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Irina Bulmaga vs Jessenia Rojas Solano
Women's Olympiad (2008), Dresden GER, rd 11, Nov-25
Formation: King's Indian Attack (A07)  ·  1-0
ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
May-23-18  paavoh: Very tricky, because it was hard for me to see the Queen moving "backwards" from g4 to h3. After finally finding it, the rest was quite easy. A very good puzzle!
May-23-18  et1: Black has had an interesting life - chess, university and now politics . check here:https://www.youtube.com/watch?v=JVJ...
May-23-18
Premium Chessgames Member
  ChessHigherCat: I got

31. Qg4+ Kxh6 32. Bf3 Qc1+ 33. Kh2 Qg5 34. Qh3+ Kg6 35. Qxh7#

Let's see if it's right.

May-23-18
Premium Chessgames Member
  Richard Taylor: It is a good puzzle. A case of checking the checks!
May-23-18
Premium Chessgames Member
  Richard Taylor: Yes I think it is one of those you almost expect something dramatic like Rg7+ which is interesting. But the problems are based on real games. Some of these 'easy' ones are hard...
May-23-18
Premium Chessgames Member
  ChessHigherCat: leRevenant: <UR IV:> I had something different: 31.Qg4+ Kxh6 32.Bf3 ditto>

tritto

May-23-18  Lambda: I went for Be4+ too. Didn't consider Qg4+ simply because I considered Be4+ first, and it worked.
May-23-18
Premium Chessgames Member
  takchess: Its a Happy Wednesday. Saw it quickly.Black cant effectively block the check and gobbles up the bishop. After the next check,This sets up the two major pieces fields of force to meet on h6. Qh6 +
May-23-18  saturn2: Having sorted out 31 Bg5 and 31 Rg7+ I finally saw 31 Qg4+.

31 Be4+ which leads to sacrificing 2 bishops I never considered.

May-23-18  mel gibson: There were 2 solutions: 31.Qg4+ or 31. Bg7

Stockfish 9

31. Qg4+
(31. Qg4+
(♕f4-g4+ ♔g6xh6 ♕g4-h3+ ♗f6-h4 ♕h3xe6+ ♗h4-f6 ♕e6xf6+ ♔h6-h5 ♕f6-f5+ ♔h5-h6 ♖b7xh7+) +M6/68 5)
White wins mate in 6

or

31.
(31. Bg7
Qc1+ (♕a3-c1+ ♕f4xc1 ♗f6xg7 ♕c1-f4 ♗g7-f6 ♕f4-g4+ ♗f6-g5 ♕g4xe6+ ♗g5-f6 ♖b7-f7 ♖c8-g8 ♕e6xf6+ ♔g6-h5 ♖f7xh7+ ♔h5-g4 ♗g2-f3+) -M8/56 12)

White wins mate in 9

May-23-18  awfulhangover: I went for 31.Bg7, and it's good!
May-23-18
Premium Chessgames Member
  ChessHigherCat: <Mel Gibson> Are you saying the 32. Bf3 variant is wrong here?:

31. Qg4+ Kxh6 32. Bf3 Qc1+ 33. Kh2 Qg5 34. Qh3+ Kg6 35. Qxh7#

May-23-18
Premium Chessgames Member
  Jimfromprovidence: Side puzzle after 31 Bf3 Be7.


click for larger view

White to play and mate.

May-23-18  Carlos0012358: 31.Qg4+ Kxh6
32.Qh3 Bh4
33.Qxh4 Kg6
34.Qxh7+ Kg5
35.f4+. Kf6
36.Rf7#
May-23-18
Premium Chessgames Member
  ChessHigherCat: <JfP> It looks like there are a lot of subvariants but here's one of them anyway:

31. Bf3 Be7 32. Qg4+ Kxh6 33. Qh5+ Kg7 34. Qg5+ Kf7 35. Bh5+ Kf8 36. Qf4+ Kg8 37. Bf7+ Kf8 38. Bxe6+ Ke8 39. Qf7+ Kd8 40. Rd7#

May-23-18
Premium Chessgames Member
  ChessHigherCat: ChessHigherCat: <JfP> Here are two more solutions to your puzzle: 31. Bf3 Be7 32. Qg4+ Kf7 33. Qg7+ Ke8 34. Bh5+ Kd8 35. Qg8+ Bf8

31. Bf3 Be7 32. Qg4+ Kxh6 33. Qh5+ Kg7 34. Qg5+ Kf8 35. Qh6+ Kg8 36. Qxe6+ Kg7 37. Rxe7+ Qxe7 38. Qxe7+ Kg6 39. Qe6+ Kg7 40. Qxc8

I finally looked at the SF solution of mate-in-12 and I admit 32. Rb6 would never have occurred to me, but I'm not sure it's better than my solutions.

May-23-18
Premium Chessgames Member
  Jimfromprovidence: After 31 Bf3 Be7 here is the official answer.

mate-in-12 (27 ply) 32.Rb6! (threatening 33 Rxe7+) Qa1+ 33.Kh2 Qe1 34.Bg4 Bd3 35.Bxe6 (threatening 36 Bf7#)


click for larger view

The rest is 35...Qxf2+ 36.Qxf2 Kxh6 37.Bxc8+ Bg6 38.Qf4+ Kg7 39.Rb7 Kg8 40.Rxe7 h6 41.Be6+ Bf7 42.Re8+ Kg7 43.Qxf7#

May-23-18  cormier: Analysis by Houdini 4
14...b5 15.Bf1 a4 16.Bg5 Bxg5 17.hxg5 b4 18.Bxa6 Rxa6 19.Qe2 Ra5 20.a3 bxc3 21.bxc3 Rb8 22.Nbd2 Rab5 23.Kg2 Qa5 24.Qe3 Rb2 25.Rh1 Ne7 26.Rab1 Nf5 27.Qd3 c4 = / + (-0.47) Depth: 22 dpa
May-23-18  cormier: Analysis by Houdini 4: d 25 dpa

1. + / = (0.59): 26...Qa3 27.Rb7 Qxe3 28.fxe3 Bd8 29.Bh6 Bd3 30.Bf3 Bf5 31.Bh5 Bg6 32.g4 Bh4 33.Kh2 Ra8 34.Kg2 Be1 35.Kf3 Bc3 36.Kf4 Bd2 37.Bxg6 hxg6 38.Rc7 Rb8 39.Ra7 Rc8 40.Rd7 Rb8 41.Re7 Ra8 42.Rb7 Rc8 43.Rd7 Rb8

2. + / - (0.79): 26...Qa2 27.Rb7 Re8 28.Bh6 Qa6 29.Rb1 Qa2 30.Qe1 Bd3 31.Rb7 Qa8 32.Rb3 Bc2 33.Rb2 Bf5 34.Kh2 Rc8 35.Bf1 Be4 36.Qd1 Qa7 37.Be2 Bg6 38.Qd2 Be4 39.f3 Bf5 40.Bf1 Bd8 41.Ra2 Qxa2 42.Qxa2

May-23-18  Junbalansag: Chrisowen, can you use English when commenting. What language are you using?
May-23-18
Premium Chessgames Member
  Penguincw: No one said you have to solve POTD first thing in the morning (or day).

And well, no luck here.

May-23-18  leRevenant: <ChessHigherCat:> "tritto" lol
May-23-18
Premium Chessgames Member
  landshark: <gofer> I liked your line 31.Be4+ and it got complicated but in the end I believed (and still do) that it wins. Here's one I worked out: 31. Be4+ dxe4 32. Qxe4+ Kh5 33. g4+ Kh4 34. Rxh7 Qa1+ 35. Kh2 Rh8 36. g5+ Kh5 37. Qf3+ Kg6 38. Qxf6+ Kxh7 39. Qg7# . Much too complicated for Wednesday. All along I felt I was missing something easier.
May-23-18  Pchief: 26...Kxg7 should not have been played. Enemy pawn in front of the king serves as a good shield.
May-23-18
Premium Chessgames Member
  Breunor: I'm in the Be4 club.
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