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Oswaldo Zambrana vs Irina Krush
American Continental 2nd (2003), Buenos Aires, rd 11, Aug-29
Russian Game: Classical Attack. Staunton Variation (C42)  ·  0-1


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Kibitzer's Corner
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Nov-18-12  ajile: Sometimes you just have to accept a challenge. White can simply take the knight at move 26 with advantage. Give the piece back and then continue to attack in the center and q-side.

26.fxe4 dxe4

click for larger view

Analysis by Rybka 3 32-bit :

1. ² (0.70): 2.bxc6 exd3 3.Qc3 b6 4.d5

click for larger view

Qd8 5.cxb6 axb6 6.Nb7 Qxd5 7.Rb5 Qe6 8.Re1 Qf6 9.Nxd3 f3 10.Qxf6 Bxf6 11.Ne5 Rxa4 12.gxf3 Bxe5 13.Rbxe5 Rxe5 14.Rxe5 Ra1+ 15.Kf2 Ra2 16.Re2 Bd3 17.c7

2. ² (0.70): 2.Qc3 exd3 3.bxc6 b6 4.d5 Qd8 5.cxb6 axb6 6.Nb7 Qxd5 7.Rb5 Qe6 8.Re1 Qf6 9.Nxd3 f3 10.Qxf6 Bxf6 11.Ne5 Rxa4 12.gxf3 Bxe5 13.Rbxe5 Rxe5 14.Rxe5 Ra1+ 15.Kf2 Ra2 16.Re2 Bd3 17.c7

Black bluffed she had something and won this bet.


Nov-18-12  morfishine: <YouRang> & <Ajile> Nice posts!
Premium Chessgames Member
  chrisowen: Binding in bitter seems the first instinct gives, it dog in dig

knightg3 now that pawn is stacked 27.hxg3 fxg3 I think again white

alive, to the threats posed along back rank a good move might be

ne2, go fit entrance in g3 it dominate again jodhpurs e2 at bete

noire I g3 say a prayer e7 to cover a looking for the lady killer

key e3 sign off instead f5 trade d3 navigates 29.Qxd3 Be3+ the path

bestowed in kingh1 very likely black have in awesome win chest queen

it rifle in f5 lankie no foolings 28...bxd3 29.Qxd3 Be3+ babe

there's no going back re mind,

30.kh1 nh5 31.ng1 qe7 32.nh3 nf4 33.qc2 qh4

click for larger view

In exactly it hook queen in cane the knight bang to rights neck

knight lace in beautiful 28.f4? Sire us hoof in gee find this one

idea coin find a toughie now black has carcus to pick on in a:

28...Qxf4 or Rxe1 castle main priority queen knight out of the

picture in g3 fee the chickend in bind egg in rigger find your way

out of that in before white consolidate been got in engage the

knightg7 in scarfe gate loiter in grind old sacs abound, aim cinch

in after f4 pitching black to foot circle on a sixpence churlish in

effect smack in gg!

Premium Chessgames Member
  numbersguy70: Yeah, I think Krush considered, but didn't expect, the gift of 28.f4. 28.Bd2 wouldn't stop the check on e3 with Qe7-h4 looming.

The real insane depth of the position, to me (and Fritz, of course), seems to be how quickly the knight on g7 can aid the Qe7-h4 attack via h5-f4 after the exchange of LSBs. Even Ne2-g1-h3 (with g1 vacated after the e3 check) is no useful defense.

Nov-18-12  Cemoblanca: Nice Crash Krush! ;)
Nov-18-12  Marmot PFL: The 26...Ng3 sacrifice is rather common in these kind of positions (bp on f4, wp on f3) but can be very hard to calculate accurately. The plan to get a pawn on g3, followed by the Q to f4 and h4 is very tempting, especially as the knight is attacked on e4 anyway. if 27 hg3 fg3 28 f4 Rxe1 29 Rxe1 Qxf4 or 28 Bd2 Qd8 29 f4 Bh6 so the tactics seem to be working for black.

I played a very similar sacrifice once after thinking for almost 50 minutes (much too long. My opponent thought for about 30 seconds and declined it, just giving me the exchange. Unfortunately I lost the game in time trouble.

Nov-18-12  scormus: Now I now why the Sunday puzzles are labelled "insane". You have to be to try them.

I didn't see the sequence, in fact I didnt even see Ng3 ..... OK, I didnt choose it.

I think it's an example of what Simon Webb meant, play actively and play moves that threaten. It might not be sound against the best defense, but its your opponent's task find that defense, not yours. All OTB of course ....

BTW, Rybka 4 had to calculate 2 mins and search > 4 Mnodes and get to d=15 before she "found" 26 .... Ng3. And then needed another 3 mins to get a positive eval. QED

Nov-18-12  Moszkowski012273: 25...Ne4 should of (with proper play) lost this game for Irina.
Nov-18-12  lost in space: pffff, too much for my small brain
Nov-18-12  bachbeet: Not sure there is enough of an advantage after black's 35th move for white to have resigned. Black's knight is forking the king and rook but after the knight takes the rook, it gets taken and white has the material advantage.
Nov-18-12  Moszkowski012273: 28...Qxf4 was pretty crushing. Annnnd at the end I believe white could of easily held onto a draw with 35.Qd1 instead of going ballistic with Ke2
Nov-18-12  Marmot PFL: <Not sure there is enough of an advantage after black's 35th move for white to have resigned. Black's knight is forking the king and rook but after the knight takes the rook, it gets taken and white has the material advantage.>

But black has a Krushing attack.

Nov-18-12  ajile: <morfishine: <YouRang> & <Ajile> Nice posts! >

Thanks. This really was a good gamble for White given her expertise with tactics. The maze of combinations would be very difficult to calculate with a time limit.

Premium Chessgames Member
  sfm: <Once: This is one of those positions where you (well, certainly me) are left wondering just how much of this Irina saw when she played 26... Ng3.>

Yes, but as a great player says: "You don't really have to see anything - you just have to play the right move!"

And probably this was what Krushiebabe did here, pr. female intuition.


BTW, what a terrible picture has of her, technically too. I don't think I know one single female that don't care about what picture is used and that should be respected!

Here is a better one:

A worse is hard to find:

Nov-18-12  waustad: I got in around 4 ply before it took off in another direction than my expected defense.
Nov-18-12  rilkefan: Got the first few moves, though I hadn't expected to be playing ...Rxe1 after f4. And I might have even found all of black's moves OTB. But there's no way I would have seen this as a puzzle solution with worked-out variations.
Nov-18-12  TheBish: O Zambrana vs I Krush, 2003

Black to play (26...?) "Insane"

26...Ng3! looks like a very strong attacking move. The idea is that after 27. hxg3 (more or less forced, since the Rf1 is attacked and 27. Rf2 Rxe1+ is not possible) fxg3, Black is threatening 28...Be3+ 29. Kh1 Qf4 and 30...Qh4#.

After 26...Ng3 27. hxg3 fxg3 28. Bd2 Qd8! with the idea of 29...Bxd2 30. Qxd2 Qh4 looks very strong.

That about all the time I have, time to see how it played out.

Nov-19-12  LIFE Master AJ: 26...Ng3! (Maybe - '!!')

Very nice, the combination is really top notch.

Nov-19-12  morfishine: <ajile> For a goof, I tried to show that White could improve with <27.Bd2>. This is rendered moot, much to my chagrin, by simply backing up one move and playing <26.fxe4> Talk about a bluff! :)
Nov-19-12  James D Flynn: I didn't get a chance to finish my analysis and post yesterday but here is as far as I got: Material is equal, White has more space on the Q-side where Black has more space and a preponderance of pieces on the K-side. 26….Ng3 27.bxc6(hxg3 fxg3 28.Bd2(to avoid the threat of 28…Rxe1 29.Rxe1 Qxa5 and simultaneously prevent the manoeuvre Qf4 and Qh4)Be3+30.Bxe3 Rxe3 31.Bxf5 Nxf5 32.Ncb3 Qf4 33.Rfe1 Qh4 34.Re5 Qh2+ 35. Kf1 Ne3+ 36.Rxe3 Rxe3 and there is no answer to the threat of Qh1#) b6 28.cxb6 axb6 29.Nab3 Nxf1 30.Kxf1 Rxa4
Nov-19-12  Anatoly21: I was able to find 26...Ng3!!?, which looks not quite decisive, but definitely creating enough complications for a win (a computer may refute that). A number of posters noted that 28.Bd2 was more tenacious, a move I had not considered (while I was analyzing, 28.Ne2 looked promising, controlling f4 and slowing the attack down the e-file, but it appears that 28.Bd2 is better). Good catch.

The move I found truly brilliant, was 32...Bxc1! I totally missed this idea (32...Nxf5 looked sufficient to me), and the move sends Black's position from "looks like it should be winning" to "0-1". Really quite clever, I must say.

Nov-20-12  sushijunkie: <Once> - That was kinda genius. You can be my wingman anytime.
Nov-20-12  Cemoblanca: <sushijunkie: <Once> - That was kinda genius. You can be my wingman anytime.>

Indeed! Great post Lt. Kazanski! :D

Premium Chessgames Member
  whiteshark: Irina mentioned this game as her favourite one here:
Feb-26-19  FairyPromotion: Good Knight Irina
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