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Elisa Maggiolo vs Damian Suarez
ARG-ch U18 (1994), Buenos Aires, rd 1
Formation: King's Indian Attack (A07)  ·  0-1

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Aug-08-14  Nick46: <diagonalley: fiddlesticks! :-(> agreed
Aug-08-14  cocker: <gofer> Yes nice to see knight on h1 playing a part.
Aug-08-14
Premium Chessgames Member
  agb2002: Black has a knight for a rook.

White threatens 47.Qxg6+ and 47.Rh2+.

The obvious 46... Qxg2 loses miserably to 47.Qh5+ Kg8 48.Re8#.

The rook on g2 prevents 46... Rxe2#. Hence, 46... Qg3+ 47.Kd2 (47.Rxg3 Rxe2#) 47... Rd1+

A) 48.Kxd1 Qxd3+ 49.Ke1 (49.Kc1 Qc2#) 49... Nc2+ 50.Kf1 Qd1#.

B) 48.Kc3 Qxd3+ 49.Kb2 Qb3#.

Aug-08-14
Premium Chessgames Member
  offramp: Brilliant game! 90% tactics!
Aug-08-14
Premium Chessgames Member
  Richard Taylor: I solved this as soon as I saw the Q sac idea.

Nice counter attack by Black who may have been lost earlier.

Aug-08-14  David2009: Missed it! I saw 46...Qg3+ and if 47.Rxg3?? Rxe2# but could not spot the follow-up after 47.Kd2, so analysed the false trail


click for larger view

46...Rxe2+ 47.Rxe2 Qg3+ (47...Qg1+ does not work either: 48.Kd2 Nf3+ 49.Kc2) 48.Kd2 Qxf4+ 49.Kd1 Qf1+ 50.Kd2 Nf3+ and White escapes to victory with 51.Kc3.

Aug-08-14  morfishine: I'm in the <46...Rxe2+> camp

I never even saw 46...Qg3+, which is odd since I saw White King boxed in by Rook and Knight; for example, 46...Ng3 47.Rxg3 Rxe2#; Of course, after 46...Ng3 White doesn't play 47.Rxg3???, but continues 47.Qxg7+ Qxg7 48.Qxg7+ Kxg7 49.Rxg3+

*****

Aug-08-14  SuperPatzer77: <KDavid2009> 46...Rxe2+ 47.Rxe2 Qg3+ (47...Qg1+ does not work either: 48.Kd2 Nf3+ 49.Kc2) 48.Kd2 Qxf4+ 49.Kd1 Qf1+ 50.Kd2 Nf3+ and White escapes to victory with 51.Kc3.>

<David2009> 46...Rxe2+!, 47. Rxe2 Qg3+, 48. Kd2 Qxf4+, 49. Kd1 Qf1+, 50. Kd2 < You missed 50...Qxe2+> forcing mate

SuperPatzer77

Aug-08-14  morfishine: BTW: Great Game! Thrilling play by both players
Aug-08-14  landogriffin: Got Qg3+, but not Rd1+ follow up :(

<agb2002> - just to say your last line doesn't end in mate, but instead the rather nasty 'cold shower' - 50. Qxb3. It is obviously possible to force mate with moves other than 49...Qb3 though, so the general idea is right!

Aug-08-14
Premium Chessgames Member
  Penguincw: Oh! I was wondering why it was so easy, but then I realized 46...Qxg2 does not come with check, so white has time to play 47.Qh5+ Kg8 48.Re8# 1-0. :|
Aug-08-14
Premium Chessgames Member
  pittpanther: I did not even look at Qg3 because after I saw that Rxe2 forced mate I stopped looking.
Aug-08-14  meetvirgo2005: Guess this is my first Friday puzzle I solved completely (with Qg3 line). Didn't consider Rxe2 since it was forced mate in Qg3. Happy since I got the wednesday one wrong.
Aug-08-14  dfcx: After sometime I finally got it!

First looked at 46...Qxg2?? 47.Qh5+ Kg8 48.Re8#.
So the choice is limited either Rxe2+ or Qg3+. Rxe2 does not work - the best black can get is a draw. Let's try
46...Qg3+ 47.Kd2 (Rxg3?? 48.Rxe2#) Rxd1+! forces king to d1 48.Kxd1 Qxd3+ 49.Ke1 (Kc1? Qc2#) Nf3+ 50. Kf1 Qd1#

Aug-08-14
Premium Chessgames Member
  Sneaky: My motto: if you can move your queen to such an audacious square, with check, and it is immune from capture, do it.
Aug-08-14  MarkFinan: ..RxN RxR.. Qg3+ ke2 Qxf4+ kd2(Obviously forced to avoid the mate in 1)


click for larger view

A simple mate in 3.. Although black does it differently I think this is just as good. Would I have got it if I didn't know I was looking for the mate?? I think I would have but it would probably have taken me 10 moves as opposed to 7 because I know the mate is there somewhere. ✌

Aug-08-14
Premium Chessgames Member
  kevin86: I saw the queen check, but I missed how white can decline the sac and still be beaten.
Aug-08-14  Rookiepawn: Yessssss! I made it through 46 ... Qg3+, couldn't make Rxe2 work but happy enough. Once I saw the weakness in d3 it went easily.

I find interesting the fact that a mate threat against the winnng side makes it somehow easier for the kibitzer: you know you can discard all lines with no check. It is much harder for the player though, since he doesn't know he is the winning side yet.

Aug-08-14  Megash: It was pretty ez quiz compared to the one from the game Hou Yifan vs Li Chao.

Btw. Who is chrisowen and what language he is speaking?

Aug-08-14  M.Hassan: "Difficult"
Balck to play 46...?
Black has a Knight for a Rook

I noticed that if Rook on g2 can be diverted eg. to g3, then ...Rxe2# Hence:

46.........Qg3+
47.Kd2 Rd1+!!
48.Kxd1 Qxd3+
49.Ke1 Nc2+
50.Kf1 Qd1#

48.Kc3 is a possible escape route for the King which I have not followed it

Aug-08-14  BOSTER: It's not so easy to lose such pos. like white to play 33.


click for larger view

After 33.Rxb7 Qxb7 34.e5 Q move 35.exf6 Bxf6 and white the piece up or like in the game 36.Qd5+.

Aug-08-14  greenfield67: 46...Re2+ looks promising, but I think we can do better, exploiting the fact that the White knight is pinned, and the g2 rook is tied to the defence of the knight. This gives us one more move to manoeuvre the queen to a better square. So 46...Qg3+ 47.Kd2 Re2+ and now (1) 48.Re2 Qf4+, with (1a) 49.Kc3 Qc1+ 50.Rc2 Qc2#, or (1b) 49.Ke1 Qc1#, or (1c) 49.Kd1 Qf1+, when (1ci) 50.Kd2 Qe2+ 51.any Qc2#; (1cii) 50.Re1 Qd3+ 51.Kc1 Qc2#, or (1d) 49.Re3 Qf2+, when (1di) 50.Re2 Qe2+ 51.any Qc2#; (1dii) 50.Kc1 Qc2#; (1diii) 50.Kd1 Qc2+ 51.Ke1 Qc1# (which is my favourite variation since the Nh1 comes into play). Alternatively, the king can try to run away, relying on Black overcommitting with threats of mate on g7 and perpetual on h5/e8. Then (2) 48.Kc3 Qe1+ 49.Kc4 Qb4+ (took me a long time to see this; Qc1+ looked more natural) 50.Kd5 Qb3+ and Black can exchange queens then pick up the rook.
Aug-08-14  greenfield67: Hmm. Re2+ turns out just the same as my line, by transposition. Having spotted Qg3+, following up with Rd1+ would have been more elegant.
Aug-09-14  marcwordsmith: YAY! I got a "difficult" one. In less than five minutes! Just had to brag ...
Aug-09-14
Premium Chessgames Member
  agb2002: <landogriffin: ...
<agb2002> - just to say your last line doesn't end in mate, but instead the rather nasty 'cold shower' - 50. Qxb3. It is obviously possible to force mate with moves other than 49...Qb3 though, so the general idea is right!>

Thank you for the correction and yes, Black only needs to play 49... Qc2+ 50.Ka3 Qc3+ and mate next.

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