Chess rating system

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18th October 2009, 08:18am
#481
by woton
United States
Member Since: Sep 2009
Member Points: 49
brandonQDSH wrote:

Whipster,

Are you sure that OTB ratings start off at 1000? What is the FIDE policy? I think USCF starts out at 1200.


 The USCF starts people out as unrated, and calculates a provisional rating after each tournament.  The provisional rating, which becomes permanent after 25 games, is based on the player's win/loss record and his opponent's ratings.

22nd October 2009, 09:33pm
#482
by 10_1_3_1_19_19
United States
Member Since: Apr 2008
Member Points: 33

How do the ratings here compare to the ratings on others chess sites? There was another site I played on before I discovered chess.com and my rating there was around 400 points higher than it is here. I suspect the people that play here are better, that's why I get whooped by lower rated players.

23rd October 2009, 12:04pm
#483
by DMX21x1
Scotland
Member Since: Oct 2009
Member Points: 459
Charlie91 wrote:

viswanathan wrote:

...turtle, the general points system followed is as follows:

pawn - 1pt.

knight/bishop - 3pts.

rook - 5pts.

queen - 10pts.

of course points are not everything...


 

Correct me if I'm wrong, some books say the relative strength of the bishop is higher by a fraction of a point (1/4) -- 3 1/4 or whatever fraction, and queen is 9 points, and the king is 3 points.


 The king doesn't have a value, he's priceless.

23rd October 2009, 12:36pm
#484
by DMX21x1
Scotland
Member Since: Oct 2009
Member Points: 459
woton wrote:
Marshal_Dillon wrote:
erik wrote:

everyone starts at 1200. then as you play you get a new rating. it is all based on the Glicko ratings system :) check it out - it's a fun read!

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


 The problem I have after reading this is Glicko assumes the rating of a player who has been out of the game for a while is not reliable. Let's say that I play chess for 20 years and earn a 1700 rating then stop playing for 20 years. A new prodigy comes up and after 2 years of playing has a 1700 rating but his rating is earned more recently than mine was. That would make the prodigies rating after only two years of play more valid than my rating earned after 20 years of play because I haven't played in 20 years. I could have 1000 professional games under my belt and the young prodigy only 100 so how is my rating less valid than his? I would consider the newer players rating the less reliable because he has fewer games. Time should have no effect on how many points someone gains or loses from a match. If we could bring J.R. Capablanca back from the dead would anyone say that his rating is less valid than Vladimir Kramniks?  


 There is some validity to the assumption that a player's rating is less reliable if they haven't played for a period of time.  Chess is like most games; if you don't play, your skill decreases (you become rusty), and the rating that you had in the past is not indicative of your present skill.  If we could bring Capablanca back from the dead, he would have to play for awhile to regain his past skill level. 


 I think it's a system within another grading system.  Seems to me there are 5 categories a Chess player falls into.

1. Beginner  2. Intermediate  3. Advanced  4. Master  5. Grandmaster 

I think ratings are more like a 'current form' guide.  A high rating suggests an opponent who is used to winning, but it doesn't matter unless you know the calibre of his opponents.  If you don't know then all you can deduce from the rating is that your opponent knows how to play Chess.

If your a beginner there's no need to know anything about ratings.  If your Intermediate you probably play at lot online or at a club but don't concern yourself with ratings.  Advanced players might take notice of ratings.  With Master & Grandmaster it goes with the territory.  All this stuff is probably the reason why Chess is broken into different 'federations', like boxing. I don't think any of it matters unless you play for a living!  Personally I feel that greatest player in the world is probably some old guy who plays in the park every day for the last 40 years, who doesn't use a clock and gives you a funny look if you talk about ratings.  Tongue out

27th October 2009, 10:58am
#485
by Sceadungen
Liverpool United Kingdom
Member Since: Jun 2009
Member Points: 341

I am getting hammered ny Glicko in the tactcal problems section. I have dropped 300 points today I am getting +3 or 4 for solving and minus 15 and 16 for time or failing.

What is going on here have you tightened it up or am I getting dumber ??

29th October 2009, 07:01pm
#486
by tjnimmo
New Orleans, LA United States
Member Since: Oct 2009
Member Points: 85

This is the average rating that you can have.  During your first few games, your rating will change alot.  As you play more games, you will get our true rating based on how many you win or lose.

31st October 2009, 07:52pm
#487
by possit96
United States
Member Since: Oct 2009
Member Points: 2

Ok, im confused, is it better to have a high rating or a low rating?

1st November 2009, 08:33am
#488
by ichabod801
Maryland United States
Member Since: Dec 2008
Member Points: 862
possit96 wrote:

Ok, im confused, is it better to have a high rating or a low rating?


High

1st November 2009, 10:55pm
#489
by amta925
Jordan
Member Since: Oct 2009
Member Points: 1
؛؛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.

3rd November 2009, 02:16pm
#490
by Sceadungen
Liverpool United Kingdom
Member Since: Jun 2009
Member Points: 341

What is  a high rating  on the tactics trainer.

I am lousy at Blitz being an old codger

9th November 2009, 10:39am
#491
by narley
Birmingham United Kingdom
Member Since: Mar 2009
Member Points: 2
[COMMENT DELETED]
12th November 2009, 06:08am
#492
by Juslrning
Virgin Islands US Virgin Islands
Member Since: Oct 2009
Member Points: 4

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?

14th November 2009, 02:47am
#493
by Barry_Lyndon
Cill Airne Ireland
Member Since: Oct 2009
Member Points: 65

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.

14th November 2009, 12:19pm
#494
by hblume
Cambridge United States
Member Since: Dec 2008
Member Points: 17

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?

15th November 2009, 06:14am
#495
by Blues69
London United Kingdom
Member Since: May 2009
Member Points: 1

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.

15th November 2009, 08:02am
#496
by Barry_Lyndon
Cill Airne Ireland
Member Since: Oct 2009
Member Points: 65

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

15th November 2009, 08:37am
#497
by mickyflynn
wakefield England
Member Since: Apr 2009
Member Points: 43

I think over OTB rating is harder to  get

15th November 2009, 05:06pm
#498
by ichabod801
Maryland United States
Member Since: Dec 2008
Member Points: 862
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.

22nd November 2009, 05:59am
#499
by john123123654
Bahrain
Member Since: Nov 2009
Member Points: 3

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

24th November 2009, 12:38am
#500
by fr69fr
Paris France
Member Since: Oct 2009
Member Points: 41

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

Cool


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