Jul-25-10
 | | HeMateMe: impressive technique. Is there a table base for this? Is 2-1 pawns a win, if the pawns are connected, or did black miss a draw? |
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Jul-25-10
 | | Peligroso Patzer: Here are a few variations demonstrating White's win from the final position (with Black to move): 
click for larger view<60...Kg6> [also insufficient would be 60...Ng6 61.Kxe2 Nxh4 62.Nxh4 Kg5 63.Kf3  ; or
60...e1Q+ 61.Kxe1 Ng2+ 62.Ke2 Nxh4 63.Nxh4 Kg5 64.Kf3 ] <61.Ke3> [But not 61.h5+? Nxh5=;
nor 61.g5? e1Q+ 62.Kxe1 (62.Nxe1 Nh3+ 63.Kg3 Nxg5=) 62...Ng2+ 63.Kf2 Nxh4 64.Nxh4+ Kxg5=] <61...Ng2+> [or 61...Nd5+ 62.Kxe2 Nf6 63.Ne5+ Kg7 64.Kf3 ] <62.Kxe2 Nxh4 63.Nxh4+ Kg5 64.Kf3 >. |
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| Jul-25-10 | | Little Chest Partner: <HeMateMe: impressive technique. Is there a table base for this? Is 2-1 pawns a win, if the pawns are connected, or did black miss a draw?> It was a difficult draw for Black until the losing 51...Nf7 1: P Leko - A Naiditsch, Dortmund Dortmund GER 2010
click for larger viewAnalysis by Fire 1.31 w32:
51...Ne4 52.h4 Nc5 53.Ne1 Nd7 54.Kf2 Ne5 55.Kg3 Kg7 56.Kf4 Ng6+ 57.Kg5 Nf8 58.h5 Nd7 59.Kh4 Nc5 60.g5 Ne6 61.Kg4 Kh7 62.Ng2 Nd4 63.h6 Ne6 64.Kf5 Nc7 65.Ne1 Nd5 66.Nd3 Ne3+ 67.Kf4 Ng2+ 68.Ke5
= (0.16) Depth: 33 00:20:02 1829mN
Resulting in this:
click for larger viewAnd no player can improve |
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Jul-25-10
| | HeMateMe: Very interesting. One might think that a player of Leko's caliber would find the draw, with so few pieces on the board. Easy for us to say, of course... |
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| Jul-25-10 | | ounos: Queen's gambit <declined>? Is this really considered declined?? |
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| Jul-25-10 | | ounos: 39. Kf1 appears to win a piece or convert to a won pawn endgame, but this is only illusory:
click for larger view39. ...Nxg3+! 40. hxg3 Rc3
click for larger view |
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| Jul-25-10 | | Alphastar: <ounos> If it isn't 1. d4 d5. 2. c4 dxc4 (QGA), or if it doesn't transpose to QGA lines later on (which might happen if white would play 5. e3) then it is a QGD. Ragozin variation, if I remember correctly. |
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| Jul-25-10 | | ounos: <Alphastar> thanks. After posting, I was thinking that "ok, this variation is not an accepted gambit anyway", I simplistically thought that after dxc4, even if black doesn't try to protect then that c4 pawn, it would be still an accepted "gambit". Probably you are right though. |
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| Jul-26-10 | | notyetagm: Leave it to Leko to go all out for a win in the last round of a tournament when the tournament is already over. |
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| Jul-26-10 | | YouRang: With this loss, Naiditsch shares the cellar with Leko in Dortmund 2010. |
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| Jul-29-10 | | The Rocket: <ounos>
strangely this is called both queens gambit declined vienna and queens gambit accepted vienna chessmaster gm editions opening book calls it queens gambit accepted vienna and chessgames lists it as declined.. strange.. |
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| Aug-10-10 | | YouRang: <Little Chest Partner: <HeMateMe: impressive technique. Is there a table base for this? Is 2-1 pawns a win, if the pawns are connected, or did black miss a draw?>
It was a difficult draw for Black until the losing 51...Nf7 1: P Leko - A Naiditsch, Dortmund Dortmund GER 2010
Analysis by Fire 1.31 w32:
51...Ne4 52.h4 Nc5 53.Ne1 Nd7 54.Kf2 Ne5 55.Kg3 Kg7 56.Kf4 Ng6+ 57.Kg5 Nf8 58.h5 Nd7 59.Kh4 Nc5 60.g5 Ne6 61.Kg4 Kh7 62.Ng2 Nd4 63.h6 Ne6 64.Kf5 Nc7 65.Ne1 Nd5 66.Nd3 Ne3+ 67.Kf4 Ng2+ 68.Ke5 = (0.16) Depth: 33 00:20:02 1829mN> I think you're right that 51...Ne4! draws, although I'm not convinced that <51...Nf7> was the "losing" move. It appears that black may still have had a drawable game had he found 56...Nf7!, and the continuation might go as follows: 57.Ke3 Ng5 <attack Ph3> 58.h4 <note: 58.Ke3 Ng5 59.h4 Nf7 transposes> Nf7! <prevents 59.Kxe2 with 59...Ne5! 60.g5 Kf5 61.Ng2 Ng6 draw> White cannot make progress because if the white K retreats to take the black pawn, black can sac his N for both white pawns. The white N cannot help with the pawn advance since it's tied to defending against promotion. Note: 57.h4 Kg6 amounts to the same problem for white. However, black played <56...Ng6?>, which seems to be the true losing move, giving white the opportunity to eat the black pawn and keep his own pawns. The ending was very well played by Leko. |
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| Apr-27-17 | | Toribio3: Excellent endgame technique by GM Leko! |
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Kibitzing
