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Anna Vitalyevna Zatonskih vs Irina Krush
US Championship (Women) (2012) (rapid), St Louis, MO USA, rd 1, May-20
Modern Defense: Queen Pawn Fianchetto (A40)  ·  0-1
ANALYSIS [x]

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Kibitzer's Corner
May-20-12
Premium Chessgames Member
  HeMateMe: Looks like 35...Q-g3+ wins, after white takes the queen the two rooks deliver mate on the second rank.
May-20-12
Premium Chessgames Member
  Jimfromprovidence:


click for larger view

The final position above has some subtlety to it as white does not have to take the offered queen after 35...Qg3+.

It's at least a Tuesday level puzzle if you factor in black's best followup to 35...Qg3+ 36 Kh1, below.


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May-20-12
Premium Chessgames Member
  HeMateMe: I knew that, but black's queen picks up both the g and h pawns, with check. White's King is dogmeat, irregarldess of the continuation.
May-21-12  TheBish: Irregardless? Isn't that a double negative?
May-21-12  Jason Frost: <Jimfromprovidence>

Looks to me like there are a lot of winning lines for black. I guess, simplest is 35...Qg3+ 36. Kh1 Qxh3+ 37. Kg1 Qg3+ 38. Kh1 Rxe1 39. Rxe1 (39. fxg3 Rxf1+ ) Qxf2 and white either runs out of checks quickly and loses or settles for a hopeless endgame.

But, I can't see how 37. Qxg4+ isn't winning, though allowing the white king to the second rank will probably make it take longer. And the immediate 35...Rxe1 should win as well.

May-21-12
Premium Chessgames Member
  HeMateMe: It's quickest just to keep the black queen near the f2 square, so black's remaining Rook can safely grab the f2 pawn. The g4 pawn is also an easy grab, if the endgame needed it to disappear.
May-22-12
Premium Chessgames Member
  Jimfromprovidence: <Jason Frost> This is the line I thought was best.

35...Qg3+ 36. Kh1 Qxh3+ 37. Kg1 Qxg4+ 38. Kh1 Kg7!


click for larger view

Now white can't check on b8 or now on d4.

The threat is 39...Rd5+, seeing 40...Rh5# and white has to give up his queen to stop it.

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