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Fiona Steil-Antoni vs Alexandra Kosteniuk
"Why, Fi?" (game of the day Mar-29-2020)
European Club Cup (Women) (2009), Ohrid MKD, rd 2, Oct-05
Formation: King's Indian Attack (A07)  ·  0-1

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Nov-06-17  Saniyat24: A blockbuster game...!
Mar-29-20  sfm: White was fine or better most of the time, but 39.exf6??,a4 and the black pawns can't be stopped. 39.Bf2 was about equal, according to SF
Mar-29-20  goodevans: I'd like to elaborate a little on what <sfm> has posted.

Here's the position after <38.Bh4>.


click for larger view

White's idea is to route the B to e7 to stop the a-pawn from getting to a3.

It's worth noting that only the B can stop the pawn without loss of material. If white tries to stop it with <Nc5> then black will play <Rd8> and then stopping the d-pawn will cost white his B.

White would have been better off playing 38.Bf2 (headed for c5) immediately. The manoeuvre Bg3-h4-e7 is not only blocked by <38...f6> but this move also intends an exchange on e5 that improves the position for black, e.g. <39.Bf2 fxe5 40.fxe5 Rf8+>.

Quite why white didn't realise she needed to reroute the B with <39.Bf2> is a bit of a mystery. Maybe time trouble was a factor. Her idea of pushing the c-pawn can at most win black's R whilst nothing can stop black's a-pawn.

Mar-29-20  Brenin: Taken together, today's game and puzzle are very instructive, showing two different fates for the KIA. Note here how Black places her N on f5 (first one, then the other) to guard g7, and only castles K-side when safety there is assured.
Mar-29-20  goodevans: <...and then stopping the d-pawn will cost white his B.>

"her B".

Oops!

Mar-29-20  RandomVisitor: After 33.Be1 there is 33...Qxg2!


click for larger view

Stockfish_20032617_x64_modern:

<36/73 00:59 -3.38 33...Qxg2+ 34.Qxg2 Bxe1> 35.Kg1 Nh4 36.Nf6+ Kh8 37.Qe4 gxf6 38.Qxd3 Bg3 39.c5 Bxf4 40.Qd1 Kg7 41.exf6+ Kh6 42.Kf1 Nf5 43.Qa4 Kg5 44.c6 Rb1+ 45.Kg2 Rb2+ 46.Kf3 Be5 47.c4 Kxf6 48.Qxa6 Rb3+ 49.Ke2 Nd4+ 50.Kf2 Rc3 51.Qb6 Rc2+ 52.Kf1 Rxc4

Mar-29-20  Ironmanth: Wonderful game! Thanks chessgames; hope and pray all have a good week. Please stay safe, play lots of chess, and keep believing. #weaareallone
Mar-29-20  goodevans: <RandomVisitor: After 33.Be1 there is 33...Qxg2!>

The point being that if black gives up her Q for R+B white will soon have to give up her N to stop the d-pawn.

In the SF analysis that <RandomVisitor> provides this happens with the slightly odd-looking <36.Nf6+>, making way for <37.Qe4> and <38.Qxd3>.

But there are other ways this might happen, e.g. after 33...Qxg2+ 34.Qxg2 Bxe1 35.Kg1 Nh4 white could try <36.Qf1> but then <36...Rd8> (not 36...d2? 37.Qd3) ensures the N is doomed.

The whole thing is very complicated though. It's not obvious to me why 35.Kg1 is white's best option and how many other viable options black would need to have considered before taking this line.

Mar-29-20  botvinnik64: By 14...d4 Black already looks better. This is the Chess Queen at her best!
Mar-29-20
Premium Chessgames Member
  OhioChessFan: Nice pun, great game.
Mar-29-20  RandomVisitor: AFter 10.Qe1 black perhaps has a small opening advantage:


click for larger view

Stockfish_20032617_x64_modern:

<54/84 9:51:10 -0.82 10...Nc6 11.Qf2 Be7> 12.a3 Rc8 13.Ne2 a5 14.Bd2 g6 15.h3 Qc7 16.Rfe1 a4 17.Reb1 d4 18.b3 axb3 19.Rxb3 Na7 20.Rab1 Qd7 21.R3b2 Kf8 22.Ng5 Bxg2 23.Qxg2 Bxg5 24.fxg5 Kg7 25.Qf3 Qc7 26.c3 Qc6 27.Qf2 dxc3 28.Bxc3 Rhd8 29.Rd2 Qb7

Mar-30-20  RandomVisitor: <goodevans>After 33...Qxg2 34.Qxg2 Bxe1

Yes, white might have to give up the knight for the advanced black d-pawn, so it would effectively be a queen vs rook and two minor piece ending, black would have enough big guns to hold his own vs the queen.

<The whole thing is very complicated though. It's not obvious to me why 35.Kg1 is white's best option>

The above computer run was about a minute and I should have let it run longer. For example:


click for larger view

Stockfish_20032617_x64_modern:

<53/101 3:53:40 -4.38 35.Kg1 Ng3 36.f5 Rd8 37.f6 d2 38.Nxd2 Rxd2> 39.Qa8+ Kh7 40.Qb7 Bf2+ 41.Kg2 Kg6 42.c5 gxf6 43.c6 Kg5 44.Kf3 Nf5 45.exf6 Bg3 46.Qxa6 Rf2+ 47.Ke4 Kxf6 48.Qa1 Rf4+ 49.Kd3 Rf3+ 50.Ke2 Re3+ 51.Kd2 Bf4 52.Kd1 Rd3+ 53.Ke2 Rxh3 54.Qa5 Kg7

53/94 3:53:40 -7.99 35.Qa2 Kh7 36.h4 Rd8 37.Qa5 Rd4 38.Ng5+ Kg6 39.Qc7 Nh6 40.Qb7 Rxf4 41.Nh3 Ng4+ 42.Kg1 Rxc4 43.Ng5 Nxe5 44.Nxf7 Nxf7 45.h5+ Kf6 46.Qf3+ Ke7 47.Qxd3 Nd6 48.Kf1 Bxc3 49.Ke2 a5 50.h6 gxh6 51.Qh7+ Nf7 52.Kd3 Rc5 53.Qe4 h5 54.Qb7+ Kf6

53/95 3:53:40 -9.18 35.c5 d2 36.Nxd2 Rb2 37.Qa8+ Kh7 38.c6 Bxd2 39.Kg2 Be1+ 40.Kf3 Rf2+ 41.Ke4 Re2+ 42.Kd3 Re3+ 43.Kc2 Bxc3 44.Kb3 Bxe5+ 45.Ka2 Re2+ 46.Kb3 Rb2+ 47.Ka4 Bxf4 48.Qf8 Kg6 49.h4 Ra2+ 50.Kb3 Rd2 51.h5+ Kf6 52.Qa8 Nd4+ 53.Kc3 Nb5+ 54.Kb3 Nc7

Mar-31-20  Damenlaeuferbauer: I think, Sasha Kosteniuk had the initiative from the opening until the end of the game. When we evaluate such games, we should not forget, that this was a game between two human beings and NOT between two computers.

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