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Ernesto Inarkiev vs Vassily Ivanchuk
FIDE Jermuk Grand Prix (2009), Jermuk ARM, rd 2, Aug-10
Sicilian Defense: Lasker-Pelikan. Sveshnikov Variation Chelyabinsk Variation (B33)  ·  1/2-1/2
ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Aug-10-09  Marmot PFL: Many ways to win, but my favorite is 83 Nd5! and the king can't approach - 83...Nh5+ 84 Kxe5 Kd7 85 Nf6+. Kramnik I would expect to find this move blindfolded.
Aug-10-09  Jason Frost: <Marmot PFL: Many ways to win>

83. Nd5+ is the only way to win and is very complicated, I wouldn't expect anyone to find it (maybe play it by accident, but not find that it is winning) after such a long game in blindfold.

Too bad Inarkiev didn't find it, but I think only Jako, Kramnik and the other top endgame players can be expected to find such a move in a regular game.

Aug-10-09
Premium Chessgames Member
  tamar: Missing 83 Nd5 lengthened the winning process, but 83 Kxe5 was one of several longer tablebase sequences.

Inarkiev finally gave away the win with 85 Kf8 when 85 Kg7 would allow him to chase away the knight from f5 with Kf6.

Even if he had found that, it takes an additional knight tour through g2 to take away additional squares.

Like anything else, once you have seen it, it does not seem incredibly difficult, but that is an illusion.

http://www.k4it.de/index.php?topic=...

Aug-10-09  Jason Frost: <tamar> Thanks for the clarification. I was playing through it with Fritz and it was only able to win after 83. Nd5, very interesting that tablebase shows 6 wins. Still think it is very hard to win for any human however.
Aug-10-09
Premium Chessgames Member
  tamar: Pity that Inarkiev missed the study like win, after assiduously setting it up with 68 f4.

<Jason Frost> Difficulty is always tough to measure. By taking 83 Kxe5, Inarkiev insured that he would not get a zero based on time loss.

Will be interesting to hear if either player saw the win.

Aug-10-09  walker: Chucky is genius! Period.
Aug-10-09  shakh.i.shekh: I see Ivanchuk found a bit of Ponomariov in him, defending a poor end game to the bitter end and making a draw when he might have (should have?) lost. It always stuck me that unlike Ponimariov, Anand, and Fischer, Ivanchuk typically did display great determination in defending lost games.
Aug-10-09  shakh.i.shekh: Meant to say that unlike Ponomariov, Anand and Fischer, Ivanchuk rarely displays great tenacity in defending lost end games.
Aug-11-09  kurtrichards: This could have given Inarkiev a point if not for time problem. But Ivanchuk is a great defender so 1/2-1/2.
Aug-11-09  Knight13: <kurtrichards: This could have given Inarkiev a point if not for time problem.>

And I wonder why no one ever says <this could have given Ivanchuk a point if not for time problem> or <Ivanchuk could've lost if he got in time trouble>, knowing that he is a bit infamous for getting in time pressure often?

Aug-15-09  Resignation Trap: Inarkiev missed his last chance to win in this position after 85...Nd6+:


click for larger view

According to Shredder Tablebase: http://www.shredderchess.com/online... , Ernesto's 86. Kf8? only draws. Instead, 86.Kg7 wins.

Here's Black's toughest defense: 86.Kg7 Nf5+ 87.Kf6! Nd6 88.Nd5 Nd8+ 89.Kf7 Nd6+ 90.Kg7 Ke6 91.Kh7! Nf5 92.Ne3! Ne7 93.g7 Ke5 94.Ng2 Nd5 95.Nh4 Nf6+ 96.Kh8 Ke6 97.Ng6 Kf7 98.Ne5+ Ke6 99.Ng4 and wins easily.

Aug-26-09  Hot Logic: I guess this helps validate what players say when they complain about endgames getting butchered by time trouble [due to shorter time controls].
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