Nf3!? (not sure if that move is sound or not, I can't actually see the board because somehow Java has made me unable to view the chessboard) and then 45 gxf3 Qf4, 46 Qg1 Rxh2+ 47 Qxh2 Qxc1+. The queen is overloaded and can't defend the knight and rook simultaneously. Unfortunately, I think 46 Rc2 refutes my second line.
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