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37 votes

How is Alpha Zero "more human"?

Page 5 in the paper has your answer: ... AlphaZero compensates for the lower number of evaluations by using its deep neural network to costs much more selectively on the most promising variations - ...
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27 votes

How do FIDE rated players perform on lichess?

I went through the list of LiChess classical top 200 players and collected the FIDE ratings of LiChess classical ratings of anyone who I could verify on FIDE's website as actually having a FIDE rating:...
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27 votes
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Why have engines not increased top rated chess players' Elo?

I think they certainly have increased their ELO, but more importantly, their overall chess strength. ELO is only a rating relative to others in the pool so it may tend to go up more slowly if everyone ...
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  • 31.9k
25 votes

Would an ensemble of chess engines beat the best one?

The answer is "No". If you have a defined fixed set of resources - CPUs, memory, cache, etc. - and you allow one engine to have full use of them then that engine is going to be able to ...
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  • 75.7k
23 votes

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

A 99% win rate is winning 99% of games played. Carlsen does not win nearly that many games, since at top level most games are drawn. Carlsen's overall record in life is +1262 =1289 -454, which means ...
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  • 21.7k
21 votes
Accepted

Elo loss for resign vs checkmate

No difference whatsoever. As with tournament results, ELO (or Glicko, or any other chess rating system) counts all losses the same, all draws the same, and all wins the same. Doesn't matter if you ...
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20 votes
Accepted

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

ELO is not an absolute measurement; it is only meaningful relevant to the ELOs of other players. This is because it is only calculated based on performance against other rated players. The "Maximum ...
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  • 2,113
20 votes
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Are Elo Ratings Zero-Sum?

Between most players, Elo ratings are zero-sum. The formula for updating an Elo rating looks like this. Suppose player 1 and player 2 are playing a game. First, their ratings are used to generate a ...
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20 votes

Are chess players getting better, given the same rating?

How would say a 1700 rated player of say 50 years ago who is no longer .around go against a 1700 player of today? Speaking as a player who was around 50 years ago and was rated the equivalent of 1800 ...
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  • 75.7k
19 votes
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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?

There are actually three different distinctions in the USCF system that have to do with a 2200 rating. First is the National Master title. It is awarded to anyone who has ever had an established (not ...
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  • 7,388
19 votes

How is Alpha Zero "more human"?

Most strong engines emphasize looking very deeply, at the expense of having a superficial evaluation function. In the AlphaZero paper, they say that Stockfish looks at 70 million positions per second. ...
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18 votes
Accepted

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

Short answer: Neither Elo-ratings are not ajusted for calculation after each game, they are not adjusted after each tournament either. They are adjusted each month. For all games played during one ...
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  • 12.9k
16 votes

Would an ensemble of chess engines beat the best one?

No, an ensemble of chess engines won't beat the best one. The reason is simply because of hardware. Let's take the strongest CPU engines right now to keep things simple. These are Stockfish, Komodo, ...
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  • 21.7k
16 votes

Are chess players getting better, given the same rating?

Everybody seems to agree that "ELO inflation" is real (I found an article from 20 years ago claiming this exists)...except scientists. Here is a 2011 paper that vehemently denies the ...
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15 votes

What would be the elo of a computer program that plays at random?

Right at the bottom of the Computer Chess Rating List for the 40/4 time control is Brutus RND, an engine that simply selects random legal moves. http://www.computerchess.org.uk/ccrl/404/cgi/...
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15 votes

Why have engines not increased top rated chess players' Elo?

The question is apparently based on a misunderstanding of how ELO ratings work. There is absolutely no mechanism by which the overall increase in players' strength would lead to increase in their ELO. ...
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  • 1,506
15 votes

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

assuming this implies conservatively a win rate of 99% There are a number of wrong assumptions in your question. First, at elite levels where players don't often lose it is draw rates that are high. ...
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  • 75.7k
14 votes
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How to get to 2000 ELO rating

The best thing to train is (almost) always calculation: Get a set of maybe 1000 3-5 move combinations and go through those problems until you basically know them by heart. That's to enable pattern ...
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13 votes

How is Alpha Zero "more human"?

AlphaZero already seems to play like a regular "centaur" -> correspodence GM with an engine assistance. As an FM I'd get much more enjoyment of playing AlphaZero vs a regular engine. One comparison ...
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  • 959
13 votes

Are Elo Ratings Zero-Sum?

Are Elo ratings a zero-sum system in chess? No, they are not zero sum. There are two reasons for this. First of all, when a player first gets a rating then that is a pure plus. There is no ...
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  • 75.7k
13 votes
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How is it possible for a player without 2500 ELO to obtain the GM title?

A couple different ways: Winning a tournament like the World Junior or World Senior, which automatically confers a GM title to the winner Having a rating over 2500 after any game. This is to ...
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  • 7,388
13 votes

Is it possible to estimate my ELO without joining an organization or anything?

Puzzles are a notoriously bad estimator for ELO. (Tried myself, wild fluctuations.) You could run whole games by you through an engine (moar input => moar output) and check the accuracy of your ...
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12 votes
Accepted

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

This answer addresses one concrete portion of the OP; namely, for an arbitrary N > 0, what rating difference between Player A and Player B corresponds to Player A's expected score against Player B ...
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  • 23.1k
12 votes
Accepted

Elo disadvantage due to one pawn move in Indian Chess

Revised stockfish to skip searching double pawn push. Each engine is using 2 threads at TC 1m+1s. It got 4 draws in 20 games. Test 1 sf_no_pawnpush4 is not aware that its opponent can play a double ...
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  • 2,175
11 votes

Does elo rating have a limit?

No, Elo ratings have no theoretical limit. If Alice scored 76% against Carlsen (rating 2853) consistently, she would stabilize at a rating of 3053*, and if Bob scored 76% against Alice, he would ...
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  • 14.5k
11 votes
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Why, in online chess, is it that the shorter the time control, the higher the world leading elo is?

I think the key of this is number of played games. Nihalsarin2004 9440 bullet games konevlad 1113 blitz games Zhigalko_Sergei 257 rapid games Biranidun 84 clasic games
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10 votes
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Stockfish ELO vs search depth

There actually is an ambitiously worked out answer out there: http://web.ist.utl.pt/diogo.ferreira/papers/ferreira13impact.pdf On page 77 you get the relevant table: depth: elo: 20 2894 19 ...
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10 votes

How do FIDE rated players perform on lichess?

I am 2300-2450 on lichess blitz, while my FIDE rating is 2300-2350. There is a correlation but there is a large body of players on lichess that are not FIDE rated.
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  • 959
10 votes
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Where can I find a rarity table of chess player ratings?

According to the list downloaded here, there are currently 261782 players with a FIDE rating. I wrote a small program to analyze it, and here are the results: ------------------------- Rating Number ...
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  • 23.9k
10 votes

Should I join a chess club?

You should try it. Over the board chess is a very different experience, the social aspect is a lot of fun and the level of concentration required very different from online. Also there is no better ...
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