A number that approximates a player's skill. The actual meaning of the number depends upon the issuing organization. Common issuers include the USCF and FIDE.

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142 views

Does memorizing chess games improve chess ability?

It is common for strong chess players to have chess games in memory. Is this because it helps to memorize chess games?
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51 views

Why the ratings used for different time controls are different?

The FIDE assigns a player not one but three different ratings: For classical games featuring long time controls, that is, 90 minutes for the first 40 moves + 30 minutes for the rest of the game + 30 ...
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1answer
166 views

What is the Elo rating of a chess computer that can only look 1, 2, 3, … moves ahead

Has anyone calculated the average Elo rating of a chess computer as a function of the number of half moves or plys ahead it can look. I realise that the Elo is also a function of the choice of move ...
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2answers
766 views

What is the Elo of a player who is half as good as another player?

You often hear players refer to others as half as good as me, while they have the same Elo. Is there a formula to measure this? It must take in account that being half as good as Carlsen, for example, ...
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5answers
747 views

How to update Elo rating?

I'm building a chess app which will have a Elo rating system. Would it be more appropriate to update player's rating based on their rating at the beginning of the game, or their rating at the end of ...
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3answers
435 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 ...
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2answers
228 views

Is FIDE president Kirsan Ilyumzhinov a good chess player? What's his Elo rating?

On this page it says he is not rated: http://ratings.fide.com/card.phtml?event=34123811 I could only find one game featuring Ilyumzhinov, in which he played a 2300 Elo player and lost: ...
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128 views

how large can a rating difference become before either player realizes it's not worth engaging in a game?

I think the relationship changes as rankings increase (i.e., players with ratings lower than 1000 might be able to play all other players in that range and still enjoy themselves, but if a sub-1000 ...
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1answer
174 views

In the USA, if you achieve a USCF rating of 2200 and gain the National Master title, what happens if your rating then goes below 2200?

Is the "National Master" title awarded for your entire life? Or do you lose the title if your rating goes below 2200? I've heard that to get the title of National Master for your entire life you have ...
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2answers
156 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 ...
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1answer
124 views

How to get a license to have an Elo rating in USA

Which link should I follow to get a license in order to have an Elo rating in the USA?
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215 views

Is it possible to improve the Elo rating system like this?

Since all chess player’s ratings are between 800 and 2900, why don’t we make a new rating defined like this: New rating = (Old rating – 800) / 2.2 So that all chess player’s ratings would be between ...
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2answers
1k views

Is it theoretically possible for Carlsen to reach Elo 3000?

Magnus Carlsen just reached a rating of 2889.2 today. Considering the way that Elo works, inflation and deflation and relative strength of Carlsen, I was wondering whether it is theoretically possible ...
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2answers
392 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.
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3answers
128 views

Rate the difficulty of this computer?

I've just been playing for fun online a little bit, and was wondering how hard the computer I've been playing against is. NOTE: This was made for a javascript competition, and doesn't include ...
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5answers
637 views

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

Edit (3 March 2014): 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 ...
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1answer
101 views

Elo points after game completion

When playing an opponent and winning, are the points taken from the opponent's Elo at the beginning of the game or end of the game? For example, I may play someone who begins at 1900 and is at 1600 ...
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1answer
404 views

Conversion of Shredder elo rating to FIDE elo rating?

Can anyone provide a simple formula to convert the elo rating provided by the chess program Shredder to actual FIDE rating. I am only looking for an approximate formula, maybe something like: ...
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1answer
498 views

Can you estimate a player's Elo rating using tests?

So I wonder if there are specific positional/tactical tests for every rating range, so that in the end the general rating of a player can be decided prior to competition.
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3answers
961 views

FICS rating vs FIDE Elo

I know that is hard to establish an exact equivalent, but I was wondering what is the factor P in this equation: FICS_BLITZ_ELO * P = FIDE_ELO following personal experience. I mean, if you use to play ...
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2answers
109 views

How can I find the gained points per game?

In another post it was written that for games played during the 2013 World Championship match, Carlsen gained 3.7 points if he wins, Anand gained 6.3 points if he wins, and that in a draw Carlsen lost ...
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1answer
611 views

Chess Hustlers in the Park/Street: Where do they place in terms of skill?

Assuming the species still exists, has anyone researched this enough to provide insight into their approximate rating class/skill level (exclusively at blitz time controls)? How do they typically get ...
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2answers
286 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 ...
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4answers
1k 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 ...
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4answers
866 views

What are some good tactical opening moves?

I have been playing chess for about an year now. But, I am unable to get past 1300 USCF rating. There are three phases in a chess game: opening phase, middle-game phase and end-game phase. When I get ...
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5answers
843 views

How to check Elo?

I am an amateur player and from time to time I like to play chess. Is it good to start playing against a computer and try to find an Elo setting where the amount of wins and losses I score is roughly ...
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2answers
543 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: ...
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2answers
186 views

Comparing ELO ratings between different countries

I've noticed (empirically) that American players tend to be weaker than Israeli players with comparable non-international ratings. Is there a tool for converting one country's Elo rating to that of ...
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1answer
620 views

How long to get a 200 rating point increase from serious chess study alone according to this academic paper?

In the academic journal article "The Role of Deliberate Practice in Chess Expertise" from APPLIED COGNITIVE PSYCHOLOGY Appl. Cognit. Psychol. 19: 151– 165 (2005) At the top of page 162, the authors ...
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7answers
3k views

Most effective way to achieve a 2000+ rating in one year, starting as a 1600?

I currently play at around a 1600 level, and have stagnated in terms of rating improvements for quite some time. I have always played chess recreationally, occasionally doing tactics puzzles here ...
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2answers
234 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 ...
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4answers
5k views

What's the average Elo rating? What's the average USCF rating?

Not sure if there exists an average, but what could be considered an average rating range in these systems?
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1answer
288 views

Are there any (free) programs that utilize Chessmetrics or Glicko-2?

I'm looking for a program that is capable of keeping track of player ratings while taking in the game data, and hopefully outputting rankings based upon those ratings in some form. I've found ...
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1answer
628 views

The number of levels in chess

Consider a weak chess player who has just learned how the pieces move and who will lose to a Scholar's Mate. (We can say that he's male and call him "Mr. Newcomer".) Let's define Mr. Newcomer's level ...
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2answers
195 views

What type of tournament is needed to get a true chess rating?

I'm at the point I'd like to throw my hat in the ring and see what happens. What is the most basic and affordable tournament I should be looking at that still counts for a rating? Would that be FIDE? ...
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4answers
3k views

Are the best engines better than the best humans?

I think the title asks it all. Under match conditions, would the best chess engines routinely beat the best grandmasters? If you say yes, have there been enough matches played under tournament ...
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3answers
328 views

Going from Expert to Master

What is the difference in mindset or technique that really makes the difference between an expert and a master? I am trying to decide whether or not to start playing again and try to make that leap.
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2answers
498 views

How many FIDE-rated games must be played to obtain a *non* provisional rating?

I have a provisional FIDE rating of 1980 based on my score of 1 (two draws) out of 4 at a FIDE-rated tournament earlier this year; see: http://ratings.fide.com/card.phtml?event=2059100 where ...
13
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4answers
1k views

Has there been much research on rating inflation?

Magnus Carlsen's draw in yesterday's round of the 2012 London Chess Classic assured that his rating in the next published FIDE rating list will surpass Kasparov's previous record of 2851. I've ...
12
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1answer
205 views

Free chess match database

I'm working on a rating/ranking algorithm and I'm finally at a point where I can test some hypothesis but in order to do so I need real data. To be honest almost any board game could be used for this ...
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3answers
308 views

The Historical Comparison of Players

Arpad Elo described (chess life 1962) his ratings as "the measurement of the position of a cork bobbing up and down on the surface of agitated water with a yard stick tied to a rope and which ...
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1answer
69 views

Team Tournament Rating Strategy

In high school I played on a chess team, but that was fairly straightforward because there were no rating restrictions for teams. Every team just grabbed the 5 strongest players and then ordered them ...
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3answers
481 views

What is the strength of the Shredder Chrome app?

Today, for the first time, I played against the Chrome app Shredder Chess, and at the "Hard" playing strength of the engine, I was easily able to beat it. I am just about 1850-1900 Elo. My question ...
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3answers
2k views

Is there any software or web service for club-level Elo ratings?

Is there any software (or web-based service) that allows you to keep track of local, club-level Elo ratings? These ratings would not have any connection with official Elo ratings, it would be just ...
11
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1answer
2k views

What does ELO stand for?

What does the acronym ELO stand for, as in the ELO rating system?
7
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1answer
634 views

Is there chess software to play against that rates your skill through actual games?

Is there chess software out there that will try and rate your play? I vaguely recall an old Chessmaster software that did something similar, though by having you play through puzzles. I was looking ...
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2answers
134 views

Weighted adjustment for relative Elo

I was looking at my biggest upsets the other day and realized that the result was unsatisfying. Most of them were 500-600 point upsets when I was still really low rated (i.e. 800 beating a 1300), ...
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1answer
476 views

When was the term 'Super Grandmaster' first used?

According to the following wiki link, The unofficial title, "Super Grandmaster", is often used by players to refer to those with a 2700+ rating to distinguish the most serious world champion ...
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1answer
633 views

Glicko-2 Rating System: Bug or exploit?

I originally had this posted on StackOverflow as it could be a bug in the implementations, but some suggested I post to math. I just found this stackexchange, and I thought who better? Some of you may ...
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1answer
129 views

How has the Grandmaster title evolved?

The wikipedia article is a good starting point, but I'm also interested in how the specific regulations have changed over the years. Currently, 3 norms must be achieved1 in tournaments that adhere to ...