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The Chessgames.com Challenge
The World vs Natalia Pogonina
C U R R E N T   P O S I T I O N

Hardinge Simpole Publishing

  
   Chessgames Challenge
Can a group of chess amateurs team up to beat a grandmaster?  Find out in the Chessgames Challenge!  You can vote for the move you think is best, and discuss the game with other members on this page.

[Help Page]

[Natalia Pogonina]

[flip board] GAME OVER: 1/2-1/2 [flip board]

MOVES:
1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.g3 Bb4+ 5.Bd2 Be7 6.Bg2 c6 7.O-O O-O 8.Qc2 b6 9.Rd1 Nbd7 10.Bf4 Ba6 11.Nbd2 Rc8 12.Rac1 Nh5 13.Be3 Nhf6 14.Bg5 h6 15.Bxf6 Bxf6 16.b4 Bb7 17.Qb3 Ba8 18.c5 a5 19.a3 Rb8 20.Qc2 Bb7 21.e4 Qc7 22.Nf1 dxe4 23.Qxe4 Rfd8 24.Ne3 Ba6 25.Ng4 Bb5 26.Qc2 axb4 27.axb4 Be7 28.Ra1 h5 29.Ne3 Bf6 30.Ra3 bxc5 31.bxc5 Ra8 32.Rxa8 Rxa8 33.Bf1 Bxf1 34.Kxf1 e5 35.dxe5 Nxe5 36.Qe4 Nd7 37.Qf5 Ra7 38.Qxh5 g6 39.Qg4 Nxc5 40.h4 Ra4 41.Nc4 Qb7 42.Kg2 Qb3 43.Qc8+ Kg7 44.Nd6 Qxd1 45.Ne8+ Kf8 46.Nxf6+ Kg7 47.Ne8+ Kf8 48.Nf6+ Kg7 49.Ne8+ Kf8 50.Nc7+ Kg7 51.h5 Ra1 52.h6+ Kf6 53.Qh8+ Ke7 54.Qe8+ Kd6 55.Qd8+ Nd7 56.Ne8+ Kc5 57.Qe7+ Kb6 58.g4 Ra4 59.Qd8+ Ka6 60.Nf6 Rf4 61.Ne5 Rxf2 62.Kxf2 1/2-1/2
GAME OVER thank you for playingit is now 09:30:22
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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 900 OF 1068 ·  Later Kibitzing>
Dec-11-10  cormier: <cormier: <Dec-10-10 <<kb2ct>>: An outside passed pawn is often a winning advantage in simplified ending <and a bishop is usually superior to a knight. <In addition without black cooperation, <the only way white can create a passer is to exchange pawns <which allows black to sac a piece for the passer <axhieving a draw by insufficient material <as confirmed by tablebase. <I admit strong players often test other strong players on theory and almost always test weaker players, but this could easily become embarrassingly absurd. <I regard any positive evaluation as a computational artifact. <She probably could draw even if she dropped her c-pawm with 3 versus two all on one side of the board.>>>>>>>>>> imo <<RV>> we've got to destroy her passer pawn "c" ortherwise, we must keep it under chain-locks ... this is my first estimation only .... by, tks>
Dec-11-10
Premium Chessgames Member
  kb2ct:

It is a little difficult to understand the difference between Ra7 and Ra1. Ea1 exchanges rooks and Ra7 is designed to exchange queens. She could choose either.

:0)

Dec-11-10
Premium Chessgames Member
  morfishine: <OhioChessFan><When the team keeps voting against the active analysts, that's to be expected> You make a very succinct point. I was under the impression that the voting, at least lately, was for the best line per the AT. (I voted 36.Qf5)
Dec-11-10  Bootvis: If we continue with this level of interest we should go for a draw.
Dec-11-10
Premium Chessgames Member
  AylerKupp: I think that some of the apparent drop in interest is due to the extensive analysis performed and posted on 36.Qe4 and 36.Qf5. As long as she's playing moves from the lines that we've analyzed and posted there seems to be little need for additional commentary. I performed more and deeper analysis but it didn't show any new information so I didn't bother post it. There's enough stuff here already!

But I suspect that if she plays a move that's not part of our analysis you'll see the team jump out of its apparent lethargy.

Dec-11-10
Premium Chessgames Member
  morfishine: <Bootvis><If we continue with this level of interest we should go for a draw> I don't think its a "level of interest" issue. It appears the course of the game hinges solely on her response: <37...Ra1> and the game is a "dead draw" in my view. In the unlikely event we see <37...Ra7>, then we should play-on; I've been trying to fit-in <Rd2> to keep the rooks on, but can do no better than draw (so far); We're missing a tempo
Dec-11-10
Premium Chessgames Member
  WinKing: Looking at <37...Ra7>:

<37....Ra7 38.Qxh5 g6 39.Qg4 Nxc5 40.h4 Ra4 41.Nc4>


click for larger view

Rybka 3

[+0.08] d=24 41...Qb7 42.Kg2 Qb3 43.Nfd2 Qd3 44.Qc8 Kg7 45.Qxc6<(Diagram 1)> Rxc4 46.Nxc4 Qxc4 47.Rd6 Be7 48.Qd5 Qxd5 49.Rxd5 <(Diagram 2)>f5 50.h5 Kh6 51.hxg6 Kxg6 52.f4 Kf6 53.Kf3 Ke6 54.Re5 Kf6

Diagram 1


click for larger view

Diagram 2


click for larger view

[+0.15] d=23 41...Bg7 42.Kg2 Ne6 43.Qe4 Bf6 44.Re1 c5 45.Qd5 Qd8 46.Qc6 Rb4 47.Nce5 Bxe5 48.Nxe5 Qf6

[+0.19] d=23 41...Kg7 42.h5 Qe7 43.hxg6 Qe4 44.Qxe4 Nxe4 45.Nd6 fxg6 46.Nxe4 Rxe4 47.Rd7 Re7 48.Rxe7 Bxe7 49.Ne5 c5 50.Ke2 Kf6 51.f4 g5 52.Nc4 gxf4

[+0.20] d=23 41...Qb8 42.h5 Qb3 43.Qc8

Dec-11-10
Premium Chessgames Member
  AylerKupp: I recently bought a copy of “How to Use Computers to Improve Your Chess” by Christian Kongsted ($ 22.95 USD from Amazon) and I highly recommend it, particularly for chess engine beginners like me. It’s somewhat dated (2003, Fritz 8) but I think that many of the descriptions of computer chess engine strengths and weaknesses are still applicable, probably to a lesser degree as far as weaknesses. The chapter on Computer-Assisted Analysis is particularly valuable. The author, with a claimed ELO rating above 2200 and correspondence chess rating above 2500 is no chess beginner, and has an easy, readable style. Something to do while waiting for her next (predictable) move.

If anybody has recommendations for other books on these subjects, I would like to know.

Dec-11-10
Premium Chessgames Member
  cro777: <AylerKupp> Besides Konsted's there are two more books on the matter:

1)Robin Smith: Modern Chess Analysis, 2004 and
2)Byron Jacobs: Chess software User's Guide, 2003 (both at Amazon).

Dec-11-10
Premium Chessgames Member
  Chessgames Challenge:
37...Ra7


click for larger view



Dec-11-10  Waitaka: First time I see on a cg.com challange two moves on the same page...
Dec-11-10  karpkasp: 38. Qxh5 I suppose?
Dec-11-10  Waitaka: 38.Qxh5, btw.
Dec-11-10  karpkasp: or 38. Qh5 :)
Dec-11-10
Premium Chessgames Member
  Domdaniel: Um, this was a little unexpected. Not unanticipated, but unexpected.

Between live games from London and the annual prize competition, one's priorities are a tad strained just now.

Dec-11-10
Premium Chessgames Member
  kb2ct:

Since she is using Rybka not Fritz, she is just as predictable as we are. Best we get now is to trade queens to get our rook on the seventh.

:0)

Dec-11-10  whooops: Hey, this is good news. At least as good as it get's, now that Kxg8 is no longer possible.
Dec-11-10  Hesam7: <kb2ct: Since she is using Rybka not Fritz, she is just as predictable as we are. Best we get now is to trade queens to get our rook on the seventh.>

What is the line?

Dec-11-10
Premium Chessgames Member
  HeMateMe: We have a pawn! Do the evals go up?
Dec-11-10
Premium Chessgames Member
  morfishine: Great, she wants to continue. It'll be interesting to so what direction she goes

Voted: <38.Qxh5>

Dec-11-10
Premium Chessgames Member
  OhioChessFan: Is there any other remotely plausible moves besides 38. Qxh5 g6? If not, we maybe should ask <RandomVisitor> to slide ahead those 2 plies.
Dec-11-10
Premium Chessgames Member
  ossipossi: <lostinspace> yes but the continuous battage "it's a draw" makes it's effect. It's different: <white team is winning black is drawing>
Dec-11-10
Premium Chessgames Member
  kb2ct:

<Hesam7: <kb2ct: Since she is using Rybka not Fritz, she is just as predictable as we are. Best we get now is to trade queens to get our rook on the seventh.> What is the line?
>

If we use Rybka, it depends on whether she wants to sac a centipawn or two to keep the bishop. I would, Rybka doesn't

:0)


click for larger view

40.Ng4 Bg7 41.Qh4 Ne6 42.Nf6+ Bxf6 43.Qxf6 Qe7 44.Qxe7 Rxe7 45.Ne5 c5 46.Rd5 g5 47.Kg2 Kg7 48.Kf3 f5 49.h3 Ra7 50.Rd7+

Dec-11-10
Premium Chessgames Member
  AylerKupp: <cro777> Thanks, I will order both of them. Interesting comments on the ethics of using computers on the customer reviews of Modern Chess Analysis. I've never seen such an extreme distribution of 4/5 star comments and 1 star comments on any other set of Amazon customer reviews.
Dec-11-10  karpkasp: <OCF> BTW, I had a look on alternative 38. moves.

1) After 38. Nc4 Houdini 1.03a plays 38... g6 39. Qe4 Nxc5 40. Qe8+ Kg7 41. Nfe5 Qb7 42. Qxc6 Qxc6 43. Nxc6 and gives 0.04 (29 ply)

No real winning possibilities without the C5/C6 pawns.

2) 38. Rd6 g6 39. Qe4 Nxc5 40. Qe8+ Kg7 41. Rxc6 Qe7 42. Qxe7 Bxe7 =0.00

3) 38. Kg2 is maybe worth of investigations.

Houdini plays 38... g6 and gives a weird line including a N sac: 39. Qc2 Be7 40. Nf5!?/?! gxf5 41. Qxf5 Nf8 42. Ne5 f6 43. Nc4 Qb8 44. Qxh5 Qb4 etc. 0.14 (29 ply)

below, the final position evaluated by Houdini's analysis of move 38...g6 (black to play).


click for larger view

unbalanced material, the trheat g6+ seems promising for white but the c4 pawn gives maybe winning chances to black.

Did someone consider similar variations before me?

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