Chess rating system

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headofwords

Has anything happened on the site to change the points given out for winning?  I was off-line and busy for a few weeks and my ranking dropped down.  I just beat someone only 60 or so points ahead of me but got almost fifty points.  I'm sure it used to be 15 or something.

Niki18

Me too!

its so stupid!!!

kunduk

ha ha

Paranoid-Android
headofwords wrote:

Has anything happened on the site to change the points given out for winning?  I was off-line and busy for a few weeks and my ranking dropped down.  I just beat someone only 60 or so points ahead of me but got almost fifty points.  I'm sure it used to be 15 or something.


It's called "Glicko rating system". What this system does is that if a player doesn't play for some time, in his next game he will gain or lose more points than if he had been playing every day. This is good, because in those 2 weeks in which player haven't been playing, his chess skill could have changed - he could have forgot some stuff or he could have learned some stuff.

http://math.bu.edu/people/mg/glicko/glicko.doc/glicko.html

"The problem with the Elo system that the Glicko system addresses has to do with the reliability of a player's rating. Suppose two players, both rated 1700, played a tournament game with the first player defeating the second. Under the US Chess Federation's version of the Elo system, the first player would gain 16 rating points and the second player would lose 16 points. But suppose that the first player had just returned to tournament play after many years, while the second player plays every weekend. In this situation, the first player's rating of 1700 is not a very reliable measure of his strength, while the second player's rating of 1700 is much more trustworthy. My intuition tells me that (1) the first player's rating should increase by a large amount (more than 16 points) because his rating of 1700 is not believable in the first place, and that defeating a player with a fairly precise rating of 1700 is reasonable evidence that his strength is probably much higher than 1700, and (2) the second player's rating should decrease by a small amount (less than 16 points) because his rating is already precisely measured to be near 1700, and that he loses to a player whose rating cannot be trusted, so that very little information about his own playing strength has been learned."

sure_shock

how can i get a chess rating?can i get a rating by rapid games or by regular 2hour per 40 move game or by 90min game play to finish?thanx in advance for your answers

ichabod801
sure_shock wrote:

how can i get a chess rating?can i get a rating by rapid games or by regular 2hour per 40 move game or by 90min game play to finish?thanx in advance for your answers


 All you have to do to get ratings is play some games. You will get different ratings depending on the types of games you play: online, chess 960, and three different live ratings depending on the speed of the game.

myfreechess

Every body starts with1200, even if they are a grand master

DylanAM

A rating is a snapshot of a moving object.  If you were to snap a picture of a train moving down a track, when you look at the picture, what you see is the spot where the train was at during that moment in its travel.  It is the same way with chess ratings.  Your rating is a snapshot of a constantly moving number.  Don't think of it as a measure of your skill.  Think of your rating as a frozen moment in the measure of your time within a system.

TheGrobe

It's not even a snapshot so much as an impression.

Think of it more like where the train was calculated to be at the time of the last change of relative position based on the list of other trains it had been passed by and that it had passed and where those trains were calculated to be when they overtook or were overtaken.

SergioBarackGutierre

I don't see the point in ratings on this site...

Little-Ninja

Same reasons u have them for OTB. To guage what level/skill each person is roughly at to make it easier to select players you feel could give u a good game.

philtheforce

chess ratings are fun ... i do take them seriously and like to be above 1600

Portraits

   As a new member, my first query has been answered here about my rating. cheers all Wink

heisrisen

looking for my friend respire

CPawn

Just play the great game...learn..have fun...make new friends...see new places.  A 'rating" is nothing compared to all of that.

zhiwang

so how does it work I dont want to read the whole thing

Fianjello

win you gain points lose you loose pts draw you gain or loose pts depending on opponents rating. the higher rating your opponent is the more points you get if you win and vice versa.

xLoserx

How does the ratings here compare to i.e FIDE's? Is there a way to tell how much a 2000 FIDE rated person would have here on Chess.com?

ichabod801
xLoserx wrote:

How does the ratings here compare to i.e FIDE's? Is there a way to tell how much a 2000 FIDE rated person would have here on Chess.com?


 Not really. You have different rating systems, different populations, different skill sets. A 2000 FIDE would likely have a higher rating here, but how much higher would really depend on the player.

xLoserx
ichabod801 wrote:
xLoserx wrote:

How does the ratings here compare to i.e FIDE's? Is there a way to tell how much a 2000 FIDE rated person would have here on Chess.com?


 Not really. You have different rating systems, different populations, different skill sets. A 2000 FIDE would likely have a higher rating here, but how much higher would really depend on the player.


Different populations and different skill sets can't be used as an argument in this question. Ratings are based on skills (how well you perform over a set of time/games) - and it doesn't segregate. A 2000 rated FIDE player in Norway is approximately as good as a 2000 rated FIDE player from Spain.

But my question was if there is a way to measure Chess.com ratings up against FIDE ratings so that us without a FIDE rating can make a qualified guess of how good we are based on our rating on chess.com.Smile