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Jan-Krzysztof Duda vs Ian Nepomniachtchi
Dortmund Sparkassen (2018), Dortmund GER, rd 6, Jul-21
Sicilian Defense: Canal Attack (B51)  ·  1/2-1/2
ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 7 OF 7 ·  Later Kibitzing>
Jul-21-18  devere: Clever play by Nepo!
Jul-21-18  Marmot PFL: The time difference is becoming acute, there is where Nepomniatchi's rapid tactics could pay off.
Jul-21-18
Premium Chessgames Member
  FSR: <ChessHigherCat> Who was a Republican? Mr. Rogers? Yes.
Jul-21-18
Premium Chessgames Member
  ChessHigherCat: Nimzovich with his exploitation of the material advantage. Mr Rogers is some pervert who hangs around kindergardens saying: Why hi, do I know you? Why hi! I'm sure I do!
Jul-21-18
Premium Chessgames Member
  Sneaky: For those who care what engines think... 52.b4! retains the initiative according to Stockfish. If true, thatís a hard move to see. And Iím not sure if it isnít just having horizon blindness. Itís in love with the idea of getting Qa2+ in.
Jul-21-18  Ulhumbrus: On 52 g5 White threatens 53 g6+ hence 52...hxg5 53 hxg5 fxg5. Then on 54 Rxf7 Qxc5 the g7 pawn is pinned and this suggests 55 f5-f6. This threatens 56 Rxg7+ Kh8 57 Qh2+ mate. What does Black propose to do about it?
Jul-21-18  Marmot PFL: White can't defend both e4 and a4, pity.
Jul-21-18
Premium Chessgames Member
  PawnSac: Stockfish rates 51.Kf3 Qc6 b4 (+0.92) as much weaker than 51.g5 (+2.0)

but all this is meaningless if he is losing on time. 13min vs. 1hr?!

Jul-21-18
Premium Chessgames Member
  FSR: Wow. I look away for three minutes, and suddenly it's a draw.
Jul-21-18
Premium Chessgames Member
  ChessHigherCat: <sneaky> : Yeah, it said b4 Bxc4 g5, but what if b4 Rxc4???
Jul-21-18  Ulhumbrus: It looks like a draw now. Duda will probably check this game with a computer later to find out which wins were available for White earlier.
Jul-21-18  nok: For a moment I thought it was Karpov playing but actually it was Duda.
Jul-21-18
Premium Chessgames Member
  PawnSac: Nepo should play it out and try a clock win
Jul-21-18
Premium Chessgames Member
  FSR: If only Duda had read this comment:

<An Englishman: Good Morning: If 52.Na4, does 52...Bxc4; 53.bxc4,Rxc4 do anything good for Black?>

Answer: why, yes, it does.

Jul-21-18  Marmot PFL: Looks like Nepomniatchi saves the Dortmund win, white vs Meier tomorrow isn't too dangerous. Giri might be the best bet to catch up if he draws.
Jul-21-18
Premium Chessgames Member
  ChessHigherCat: Fantastic save by Dr. Nepo, I thought he was going to stay 20,000 leagues under the sea.
Jul-21-18
Premium Chessgames Member
  WinKing: Great save by Nepo. He was dead in the water there for awhile. Kudos!
Jul-21-18
Premium Chessgames Member
  An Englishman: Good Morning: Another example of players running into trouble between moves 50-59. Would really like to see a series of experiments and studies of GMs brain processes and physical condition during games. The study of mental and physical fatigue after the time control might prove relevant to such professions as air traffic controllers, to give one example.
Jul-21-18  WorstPlayerEver: It's the tension. When Euwe collapsed in the last part of his match against Alekhine, he said that he maybe used too much energy to calm himself down during the last games.

You can't fight tension, you have to deal with it. The one way or the other.

Especially, when you think you are winning and suddenly you notice your opponent has counterplay.

Time will burn like rocket in your perception. While your opponent suddenly seems to have figured out all the right moves to play. It's a tunnel effect, which not only puts your mind on hold, but also your body; it just want to leave the hall.

Obviously, the effect is even stronger sometimes, when you are in a bad position.

The higher you are rated, the worse it gets. It's what shifts the gods from the lesser gods.

In any occupation this happens. Everyone has to deal with it. It's great, because it makes us human :)

Jul-21-18  Mayankk: As a patzer, whatís the obvious downside with the simple 52 Rxf7? The prospect of Black King harassing White Rook with Kg8? But canít the Rook find a safe place at e6 sometime down the road?
Jul-21-18
Premium Chessgames Member
  Count Wedgemore: <Mayankk> If White takes the bishop with 52.Rxf7, Black wins the knight with 52...Qxc5. He didn't want that exchange, apparently. But it was certainly playable. The move he played, 52.Na4? is no good and gives away the advantage. Better is 52.b4!, with the follow-up Qa4, and White has some pressure.
Jul-21-18
Premium Chessgames Member
  ChessHigherCat: <Mayankk: As a patzer, whatís the obvious downside with the simple 52 Rxf7?>

Good question, that's what I would have played. It's normal to simplify with a material advantage. In fact it maintains the advantage for white whereas the game line is a draw (but Duda would have had to play very precisely under great time pressure, and CW is correct that SF's first pick there is b4 (+1.30))

1) +0.50 (22 ply) 52.Rxf7 Qxc5 53.g5 hxg5 54.hxg5 fxg5 55.Qh2+ Kg8 56.Rb7 g4+ 57.Kg3 Qc8 58.Re7 Qc6 59.Qh1 Rxe4 60.Re8+ Qxe8 61.Qxe4 Qh5 62.Qxg4 Qh1 63.Kf2 Qh2+ 64.Qg2 Qf4+ 65.Qf3 Qh4+ 66.Ke2 e4 67.Qf2 Qh3 68.Qd4 Qxf5 69.Qd5+ Qxd5 70.cxd5

Jul-22-18  Mayankk: I still donít quite get it. The advantage after 52 Rxf7 Qxc5, as per your assessment, is just 0.5 despite White being up two connected passed pawns and there being no direct threat on either the backward b pawn or the unguarded and seemingly out-of-place Rook.

How do we explain this? Is it that Black can easily build a fortress and stop the advance of the two connected passed pawns or is it that Black can have his own counter-threats forcing White to simplify to an obvious drawing position?

Jul-22-18
Premium Chessgames Member
  ChessHigherCat: I don't know, to be honest I didn't play out the whole SF line. Can you play it out on the virtual board and post a FEN diagram of the final position? (the FEN feature is in "Settings"). Sometimes when you run SF from the final position the score changes dramatically.
Jul-22-18  Mayankk: Itís okay CHC. Not a big fan of computer analysis. Expressing an idea or tactics in simple words or thoughts is fun. Understanding SF analysis is too much of hard work!
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