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| Jun-17-11 | | JamesT Kirk: Ithink that 62..../Rgf1 is a great mistake! |
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| Jun-17-11 | | dakgootje: Very interested in their analysis in the press conference thing. |
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Jun-17-11
 | | Gypsy: Ah, so 57.Rc6+ was winning after all. (I was abut to post that suggestion, when I got dragged away by life.) Congrats to Karjakin. And Nisi certainly impressed by his performance. |
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Jun-17-11
 | | Administrator: Thanks to everyone for being with us today. The tournament resumes tomorrow at 8:30 AM USA/Eastern time. Hope to see you then. |
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Jun-17-11
 | | Domdaniel: It seems that 65.Rc2 Ra7 66.Ra2, followed by 67.Ra5, is a win after all -- contrary to what I thought I knew about these endings. Either way, ...h5 is bizarre. |
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Jun-17-11
 | | ajile: Why not 15..Qxb3 16.axb3 a6? |
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| Jun-17-11 | | virginmind: <dakgootje> on the official site there are only the video conferences for the other 2 games of round 6. the third should be up shortly. |
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Jun-17-11
| | Gypsy: <JamesT Kirk: Ithink that 62..../Rgf1 is a great mistake!> 62...Rxg4 63.a7... and White also wins. |
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Jun-17-11
| | ajile: An important game in this line:
Kamsky vs Piket, 1995
Black ends up with a weak e pawn but can probably still draw. Key difference is White plays 14.Nxc4 instead of 14.Qxc4. |
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| Jun-17-11 | | FSR: Why didn't Nisipeanu play 5...Nf6 like Radjabov? It's a draw - http://www.chessgames.com/perl/ches.... |
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| Jun-17-11 | | Kinghunt: I left this game a while ago, convinced that it was drawn. It seems that Nisi made it <almost> all the way to a clear draw, before he played 65... h5?? A simple move like 65...Kg6 would have been sufficient to hold. I can only assume that he was suffering some kind of hallucination about the position when he played that. |
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Jun-17-11
| | Domdaniel: Most normal (single-)Rook endings are drawn when each side has a lone kingside pawn and White has an extra a-pawn on the 6th rank, blockaded by the Black Rook. It seems Nisipeanu went into the Rook exchange line at the end thinking this would be the case, only to find it was one of the rare White wins. The disposition of Black's pieces after 64.Rxf7+ Rxf7 65.Rc2 Ra7 (obviously necessary, and better than ...h5 which loses at once) 66.Ra2 Kg6 67.Ra5 
click for larger viewis such that Black is in permanent Zugzwang. His pawn can't move without being lost, his King can't move away from it, and the Rook can't leave the a-pawn except to check. White can either shelter from checks, or run the enemy Rook into a corner. Black is helpless while the White King crosses to help the a-pawn: the normal defence - checks and/or kingside advance - fails, eg ... 67...Kg7 68.Kg3 Kh7 69.Kf4 Kg6 70.Ke4 Kh7 71.Kd4 Rd7+ (passive defence clearly isn't working) 72.Kc5 Rg7 (72...Rd1 loses quickly after 73.a7, with the King either going to a6 or approaching the checking Rook)
73.a7 Rg6+ 74.Kb4 Rxg4+ 75.Kc3 Rg3+ 76.Kd2 and wins. White will Queen the a-pawn, and Black's h-pawn has no hope against a Rook and King. Nisipeanu had earlier drawing opportunities, but I suspect that he simply assumed, wrongly, that he could hold the single-rook ending. |
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Jun-17-11
 | | messachess: <Kinghunt> Yes, it seemed as if he was playing K. about even. Something was missing in N.s vision to get into a final position like that. |
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| Jun-17-11 | | arkansaw: Most double rook endings are drawn, but this is not one of them! |
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| Jun-17-11 | | notyetagm: Nisi missed an easy chance to draw.
http://www.thechessmind.net/storage... <31...Nxb4 [31...Re4= ] > |
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| Jun-17-11 | | rannewman: notyetagm, Nisi had less then 4 minutes (if I remember correctly) on his clock when the move was made. I am sure that if Karjakin would have thought for two seconds insted of trying to blitz Nisi down he wouldn't have played 31.a4. On the other hand it worked quite well for him :/ |
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Jun-17-11
| | ajile: <FSR: Why didn't Nisipeanu play 5...Nf6 like Radjabov? It's a draw - http://www.chessgames.com/perl/ches...; Wow Radjabov has lost only one game as Black in this line. Pretty impressive.
One win. One loss. And the rest were draws. |
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| Jun-18-11 | | notyetagm: Karjakin vs Nisipeanu, 2011 31 a2-a4?
click for larger viewKarjakin playing White has just blundered his advantage with 31 a2-a4?. What move should Nisipeanu playing Black have played here? (VARIATION)
31 ... ♖e2-e4!=
click for larger viewBlack should simply(!) have <REINFORCED THE PIN> with 31 ... ♖e2-e4!=, with equality. The chess engine stockfish-2.1.1 at chessbomb.com gives the following line as a mere <0.04> advantage for White: http://chessbomb.com/o/2011-bazna/0... [ 31. ... Re4 32. Rhd1 Nxb4 33. Rd8+ Kf7 34. cxb4 Rbxb4+ 35. Kc3 Rxa4 36. Rd7+ Kg6 37. Kd3 Reb4 38. Rf1 Rb3+ 39. Kc2 Rg3 40. Rff7 Ra2+ 41. Kb1 Rgxg2 ] Instead, Black returned the blunder with 31 ... ♘d3x♗b4?. (CONTINUATION)
31 ... ♘d3x♗b4?
click for larger viewAn amazing case of chess blindness by Karjakin and Nisipeanu, this sequence 31 a2-a4? ♘d3x♗b4?. |
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| Jun-18-11 | | notyetagm: Game Collection: REINFORCE THE PIN! REINFORCE THE PIN! Karjakin vs Nisipeanu, 2011 Near 2700 Nisipeanu overlooks pin-reinforcing 31 ... Re2-e4!= |
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| Jun-18-11 | | tuthmes: I believe is more chance for draw, if Nisi instead 35...Ree4, play 35...Rcc3.
36. Ra4 Rcd3+ 37.Kc2 Ra3 38.Rha1 Re2+ 39. Kd1 Rae3 40.Rc1 R:g2. |
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| Jun-18-11 | | jussu: Strange miss: during the game, I thought black would play 41... Rc6 and the game would end in draw soon, because 42. Ra1 is hopelessly passive and 42. Rb8+ Kf7 43. Rb7+ Rxb7 44. axb7 Rb6 45. Ra7 Kf6 should be dead drawn. As Nisipeanu kept thinking, I began wondering what was wrong, and found the neat 46. Ra6 winning immediately. So I decided that 41... Rc6 lost. Missing 45. Rb3+ in that line feels quite embarrassing, and I am a hopeless patzer. How could Nisipeanu miss such a move, I simply don't understand. |
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Jun-18-11
| | Gypsy: <jussu> Nice tactics! Thx. The 41...Rc6 would have drawn because of the exposed Kf3; had the White K been tucked in on h2, the 41...Rc6 would lose brilliantly. |
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| Jun-18-11 | | JamesT Kirk: 62.../Ra1= |
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Jun-25-11
| | Gypsy: <JamesT Kirk: 62.../Ra1=> And the drawing variation is...? As far as I see it, variations
<63.Rc7+ Rf7> 64.Rxf7+ Kxf7 65.Rxh6... and/or
63.Rc7+ <Kg8> 64.Rd8+ Rf8 65.Rxf8+ Kxf8 66.a7... (and Rc7-b7-b8+) both look easy to win. |
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| Jun-29-11 | | jussu: Of ourse, I was just plain arrogant, thinking that Nisipeanu missed a silly check. Something like 41... Rc6 42. Rb8+ Kf7 43. Rb7+ Rxb7 44. axb7 Rb6 45. Ra7 Rb3+ 46. Kf4 Kf6 47. Ke4 Ke6 48. b8Q Rxb8 49. Rxg7 may well be winning for white - at least I don't see a clear way to hold it. |
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