4 ms·

That's because ELO only gets updated at the end of a tournament, not every game.

tspiteri 8y ago
At https://2700chess.com/ https://2700chess.com/ you can see the live rating with the effect of each game since the last periodic FIDE update. Expanding either Carlsen's or Caruana's rows will show you a list of the seven games since the last update, with a change of 0.0 next to each.
fwn 8y ago
That's interesting. Do you have a source for that? I always believed it is because either FIDE ratings are only updated once a month (see 7.1[1]) or because their ELO is too close, therefore the prob. of winning is 0.5 for both anyways. [1] http://www.fide.com/component/handbook/?id=172&view=article http://www.fide.com/component/handbook/?id=172&view=article
- yesenadam 8y ago
  That's not true about Elo being updated particularly at the end of tournaments - either official/FIDE ratings or live ratings. I heard (possibly from the Chess24 commentators) that if their difference in rating was 4 or more, each draw would bring them closer together in live rating - Magnus would lose rating with each draw; but as it's 3, their ratings don't change. i.e. anacleto was right, thomasahle wrong. Also, Elo isn't an acronym (ELO) as one might think - it's named after its inventor Arpad Elo. https://en.wikipedia.org/wiki/Elo_rating_system https://en.wikipedia.org/wiki/Elo_rating_system Interestingly, when I first looked at this page, most of the good/correct comments were voted down, most of the bad ones not, it was weird. (It made me suspect that other HN pages are like that but I don't know it! - I know chess better than most subjects discussed on here) But that has now almost totally been corrected.
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  - iainmerrick 8y ago
    Could it just be that the most recent comments were listed first? I think HN does that to give them a chance to get read and voted on.
tzs 8y ago
FIDE also calculates a game-by-game "live" rating. It's not normally published but it is used for some title requirements. For example the requirements for the most common way to earn the GM title include a requirement that your rating has reached 2500. The live rating is used for that.

At https://2700chess.com/ https://2700chess.com/ you can see the live rating with the effect of each game since the last periodic FIDE update. Expanding either Carlsen's or Caruana's rows will show you a list of the seven games since the last update, with a change of 0.0 next to each.

fwn 8y ago

That's interesting. Do you have a source for that? I always believed it is because either FIDE ratings are only updated once a month (see 7.1[1]) or because their ELO is too close, therefore the prob. of winning is 0.5 for both anyways. [1] http://www.fide.com/component/handbook/?id=172&view=article http://www.fide.com/component/handbook/?id=172&view=article

yesenadam 8y ago
That's not true about Elo being updated particularly at the end of tournaments - either official/FIDE ratings or live ratings. I heard (possibly from the Chess24 commentators) that if their difference in rating was 4 or more, each draw would bring them closer together in live rating - Magnus would lose rating with each draw; but as it's 3, their ratings don't change. i.e. anacleto was right, thomasahle wrong. Also, Elo isn't an acronym (ELO) as one might think - it's named after its inventor Arpad Elo. https://en.wikipedia.org/wiki/Elo_rating_system https://en.wikipedia.org/wiki/Elo_rating_system Interestingly, when I first looked at this page, most of the good/correct comments were voted down, most of the bad ones not, it was weird. (It made me suspect that other HN pages are like that but I don't know it! - I know chess better than most subjects discussed on here) But that has now almost totally been corrected.
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- iainmerrick 8y ago
  Could it just be that the most recent comments were listed first? I think HN does that to give them a chance to get read and voted on.

tzs 8y ago

FIDE also calculates a game-by-game "live" rating. It's not normally published but it is used for some title requirements. For example the requirements for the most common way to earn the GM title include a requirement that your rating has reached 2500. The live rating is used for that.