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Nana Ioseliani vs Xie Jun
EUR-ASIA Rapid Match Women (2001), Batumi GEO, rd 3, Sep-17
English Opening: Anglo-Indian Defense. Anglo-Grünfeld Variation (A16)  ·  1-0
ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
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Jun-13-07  Crowaholic: <kkshethin: I think 34 Rf1 followed by Bh6 will also be a nice combination>

Where is the winning plan for White after 34. Rf1 Qd3+ 35. Rf3 Qd7 36. Bh6 Qe7 ?

Jun-13-07
Premium Chessgames Member
  YouRang: <DIO: How about 34. Bh6 threatening 35. Rf1 and mate next move? >

I think you need to address the same idea: What if 34...Qd3+?

Jun-13-07  DIO: Thanks YouRang. As I write above, 34 ... Qd3+ will be followed with 35. Kh4, with no more checks.
Jun-13-07
Premium Chessgames Member
  playground player: When I tried Rxh7, my plan dissolved in perpetual check by the Black Queen. Congrats to <You Rang> for finding Kg2 as the way out of that mess! His talents are wasted as a mere butler.
Jun-13-07  DIO: YouRang, to your other point, with 35 ... Qe7, white plays 36. Rf1, with a double mate threat, one at f7 and one at f8. Again, tell me where I am wrong.
Jun-13-07
Premium Chessgames Member
  kevin86: Did someone switch the Monday and Wednesday puzzles? A possibility of queen checks by black forces a quick move for attack. ♖xh7! just screams out. It threatens mate If black attempt to stop the mate by ♖f8,white plays ♖h8+ taking the guard off the rook and mating very quickly.

black has only one check-which white parries with ease by hiding the ♔ at h4

Jun-13-07
Premium Chessgames Member
  YouRang: <DIO: Thanks YouRang. As I write above, 34 ... Qd3+ will be followed with 35. Kh4, with no more checks.>

35...Qd8+! You missed one! :-)
I think you'll find that black can adequately guard f8 and f7 now.

Jun-13-07  Justawoodpusher: Feels good to have seen all the lines here after missing yesterdays puzzle but I marvel about <prinsallan> having seen this all in less than 10 seconds.
Jun-13-07  Sredni Vashtar: For the benefit of those who cannot be bothered to read the prior postings and keep posting ideas that were refuted multiple times:

Perpetual check idea starting with 34 ... Qe1+ is refuted by 35.Kg2 (see <whatthefat> and <cu8sfan>, page 1 of comments).

34.Rf1 does not win after 34 .. Qd3+ and 35 .. Qd7 (see <scholes> and <tal lover>, page 1 of comments).

... Rf8 defense proposed for the black loses after white plays Rh8+ (<Gilmoy> and <dzechiel>, page 1 of comments).

The only novel ideas after the first page come from <DIO: How about 34. Bh6 threatening 35. Rf1> and <kkshethin: ... 34 Rf1 followed by Bh6> For the first one, the complete refutation arising from <DIO> and <YouRang>'s dialog is: 34. Bh6 Qd3+ 35. Kh4 Qd7 36. Rf1 Qe7+. For the second one, <Crowaholic> disposed of it already.

Jun-13-07  newton296: <kkshethin> I also saw 34) Rf1 with threat of mate after Q f7 + so doesn't black have too play his Q to d7 with ...Q d3+ r f3 ...Q d7 but now white has Bh6 threatning mate again with Q sak at f8 ! What can black do ? Am I missing some move here??
Jun-13-07  newton296: I missed that black can play ... Qd7 after Bh6 covering f8 . nevermind!
Jun-13-07  syracrophy: Why not continue the checks with 33...Qd3+? The exchange of queens is not possible, since it´s a winning endgame for Black
Jun-13-07  newton296: I guess i'm too lazy today as I found Rxh7! in seconds but gave up on the line due to blacks checks . lazy lazy tss tss!
Jun-13-07  Crowaholic: It's interesting to see how much controversy the 34. Rf1 and Bh6 moves have caused. I'm with <YouRang> here who already showed how Black can defend against the immediate mate threats. I'd even say that not only does White not win the game after either of these moves, but will have trouble drawing. The short-term pressure on Black, requiring a sharp (but not hard to find) defense is deceiving and with the White attack stalled some moves later, Black's material advantage should eventually decide the game.

Proving a win is difficult, though, and I'll settle on providing more lines that, at least, White does not win.

E.g. 34. Bh6 Qd3+ 35. Kh4 Qd8+ 36. g5!? (risky to lock in the bishop but Kg3 and Kh3 allow Black to repeat, for Qf6 see below) Qe7 37. Rf1 c5 (Black has a free tempo) 38. Qf6 Nc6

is another line where Black seems to be able to defend quite well. With the two pawns more and doubled White pawns (and in this case the locked-up bishop), Black should even be able to win the game from this point on.

36. Qf6, on the other hand, allows Black to exchange queens and likely win, being two pawns up, even though the queen exchange undoubles the e pawns and produces a strong passed pawn on f6.

Jun-13-07  DIO: YouRang: You are right my man! I missed Qd8+ (or Qe7+ for the same matter). Sredni gave the correct line as well. Cheers!
Jun-13-07  WarmasterKron: Bah. I quickly saw 34.Rxh7 Kxh7 and mate in two, but started thinking about what happens if 34...Qe1+. I saw a phantom perpetual and gave up.
Jun-13-07  MacFyffe: The joy of this puzzle isn't so much that the first move for white is particularly difficult to find, but in exploring the complexities of the lines that follow. There are certainly enjoyable difficult puzzles, and then there are puzzles like this one whose joy is in running down the many little rabbit trails that follow from this initial move.

I found the initial 34.Rxh7 in moments but have spent quite a while working out all the details.

Thanks to <Sredni Vashtar> for summarizing the posts.

Jun-13-07  actionhero56: what about 34...Rf8
Jun-13-07
Premium Chessgames Member
  fm avari viraf: I saw it instantly 34.Rxh7 since Kxh7 then White mates in 2. I was little bit worried about the perpetual checks but then White could easily duck out of it.
Jun-13-07  ruzon: I think 26 ... Na5 is the last weak move that allows White to launch his plan. Nb4 threatening Nd3 seems to have much more potential.
Jun-13-07  Dr.Lecter: Is this the first time <cg> posted the puzzle's difficulty? It was really helpful of them
Jun-13-07
Premium Chessgames Member
  Mendrys: Whew, after yesterday's debacle where I totally whiffed on a Tuesday puzzle it feels better to get Rxh7 today. I am happier that on 34...Qe1+ I was able to see that 35. Kg2 Qe2+ 36. Kh3 Qd2+ 37. Kh4 escapes the perpetual.
Jun-13-07  unferth: <actionhero56: what about 34...Rf8> 35 Rh8 mates quickly
Jun-14-07
Premium Chessgames Member
  patzer2: The puzzle solution 34. Rxh7! yields an easy mate after 34...Kxh7 35. Qf7+ Kh8 36. Bf6#. However, the more difficult task is finding the surprise King maneuver 34. Rxh7! Qe1+ 35. Kg2 Qe2+ 36. Kh3 Qd2+ 37. Kh4! to escape Black's desperate attempt at a draw by perpetual check.
Jun-14-07  MostlyAverageJoe: Embarassingly, my 7-year old solved this puzzle faster than I did. Zeroed in on the Rxh7 right away, without wasting any time on attempts along the f-file. And immediately had the idea of hiding the king on h4, even if it took him a while to figure out how...
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