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Alena Kats vs Camilla Baginskaite
US Championship (Women) (2012), St Louis, MO USA, rd 3, May-10
Sicilian Defense: Najdorf Variation. Traditional Line (B98)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
May-21-12
Premium Chessgames Member
  diceman: <Shams:
Is 10.Nce2 an anti-Browne system? Also I can't remember the last time I saw White castle short in these lines. Can anyone shed a little theoretical light on this opening?>

After the win, Kats discussed the game,
she said she didnít study openings.

Iím guessing she just plays what she likes to play.

May-22-12  Cibator: Kats pajamas.
May-24-12  Gambit86: <mpl> If i could click "like" on your continuation after move 34 i would. Excellent
May-20-18
Premium Chessgames Member
  An Englishman: Good Evening: From 14/14 to a 4/7 week. Oh, well--welcome back, reality, nice to see you again.
May-20-18  Viennablue: I think black could avoid mate with 33...Rxf4 34. Rxg6+ fxg6 35. Qxg6+ Kh8 36. Qh6+ Kg8 37. Rg1+ Bg5 38. Qg6+ Kh8 and white has to draw by perpetual
May-20-18
Premium Chessgames Member
  agb2002: Black has a bishop and three pawns for a knight.

White threatens Rxg6+ and mate in four.

Black can add another defender with 33... b1=Q:

A) 34.Rxg6+ fxg6 35.Rg1 (35.Nxg6 Qxe1#) 35... Qxg1+ 36.Kxg1 gxh5 wins.

B) 34.Rxb1 Qxb1

B.1) 35.Rxb1 gxh5 wins.

B.2) 35.Qh6 Rd1 wins.

B.3) 35.Nxg6 Qxg6 36.Rxg6+ fxg6 37.Qxg6+ draw.

C) 34.Nxg6 Qg2+ (creates a momentary shortcircuit, 34... fxg6 35.Rg6+ and mate soon)

C.1) 35.Kxg2 Qxg6+ wins.

C.2) 35.Rxg2 Qxe1+ 36.Rg1 Qxg1+ 37.Kxg1 Bc5+ followed by Kg7 and Black seems to be able to fight on.

May-20-18
Premium Chessgames Member
  agb2002: I overlooked 36.Kh1 in my line C.1. Correct is 35... fxg6 followed by another shortcircuit move 36... Bg5.

Curiously, for a while I had the impression that 33... Bg5 was the key move but White wins with 34.Nxg6.

May-20-18
Premium Chessgames Member
  malt: I think that the key move is 33...b1/Q
May-20-18  catlover: <Viennablue> I tried to find a draw with 33...Rxf4.

Alas, it does not work: 33... Rxf4 34. Rxg6+ fxg6 35. Qxg6+ Kh8 36. Qh5+ Kg7 37. Rg1+ Rg4 38. Rxg4+ Bg5 39. Rxg5#

I did not see 34...Qg2+ at all.

May-20-18  catlover: Nice game. Anyone with a last name like Kats can't be all bad.
May-20-18  TeaChess: Very interesting game. Lots to calculate even after 34... Qg2+.
May-20-18  saturn2: Went for 33..Qa8 not by much and due calculation but at a guess.
May-20-18  schachfuchs: I would like to initiate a little poll: Did anybody found 34...Qg2+ (without engine of course)? I think this move is too "computerish"....
May-20-18  NBZ: Wow incredible.

I thought 33. ... Bg5 was the idea, but did not see <agb2002>'s 34. Nxg6!

May-20-18
Premium Chessgames Member
  Breunor: A very instructive game about fighting on in theoretically lost positions!

After 24 Re4 black is clearly winning according to Stockfish:

1) -4.92 (30 ply) 24...axb4 25.Nc1 Qd7 26.Ref4 Bg5 27.Qxh5 Bxf4 28.Rxf4 Qd5 29.Qe2 f6 30.exf6 e5 31.f7+ Rxf7 32.Rxf7 Qxf7 33.Nf3 Bxf3 34.gxf3 Rf8 35.Qe4 Qxf3+ 36.Qxf3 Rxf3 37.Kg2 Rf8 38.d4 exd4 39.Nd3 Rc8 40.Kg1 Rc3 41.Nxb4 d3

After 26 .. a x b4 black is sstill up 4.97!

1) -4.97 (30 ply) 27.Ree1 b3 28.Nxb5 b2 29.Qg4 Ra4 30.Nc3 Rxf4 31.Qxf4 Qb3 32.Qc4 Qxc4 33.dxc4 h3 34.Rf2 hxg2+ 35.Kg1 Bb4 36.Rxb2 Bxc3 37.Rxb7 Bxe1 38.Rb3 Rc8 39.Re3 Bb4 40.Re4 Bc3 41.Kxg2 Kh7 42.Kh3 g5 43.Kg2 Kg7 44.h4 gxh4 45.Kh2 Kf8 46.Rxh4

After 28 b2 it is black ahead 7.25!

1) -7.25 (30 ply) 29.Ne2 b1=Q 30.Rxb1 Qxe2 31.Nd4 Qxe5 32.Rxb5 Bxg2+ 33.Qxg2 Qxd4 34.Rbb1 Qd6 35.Qf3 g5 36.Qe2 Ra3 37.d4 Qd5+ 38.Qg2 Qxd4 39.Qf2 Qd5+ 40.Qg2 Qxg2+ 41.Kxg2 g4 42.Rf2 f5 43.Re2 Rf6 44.Rbe1 Kf7 45.Re3 f4 46.Rxa3 Bxa3 47.Rh1 Bd6 48.Kf1

After 30 d4, black is ahead more than 8:

1) -8.20 (30 ply) 30...Rb4 31.Nh5 g6 32.Rb1 Rc8 33.Qf4 gxh5 34.Kg1 Qd5 35.Ne1 Rf8 36.Qf2 Rxd4 37.Rxb2 Rg4 38.Rd2 Qxe5 39.Qe2 Qxe2 40.Rxe2 Bd5 41.Rb2 h3 42.Kh1 hxg2+ 43.Nxg2 Rc8 44.Rd1 Be4 45.Re1 Bc5 46.Rxe4 Rxe4 47.Rxb5

But I think defending against the white attack isn't obvious for a human, so white fighting on was terrific!

Black is still up over 6 after 31 Bxf3 but the win is thrown away with Rxd4, Stockfish says Rd8 keeps the win.

1) -6.03 (31 ply) 31...Rd8 32.Nh5 g6 33.Qf4 Kf8 34.Qh6+ Ke8 35.Ng7+ Kd7 36.Qf4 Rf8 37.Qg4 Rb4 38.Rb1 Qd5 39.Qg2 Rh8 40.h3 Bf8 41.Nxe6 Kxe6 42.Rxb2 Rxb2 43.Qxb2 Bg7 44.Qb1 Qxd4 45.Qxb5 Bxe5 46.Qe2 Kf6 47.f4 Qd5+ 48.Kh2 Bd4 49.Qg2 Qxg2+ 50.Kxg2 Kf5 51.Rd1 Be3 52.Kf3 Bxf4 53.Ra1 Rc8

After Rx d4 Stockfish rates as dead even:
1) =0.00 (44 ply) 32.Rg1 g6 33.Qh5 b1=Q 34.Nxg6 Qg2+ 35.Kxg2 fxg6 36.Kh1 Bg5 37.Rxb1 gxh5 38.Rxg5+ Kh7 39.Rbg1 Kh6 40.Rg6+ Kh7 41.Rxe6 Rxf3 42.Re7+ Kh6 43.Re6+ Kh7

but white is lost without the extraordinary 34 Qg2!!

May-20-18  Viennablue: @catlover: you are right - i missed 36. Qh5+ , blocking the diagonal...
May-20-18  sombreronegro: So easy , once you realize the G1 rook is the corner stone of the position that is. So easy in hindsight as always. Its the old over loaded piece gag. It can check the king, but it cannot leave the back rank for any old piece. It defends the rook on e1 and its the primary threat on the G file. Q to G2+ forces the king capture and unpins the back G pawn to attack the white queen , which is defended by the black queen.

and that equalizes...fascinating.

May-20-18  Patriot: <agb2002> <I overlooked 36.Kh1 in my line C.1.> Personally I think you did an outstanding job. This problem was VERY tricky and you found Qg2+ for one!
May-20-18  cormier: Analysis by Houdini 4: d 23 dpa

1. = (-0.10): 17.h3 Kh8 18.a3 h6 19.Bh4 Bd8 20.Kh2 Rxc1 21.Rxc1 Rc8 22.Rxc8 Qxc8 23.Qf2 Kh7 24.g4 Qc7 25.Kg2 Kg8 26.Qe1 Qc8 27.Qc1 Qxc1 28.Nxc1 Kf8 29.Bf2 Ke7 30.Kf3

2. = (-0.16): 17.a3 Rxc1 18.Rxc1 a5 19.Nc3 axb4 20.axb4 Rc8 21.Nce2 Rxc1+ 22.Nxc1 Bc8 23.Nce2 Qe8 24.Bh4 Bd7 25.Qe1 e5 26.Nf3 exf4 27.Nxf4 h6 28.Bf2 Qc8 29.Nd4 Ng4 30.Nd5 Bg5 31.h3 Ne5

May-20-18  cormier: Analysis by Houdini 4: d 20 dpa

1. -+ (-2.50): 21...axb4 22.Ref1 Rf8 23.Nc1 Bd5 24.h3 Bxa2 25.Nxa2 Rxa2 26.h4 Qd5 27.Qf3 Qxf3 28.R1xf3 Ra1+ 29.Kh2 Rc1 30.Kh3 Rc5 31.Re4 Rd8 32.Ref4 g5 33.hxg5 Bxg5 34.Re4 h6 35.Nb3 Rcd5 36.d4 Kg7 37.Kg4 Ra8

May-20-18  cormier: Analysis by Houdini 4: d 22 dpa done

1. - + (-7.07): 30...Rd8 31.Rd1 Rb4 32.Nh5 g6 33.Rb1 Rc4 34.Qf4 gxh5 35.Nd2 Rf8 36.Nxc4 bxc4 37.Qd2 h3 38.Kg1 hxg2 39.Rfe1 Bh4 40.Rxb2 c3 41.Qxc3 Bxe1 42.Qc1 Bd2 43.Rxd2 Qd5 44.Qe1 Ra8 45.Rd3 Ra2 46.Rg3+ Kf8 47.Qc3 Qc6 48.Qb4+ Ke8 49.Qe1 Qd5 50.Qd1 Kf8 51.Re3 Kg7 52.Re1 Qc4 53.Re3 Qc2 54.Qe1 Bd5 55.Rg3+ Kh7 56.Rc3 Qb2

2. - + (-6.88): 30...Rc8 31.Nh5 g6 32.Nf4 Be4 33.Nxh4 Bxh4 34.Qxh4 Rxd4 35.Qf2 b1Q 36.Qxd4 Bxg2+ 37.Nxg2 Qbb2 38.Qg4 Qd5 39.Rd1 Qdxe5 40.Rfe1 Qc5 41.Rb1 Qd2 42.Rf1 Qdd5 43.Rbd1 Qb7 44.Rd3 b4 45.Qd1 f5 46.Rd6 Qe5 47.Rd7 Rc7 48.Rxc7 Qexc7 49.Qb3 Qe5 50.Rd1

May-20-18  cormier: Analysis by Houdini 4

31...Rd8 32.Nh5 g6 33.Qf4 Kf8 34.Qh6+ Ke8 35.Ng7+ Kd7 36.Qf4 Rf8 37.Rb1 h3 38.Qe4 Qd5 39.Qxd5+ exd5 40.Rxb2 Rg8 41.Rxb5 Rxg7 42.Rd1 Rg8 43.Kg1 Rc8 44.Rb2 Rac4 45.Rb7+ Ke6 46.f4 Rc2 47.Ra1 Bh4 48.Rd1 Rg2+ 49.Kh1 Rcc2 -+ (-4.79) Depth: 23 dpa

May-20-18  RKnight: <agb2002> On your line: C.2) 35.Rxg2 Qxe1+ 36.Rg1 Qxg1+ 37.Kxg1 Bc5+, the last move is not check, so I see only 37...fxg6 and a perpetual.
May-21-18
Premium Chessgames Member
  agb2002: <Patriot> Thank you!

<RKnight> You're right, thank you. It's very easy to mess things up when dealing with crazy or problem-like moves.

May-21-18  njchess: I was disheartened to see that Black did not find 34. ... ♕g2+!! but that is a really difficult move to see. I did find it, but I suspect that the 20+ minutes it took me would not have been available on the 34th move!
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