Chess rating system

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Avatar of amta925
؛؛Pease tell mem with some examples, how thte new rating of a player is calculated? Thank you for your explanation> amta925.eight: bold; display: block;">fischer wrote:
AlecKeen wrote:Becca wrote:Rating has its place but its not the most important thing. Sometimes you can lose a game on time and it will seriously affect your rating this has nothing to do with how well you play.

Oh yes it does! How well you play includes how well you manage your time. Time is as much part of Chess as it is in other games. In football you could score the greatest goal in history, but if the referee blows time before it goes in it doesn't count. Similarly in Chess if you don't get your moves in within the time, you lose, and correctly so.


 I could be wrong, but I assume she's talking about blitz games. There are lots of people who are great blitz players but terrible in long games, and vice versa.

Avatar of Sceadungen

What is  a high rating  on the tactics trainer.

I am lousy at Blitz being an old codger

Avatar of narley
[COMMENT DELETED]
Avatar of Juslrning

I personally do not like to play for rating.  Especially since I had some games when the piece slipped from my grip before I go to to the square I wanted to occupy.  Since Chess.com does not have and "undo" option, it can be costly.I lost several games that way.  Obviously, this will affect your rating.  In some of the games, my opponents and I agreed to a draw.

 

One other concern I had was about the time.  I  do not like wtith the clock, because I need lots of time to consider all my options.  I notice that some players set their clocks for 30, 60, 120 minutes.  Too much time is just as bad as too little.  I suspect that lots of players are cheating.  How?  They have 2 computers set up.  Perhaps one is a lap top.  They have  computer chess game installed on it and are playing on line with another computer.  They mimic their opponents moves on the lap top then transfer the move the computer makes to the real game they are playing in chess.com.

 

I know this sounds cynical, but I think that is cheating. This could be one reason why some people set their timers for long games.  What are your thoughts?

Avatar of Barry_Lyndon

My (modest) opinion is that chess.com ratings are not too realistic. I think the ratingsystem could use some modification (ratingformula). I know, cc-rating is not to be compared with rating in real life, but I also know some cc-chesssites use a formula giving an almost realistic rating. Even after playing some 50 cc-games. B.t.w.: I love this site, great features.

Avatar of hblume

are the chess.com ratings meaningful off the site? if you tell someone your elo rating is, say, 1500, do you have to add your chess.com elo rating is, say, 1500?

Avatar of Blues69

I beat someone who had over 100 points higher than me and it said "null" and I got no points and I don't think he lost any. The rating system is screwed.

Avatar of Barry_Lyndon

Weird. I think the ratingformula is weird. A player played only 4 games, won all, rating raised from 1200 to 2037......weird

Avatar of mickyflynn

I think over OTB rating is harder to  get

Avatar of ichabod801
hblume wrote:

 

are the chess.com ratings meaningful off the site? if you tell someone your elo rating is, say, 1500, do you have to add your chess.com elo rating is, say, 1500?


No. Chess ratings are relative. That is, combining it with your opponent's rating gives an estimate of your score. But they have to be rated in the same pool of players. Your chess.com rating is only relevant when playing here. Your USCF rating is only relevant in USCF tournament. Your FIDE rating is only relevant in FIDE tournaments. And so on.

Avatar of john123123654

i will tell u but first shut up im good at cheess ok if ur down with i got 3 words for ya we hate Coolhahaa im never lost

Avatar of JahBuloN69fr

lol!!! hi all!!!! how are you?!?

Cool

Avatar of insertnamehere99

lolz people... just play the game.

Avatar of orangehonda

This site has a funny mixture, there's total patzers but also titled players... and topics like this go on for 20+ pages heh.

Avatar of Sensuinaga

I think this needs to be read

http://www.chess.com/forum/view/suggestions/this-will-make-the-ratings-more-accurate

Avatar of r3zH
viswanathan wrote:
turtle wrote: i am starting to understand the rating system, but how do you determine points during a game? are certain peices worth different points? 

turtle, the general points system followed is as follows:

pawn - 1pt.

knight/bishop - 3pts.

rook - 5pts.

queen - 10pts.

of course points are not everything... the position of your piece also matters.. for example you might not mind losing a bishop or rook to save a pawn on the 7th row.. and points dont have any bearing on the game result.. it is just a basic framework to help beginners understand the value of different pieces


This is wrong valuation of pieces.

Correct valuation of pieces are:

Pawn =1 point

Knight   = 3.25 Points

Bishop  = 3.25 Points

Rook= 5 Points

Queen = 9 Points

Avatar of BalticKnight

There is no correct valuation of pieces. It varies with what kind of player you are and what kind of position we are playing. This is also why chess is difficult and interesting. The value system is mainly for beginners so they can get a start into a game that later becomes more complex. True, chess engines use a value rating like this but a lot of other parameters are involved aswell. For example the other day I was playing in my club's championshiop and sacrificed first a rook for a bishop and later another rook for a knight and a pawn. Then I would have been behind about 3 points  (5+5)-(3+3+1). Actually the position was even also when valued by some engines like Fritz 11.

Avatar of TenaciousE

Although there are probably problems with this approach, I believe experienced players who are new to the site should be able to have an initial rating set to something other than 1200. 

As for the Glicko system, the concept of taking into account recent activity (or the lack thereof) seems like a good idea.  At USCF tournaments, I often find players who are returning after having been away from the game for awhile -- their rating does not reflect their true strength, which distorts the rating results for those people who play them.

Avatar of Scarblac
TenaciousE wrote:

Although there are probably problems with this approach, I believe experienced players who are new to the site should be able to have an initial rating set to something other than 1200. 


 I agree. It should be set to something like 85716*. Perhaps then people will accept that ratings aren't comparable.

(* of course, when this change happens, existing players should get 85716-1200=84516 rating points added)

Avatar of TenaciousE

Having read your earlier posts on the subject, I fully understand your response, and you are entirely correct.  However, so long as chess.com ratings have some resemblance to ratings from other organizations such as the USCF or FIDE, people will attempt to compare ratings among organizations.  Given that this is unavoidable, my thought was that at least some measure of comparability could be maintained by using external ratings as for the initial rating.  I know just enough about statistics and the theory of rating systems to realize that this is probably wishful thinking.  From a more practical perspective, I think it lessens the playing experience when you are playing a "new" or provisionally-rated player, only to find his playing strength is nowhere near what is indicated by his rating.  Intuitively, I feel there is some practical benefit for a USCF/FIDE 2000-rated player (just an example) to get an initial rating that is at least directionally representative of his strength.  For a patzer like me, it probably doesn't matter that much.