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Tatiana Yuryevna Stepovaia-Dianchenko vs Nadezhda Kosintseva
Russian Championship Superfinal (Women) (2009), Moscow RUS, rd 2, Dec-21
Sicilian Defense: Richter-Rauzer. Neo-Modern Variation (B67)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
Mar-13-19  ChessHigherCat: Tweazy for a Wednesday:

37...Rxc1+ 38. Kxc1 Qxb3 and white can't prevent Ra1

Mar-13-19  Cheapo by the Dozen: Black would quickly crush White if it weren't for the knight. The most direct means for dealing with the knight turns out to work:

37 ... Rxc1+ (recapture is forced)

38 Kxc1 Qxb3 (White is suddenly low on flight squares)

39 Rb2 Ra1+

and White drops at least a rook.

39 Rd1 is similarly bad.

Mar-13-19  ChessHigherCat: Nadezhda said: I'll step ovah ya dyin', Chenko!
Mar-13-19
Premium Chessgames Member
  Penguincw: 2 easy puzzles to start the week, but this one wasn't easy enough for me.
Mar-13-19
Premium Chessgames Member
  drollere: if 39. Rc2 Ra1+ 40. Kd2 Qb4+ 41. Ke3 Re1
Mar-13-19  stacase: Easier than it looked at first glance.

After 38...Qxb3 White can't prevent 39...Ra1+ Uh well he can 39.Ra2 but well tipping his is a better choice(-:

Mar-13-19
Premium Chessgames Member
  al wazir: White could have put up more of a fight with 39. Qg4+ Kf8/Kh8 40. Rd5:

40...Qxc4+ 41. Kd2 Ra2+ 42. Ke3 Ra3+ 43. Kd2 (43. Kf2 Ra2+ 44. Ke1 Rc1+ 45. Rd1/Qd1 Qe3+ 46. Kf1 Qf2#) Ra2+ 44. Ke3 Qc3+ 45. Rd3 Qe1+ 46. Qe2 (46. Qf3 Rf2#) Qxe2#.

But the outcome is the same.

Mar-13-19  newzild: My main lines:

37...Rxc1+
38. Kxc1 Qxb3
39. Rc2 Ra1+
40. Kd2 Qb4+

and now:

a) 41. Ke3 Re1 wins queen for rook
b) 41. Kd3 Ra3+ 42. Rc3 Qxc3#

Mar-13-19  Stale.Mate: 39. Qg4+ followed by 40. Kxd2 surely would’ve been better. Sometimes you have to counter-punch.
Mar-13-19
Premium Chessgames Member
  patzer2: Sharp, double edged play in this Sicilian game by Black, culminating in the crushing final blow 37...Rxc1+ 38. Kxc1 Qxb3 -+ solving today's Wednesday puzzle.

According to Stockfish 10, White could have improved and maintained a slight advantage with 13. f5! ⩲ (+0.46 @ 27 ply).

Mar-13-19
Premium Chessgames Member
  agb2002: Black has a rook for a knight and a pawn.

The knight controls the entry points a2 and b3. This suggests 37... Rxc1+ 38.Kxc1 Qxb3:

A) 39.Rb2 Ra1+ wins the rook at least.

B) 39.Rc2 Ra1+ 40.Kd2 Qb4+

B.1) 41.Kd3 Ra3+ 42.Rc3 Qxc3#.

B.2) 41.Ke3 Re1 wins.

B.3) 41.Rc3 Ra2+ wins.

C) 39.Rd3 Ra1+ 40.Kd2 Ra2+ 41.Kc1 (41.Ke1(3) Rxe2+ wins) 41... Qxc4+ wins.

D) 39.Rd5(xd6) Ra1+ 40.Kd2 Ra2+ wins.

E) 39.Qg4+ Kf8

E.1) 40.Rb2 Ra1+ as in A.

E.2) 40.Rc2 Qe3+

E.2.a) 41.Kb1

E.2.b) 41.Kd1 Ra1+ 42.Rc1 Rxc1#.

E.2.c) 41.Kb2 Qa3+ 42.Kb1 Qa1#.

E.2.d) 41.Rd2 Ra1+ 42.Kc2 (42.Kb2 Qa3+ 43.Kc1 Rc1#) 42... Ra2+ wins.

E.3) 40.Rd5 Ra1+ 41.Kd2 Ra2+ 42.Ke1 (42.Kc1 Qc2#) 42... Qe3+ and mate next.

E.4) 40.Rxd6 Qa3+ wins the rook.

E.5) 40.Re2 Ra1+ 41.Kd2 Rd1#.

E.6) 40.Rf2 Ra1+ 41.Kd2 Ra2+ 42.Ke1 Qb1+ 43.Qd1 Qxd1+ 44.Kxd1 Rxf2 wins.

E.7) 40.Rg2 Ra1+ 41.Kd2 Ra2+ 42.Ke1 Rxg2 wins.

Mar-13-19  Walter Glattke: Getting the queen with 39.Rc2 Ra1+ 40.Kd2 Qb4+ 41.Ke3 Re1, in E) one can play 39.Qg4+ Kf8 41.Rc2 Ra1+ instead of Qe3+, 42.Kd2 Qb4+ 43.Ke3 Qe1+ 44.Kf3 Qf1+ (Qd1? Re2!) 45.Ke3 Ra3+ 46.Kd2 Qd3+ wins the rook.
Mar-13-19  saturn2: I saw 37...Rxc1+ 38. Kxc1 Qxb3 39. Rc2 Ra1+ 40. Kd2 Qb4+

41. Ke3 Re1
41. Kd3 Ra3+ 42. Rc3
41. Rc3 Ra2+

Mar-13-19  1stboard: Lovely finish for black
Mar-13-19
Premium Chessgames Member
  malt: Had 37...R:c1+ 38.K:c1 Q:b3 39.Rc2

(39.Qg4+ Kf8 40.Rc2 Qe3+ 41.Kb1 Qe1+
42.Rc1 Qb4+ 43.Kc2 Ra2+ wins )

39...Ra1+ 40.Kd2 Qb4+ 41.Ke3 Re1 42.Kf2 R:e2+

Mar-13-19  zb2cr: Found this one quickly.
Mar-13-19
Premium Chessgames Member
  HeMateMe: That was pretty obvious, cut off the escape routes.

I looked at Qxe4+ for a moment to see if there was a pretty Queen sac move going on.

Mar-13-19  Andrew Chapman: In Al Wazir' line: <White could have put up more of a fight with 39. Qg4+ Kf8/Kh8 40. Rd5:>

Ra2 wins quickly.

Mar-13-19
Premium Chessgames Member
  gawain: This one took me several minutes. It was pretty clear that 38...Rxc1+ must be the winning move but I did not see the follow-up 39...Qxb3 until I stopped looking for a check.
Mar-13-19  The Kings Domain: Good puzzle, pretty Nadia with quite a banger.
Mar-13-19
Premium Chessgames Member
  wood n tempo: I got this, but didn't analyze past Qxb3, because it looked so lost for white. However all the other posts, (esp. agb2002), make me realize I need to look a little further.
Mar-13-19  Momentum Man: "drollere: if 39. Rc2 Ra1+ 40. Kd2 Qb4+ 41. Ke3 Re1"

Thanks!

I got all the moves that ended the game, and saw 39.Rc2 Ra1+ 40.Kd2 Qb4+

But I didn't see as far as 41.Ke3 Re1.

41.Kd3 loses to 41....Ra3+

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