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Questions tagged [elo]

Use when the question is ABOUT the Elo rating system not when it mentions Elo

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15 votes
6 answers
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What would be the elo of a computer program that plays at random?

What would be the Elo of a computer program that plays random moves? For the sake of simplicity, assume that he never asks for a draw or resigns and never accepts a draw offer.
fotipute's user avatar
  • 175
8 votes
4 answers
4k views

Why do women have a lower Elo requirement to obtaining (women) FIDE titles?

As well as FIDE norms, you need a certain Elo to obtain a certain title. Women need around 200 points lower Elo to obtain the analogous women's only title: Grandmaster (GM) 2500+ International master ...
user avatar
8 votes
4 answers
5k views

What would be the Elo rating of a computer which plays all optimal moves?

What would be the Elo rating of a computer which plays all optimal moves? By playing all optimal moves, I mean that it always wins if possible, or else draws if that is the best result possible.
badmf's user avatar
  • 183
10 votes
5 answers
11k views

How to get to 2000 ELO rating

I'm a 1800 chess player. I know pretty much all the basics in every fields of the game. I know the main lines of openings, I know tactics, I know end game. Average in all of it (=1800 player). I ...
Sebastien FERRAND's user avatar
8 votes
4 answers
1k views

Is a team of GMs stronger than a single super-GM?

For example Magnus Carlsen is currently the world number 1 and favourite to win a match against any other player in the world. (Similarly for Wesley So in chess960.) Is he also favoured to win a match ...
Allure's user avatar
  • 28.3k
1 vote
2 answers
2k views

For long OTB games, what is the percentage of players who have a rating which is below X FIDE Elo?

I am looking for statistics on the FIDE Elo of chess players. I would like to know what is the percentage of players who have a rating which is: Below 1000 Elo Below 800 Elo Below 600 Elo Below 400 ...
Fate's user avatar
  • 4,904
8 votes
2 answers
9k views

How does a chess engine mimic an Elo rating

I am a fairly new chess player (say 1400) and I would like to play against Stockfish and win some of the time. If I change the strength to 1400 then what does the algorithm actually do ? Does it make ...
Dom's user avatar
  • 511
8 votes
3 answers
6k views

Elo distribution

In some online chess platforms you can see the Elo distribution of the players. It usually has Gaussian form. Is there somewhere where you can find the distribution of the classical Fide Elo?
SharkCaller's user avatar
7 votes
2 answers
28k views

Starting elo rating at chess.com

I am confused about the starting elo rating of new members at chess.com. Most of them start at 1200 but some of them have 800, 1000, 1400, 1600 or even 1800. How is it decided what is the initial ...
hough's user avatar
  • 71
7 votes
3 answers
9k views

How do you calculate elo?

I am starting a chess club at my school, and I want to create a Python program to calculate and store Elo ratings for each player. I am confident I can program it, but I just need to know: How do you ...
Aric's user avatar
  • 2,091
7 votes
3 answers
3k views

How to calculate the FIDE Percentage Expectancy Table

Section 8 of the FIDE Rating Regulations provides the following table I understand that dp=800 and dp=-800 are arbitary caps at the top and bottom of the table. However, in relation to the other ...
clp's user avatar
  • 275
0 votes
1 answer
540 views

What is the mean and standard deviation for men's and then women's standard FIDE ratings for those 2000 and above?

From this answer, the unconditional means and standard deviations are Female Mean = 1505, standard deviation = 339 Male Mean = 1675, standard deviation = 346 What about the case for ratings of 2000+ ? ...
BCLC's user avatar
  • 2,200
45 votes
11 answers
24k views

How is Alpha Zero "more human"?

I have a possibly naive question about AlphaZero. I have seen it described as playing in a "more human" style than other computers, but whatever it does, it gains about 100 ELO points by doing it. ...
Philip Roe's user avatar
  • 8,686
27 votes
5 answers
8k views

Are chess players getting better, given the same rating?

Chess ratings are a relative thing at a particular time, just like boxing. It is not absolute, compared to weightlifting for example, in which the records keep getting broken. How would say a 1700 ...
Autistic's user avatar
  • 399
21 votes
1 answer
5k views

Are Elo ratings adjusted after each match, or after each tournament?

I'm aware that the FIDE ratings list is only published once per month. I'm interested in how often the ratings are recalculated internally to FIDE without being published. Are ratings adjusted match ...
Myungjin Hyun's user avatar
17 votes
2 answers
11k views

Why is Magnus Carlsen's Elo rating not higher, given that his win rate is so high?

Magnus Carlsen's Elo rating is about 2870, and according to this quora answer, he hasn't lost a game in 100 games at the time of writing. Assuming that his win rate hasn't changed since then, and ...
user56834's user avatar
  • 344
12 votes
7 answers
5k views

Why not use computers to evaluate strength of players?

A computer like Stockfish can evaluate the rating performance of individual players based on a game. Why don't we take the average rating evaluation of a player's games to measure the player's ...
Unipolar Personality's user avatar
11 votes
1 answer
3k views

What are FIDE really hoping to achieve by the proposed rating changes from January 2024?

FIDE have published a new article: FIDE seeks public discussion about proposed rating changes. They say: In the past decade, certain innovations have caused rating deflation, a concern that has been ...
Brian Towers's user avatar
  • 100k
10 votes
3 answers
47k views

Is there a list of approximate Elo ratings for each Stockfish level?

I want to create something that will select an appropriate Stockfish difficulty setting automatically given the player's rating. The straight Stockfish v11 that I've downloaded has 20 difficulty ...
day's user avatar
  • 211
10 votes
5 answers
11k views

How to automatically evaluate a player's performance in a game?

Suppose I have a completed game. I don't have Elo ratings of the players. My purpose is to evaluate a player's performance in the game based solely on his moves. Can this can be done automatically ...
Dennis Golomazov's user avatar
10 votes
2 answers
5k views

How is it possible for a player without 2500 ELO to obtain the GM title?

I recently came across a GM who has a peak rating 2495 and has obtained the GM title after completing three norms. From my understanding, in order to become a GM one must Achieve a FIDE rating of ...
cmgchess's user avatar
  • 2,778
9 votes
6 answers
5k views

Is there a software to measure a player's strength based on a game?

I flicked through some papers that described how one can obtain an ELO estimate based on a game. (Basically we were comparing players' moves to the best moves suggested by a strong chess engine. My ...
Novellizator's user avatar
9 votes
2 answers
1k views

Why has Carlsen's Elo not changed?

Just looking up Carlsen's Elo and it is still 2870. I know his next goal is to reach 2900. Did the 3 wins in the world chess championship simply not give him any rating points, or does FIDE take a ...
Jeff Davis's user avatar
  • 1,732
7 votes
1 answer
750 views

How rating changes happen for tournaments starting near the end of the month?

For simplicity I will try to explain my question with a real example. The 28th Abu Dhabi International Chess Festival - Masters was held from 2022/08/17 - 2022/08/25 and therefore the ratings changes ...
cmgchess's user avatar
  • 2,778
7 votes
2 answers
866 views

Rating calculations for Anand-Carlsen world championship

I have some interesting questions that have to do with the rating changes and calculations for the Anand-Carlsen world championship. First, some preliminary information: Carlsen's live rating: 2870,...
user avatar
6 votes
1 answer
265 views

How relevant is historical performance for Elo rating?

How far back are results of matches relevant for Elo purposes? If a player wins a few early matches then they will earn less points for later wins than if they'd lost those early matches. In the end ...
Laska's user avatar
  • 13.4k
6 votes
3 answers
2k views

How does Elo rating gain scale with games played?

I only take two players starting out at 1500 Elo and have them play against each other with one player winning all games. Also I leave out any artificially introduced cut-offs. So the winner is ...
user1583209's user avatar
  • 20.9k
6 votes
1 answer
623 views

Can a 2000 Elo rated player teach me middlegame play properly?

I have reached 2500 in the chess.com tactics trainer while I haven't study theory and my FIDE rating is 1637 (I reached 1930 in rapids a year in France). I want to study with a coach and there is one ...
user avatar
5 votes
3 answers
7k views

Lichess vs Chess.com ELO system and player strength

So I usually play on Lichess now a days while my friend plays on Chess.com. He keeps telling me that Chess.com is harder and has more players and more serious players, therefore the games are harder ...
hexaquark's user avatar
  • 930
5 votes
7 answers
3k views

How well does Elo rating estimate a player's strength?

Proposal: strength is the real and rating is the model that estimates it. Question: How well does Elo rating estimate a player's strength? Bonus question: What happens if you take the player's rating ...
user avatar
5 votes
2 answers
552 views

Distribution of Elo ratings

Danger! Only for math buffs! As we all know, Elo is Gaussian. In theory. Except it isn't. But my question is not about that distribution. Your Elo might also list a second number: the number of ...
Hauke Reddmann's user avatar
5 votes
2 answers
957 views

Deciding on an n-variable for an Elo rating system

I have recently been looking into the mathematics behind the Elo rating system and its application to areas other than chess. I can understand almost all of it but I'm having a problem finding out the ...
DTR's user avatar
  • 3,139
4 votes
2 answers
110 views

Creating program for finding top players with respect to elo and age

I want to create a program for personal use but also maybe for publishing it on the web, in order to detect the top players with respect to elo and age. There will be two cases: A) In this case, ...
nwo's user avatar
  • 373
4 votes
4 answers
574 views

Absolute strength and stability of Elo

Not sure how to phrase this... I am aware that Elo measures the relative strength of players. Let's assume for this question that there is such thing as an absolute strength in chess and that players ...
user1583209's user avatar
  • 20.9k
3 votes
0 answers
298 views

"Variance" of Elo rating

What is the quantitative predictive value of Elo rating for tournament performances? (Or, same, what is the natural strength variabitity of an average player, measured in Elo?) A quantitative version, ...
Hauke Reddmann's user avatar
3 votes
4 answers
12k views

Chess engine with an ELO of less than 1800

I am looking for an UCI compatible engine with an ELO of less than 1800. Not a version of Houdini or Stockfish with an ELO of 1800. I want a engine with a real ELO rating of 1800 or less. If you can ...
MikhailTal's user avatar
  • 3,279
2 votes
2 answers
431 views

Experience of big difference between Elo and national rating?

I was just wondering if others have experienced big differences between players Elo and their national rating? Currently I am playing a tournament outside of my own country. The tournament is Elo ...
zaifrun's user avatar
  • 227
2 votes
4 answers
680 views

ELO rating and experience

I was looking at many players' ELO over time graphs and noticed something interesting. Usually players stay in the same 200-300 bracket through very long periods of time (I'm talking decades here) ...
Moti Korets's user avatar
2 votes
4 answers
453 views

What sets the absolute value of players' Elo rating?

I understand that the way the Elo updating process works, if player A has a 66% chance of beating player B, then A's Elo rating will converge to be 100 higher than B, and so forth for 74%, ... etc. ...
user56834's user avatar
  • 344
2 votes
2 answers
154 views

In online correspondence chess, are the ratings adjustments based on the pre- or post-game ratings?

When playing rated online correspondence chess, it's quite possible that the players' ratings change during the game. When the game is over, which rating will be used for rating adjustments? The ...
lindelof's user avatar
  • 549
1 vote
3 answers
262 views

Are Elo ratings comparable across history?

It is fun to speculate how the great players of today would fare against those of the past. With the advance in knowledge of the openings, particularly aided by computers, a leading modern player ...
John Bentin's user avatar