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Susan Polgar vs Elena-Luminita Cosma
Moscow Olympiad (Women) (1994), Moscow RUS, rd 11, Dec-12
English Opening: Agincourt Defense. King's Knight (A13)  ·  1-0



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Kibitzer's Corner
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Premium Chessgames Member
  Sneaky: Yes Qh4 is the critical move to see here. So simple, and yet I had to think for a minute since it's not a sacrifice like most of these are.
Feb-02-05  CHEG: <MindlessOne> I believe you mean 32 Qh6 and mate soon follows. Good post, missed this move in my own analysis.

One Winning Line:
28 ... Rxd8 29 Rxd8+ Kg7 30 Qf4 f5 31 gxf6+ Kf7 32 Qh6 ... 33 Qg7#

Feb-02-05  MindlessOne: Thank you <CHEG> I did mean Qh6, typo I guess. We have not yet analysed possibilties if RxR was not played, and in order to be 100% accurate we must include variations that could arise out of this alternative. Here are some of my ideas. 28...Kg7 29.Qh4 h5 30.gxh5 e.p.+ Kh7 31.Qf6 now RxR 32.RxR there is no defense for the inevitable mate at h8, due to the fact that there are both the threats of Qh8 and Rh8. This particular example doesnt seem to hold an escape for black, but there may be some that we miss due to our jumping to conclusions. Again, add any interesting variations.
Feb-02-05  DWINS: <MindlessOne>,
In the 30.Qf4 line, 31.exf6+ works just fine.
31...Kf7 32.Qd6! and Black can't stop mate.
Feb-02-05  Dudley: Ultra: No, I beat you by 10 seconds just like I did last night! Seriously, don't bother making claims unless you can provide explanation that indicates you understand the problem. Or would that reduce your keyboarding speed?
Feb-02-05  MindlessOne: <DWINS> Interesting, thank you, overlooked the Qd6 possibility. I would like to make the point that All the variations we have found have ended on move 33. May be irrelevant but I find it interesting. Anyway, 27.hxg5 g6 is interesting as well, g6 is trying to relieve blacks weak back rank. I was wondering if there was any mortal threat here or if g6 was just an error. if black didnt move at all, then at 28.Rd8+ RxR 29.RxR# Backtracking some more to try and determine the root of this backranking plan we arrive at 26.Bg5 Bxg5. Bg5 played right into whites hands. Black relinquished his control over the d8 square, not the best idea due to the weak back rank! so what if 26.Re8 27.BxB! where 27...Rxe7 would lose to 28.Rd8+ Re8 29.RxR# (I realize that there are more ways to protect the black bishop and it would be interesting to see some posts from others on these alternatives)(running short on time) Last backtracking move id like to make a short point about is 25.Rd7 R6c7 Id like others to see the absolute control that Polgar has in this game. R6c7 like BXB makes it very difficult to protect his backrank square d8!!! can anyone also include a few variations out of 27...h6. Good nite all.
Feb-02-05  euripides: This looks like a nice way to deal with the Abrahams-Noteboom.
Feb-02-05  pawntificator: i was surprised at first to see Polgar give up control of the long diagonal with the light squared bishop on move 24 Bxc6. Until I thought about it a little more and realized that the bishop was not exerting influence on anything on the queenside, and the only purpose it would serve would be to protect the King. The king not being in any danger, I think it was a good move after all. A little counterintuitive to general principles though.
Feb-02-05  MindlessOne: 24.Bxc6 was indeed odd, but when you focus on the backrank, its truth is told. I do believe that Polgar has the fantasy position at 28, in mind, and due to this calculation, Bxc6 was born
Feb-02-05  euripides: The other two games in this line in the database have 9..c5, and were drawn. The tactical justification for this is 10 Nxb5 Qa5+ 11 Nc3 cxd4 when the white king's knight is pinned. After Polgar gets in 10 Ne5 White always looks better, though perhaps Black should avoid 10...Nxe5 and prepare c5 more slowly instead. I wonder if White can risk 9 Ne5.
Feb-02-05  JohnBoy: <pawntificator, Mindless> - I don't think that 24.Bxc6 is so wierd. It gets rid of perhaps the most active of blacks pieces and asserts domination of the d file. Not just for back-rank threats, but for long-term ending advantages. Blacks c pawn is a major liability as long while blockaded.

Perhaps black can get some relief from 27...Rxd7 28.Rxd7 Rd8 29.Rxd8 Qxd8 30.Qxc5 a5 (or maybe even ...g6). It is doubtful that white can win either the Q+P or most K+P endings arising here, due to the two sets of doubled pawns.

ASecondly, <Mindless> - your analysis is very good, but I might add that in your line <28...Kg7 29.Qh4 h5 30.gxh6 e.p.+ Kh7 31.Qf6 now RxR 32.RxR> white should probalby just play 32.Qg7#.

Finally, congrats <Ultra>! You did very well. Now run along.

Feb-02-05  euripides: <John> Interesting.

After 27...Rxd7 28 Rxd7 Rd8 White has 29 Qxc5 Qxc5 30 Rxd8+ Qf8 31 Rxf8+ Kxf8 32 a5. This advance of the a pawn allows White to create zugzwangs later on e.g. 32...Kf7 33 f4 Ke7 34 Kf2 Kd7 35 Ke3 Kc6 36 Kd4 Kb5 37 e3 and after 37...Kxa4 38 Kc5 (or 37...Kc6 38 Kc4) Black will eventually run out of moves on the king side, I think e.g. 38...h6 39 gh gh 40 g4.

I think that 24 Bxc6 my be a case of cashing in a positional advantage for a precise tactical solution. Judging when to do this is one of the hardest things in chess, though easier if there's a clear win involved.

Feb-02-05  MindlessOne: <Johnboy>
Thank you for that line, yes, it appears once the king is at g7 the rook becomes ALMOST obsolete. I missed that line in my analysis but the same general principles apply. As for Bxc6, your right, it isnt that weird, not only is the knight perhaps blacks most active piece, the capture of this piece gains some tempo with Rd7 threatening the bishop and setting up this beautiful set of tactics by Polgar. We must remember that players of this strength have fantasy positions in their mind, and Im sure she got just what she was aiming for. Now continuing with my analysis. 26...Bf8, hmmm, im having a hard time with this one. Im pretty sure that 27.Bd8 is good. Skewering the black rook and Black Queen, may I be as bold to say that Bf8 was the correct move here, having looked at all the rest but it appears to be the strongest so far. For instance. 27...RxR BxQ 28.RxR+ doesnt seem too bad considering two rooks for a queen is a good deal in theory. Even 27...RxB 28.Rxd8 is inferior to the alternative. Anyone with additions please add them, getting harder to analyse. <JohnBoy> 27...Rxd7 28.RxR Rd8 29.Qxa6! threatening both the capture of the queen and mate after Rxd8, black must find some way to save his queen and protect his rook but the connecting diagonal is now closed off, excellent offer though, completely missed this possibility in my analysis.
Feb-02-05  euripides: <mindless> yes, 29 Qxa6 wins outright.
Feb-02-05  MindlessOne: <europides> You seem to have a skill in endgames, how would you deal with the Bf8 scenario? (hats off to you and your variation, found it quite impressive myself.
Feb-02-05  euripides: <Mindless> thanks ! after 26...Bf8 I think simply 27 Qf4 and I don't see a good defence for Black against Qxf7+ to be followed by Bf6 or Bh6. For instance 27...f6 27 ef g6 28 f7+ Kh8 29 Bf6+ Bg7 30 Rd8+ Rxd8 31 Rd8 mate loks nice.
Premium Chessgames Member
  kevin86: It was clear for me that white had to reach d8-less obvious was the trapping of black's king-the en passant capture plays a major role here.(pardon my French).

Maybe the e.p. could be a topic for a week of puzzles or GOTD.

Feb-02-05  MindlessOne: <kevin> yes, the goal is obvious, and the en passent is vital, lets here some of your ideas on this game.
Feb-02-05  xqdashi: 28...Kg7 29. Qh4 h5 30. gxh+ Kh7
31. Qf6 Kxh6 32. Qh4+ Kg7 33. Qh8#

or (slightly longer) 32. Qh8+ Kg5
33. Qh4+ Kf5 34. Qf4#.

28...Rxd8 29. Rxd8+ leads to the same

Feb-02-05  jperr75108: isnt this puzzle a tad bit easy for wendsday?
Feb-02-05  DevastatioN: Rxd8, Rxd8+, Kg7, Qh4, h5, gxh6+, kh7, but then u have Rh8 check actually, and after Kxh8, Qf6+ and no matter what it's Qg7 mate :)
Premium Chessgames Member
  kevin86: <MindlessOne> I especially enjoyed the way Mr. Polgar layed out the net to snare black's king-then forced the rook into her opponents vitals for the kill.
Premium Chessgames Member
  Willem Wallekers: <Mister> Polgar?? (or "Master"?)
Premium Chessgames Member
  kevin86: Oops-I meant Ms. Polgar,funny that was my intent-but I typoed anyway.
Mar-20-05  pawntificator: I think she signed up to the site in order to give you a good tongue lashing for that slip, <kevin>. Just kidding.
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