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Any particular reason why lichess rating is sooomuch higher/differnt from FIDE??

#31

Obviously the correlation is highest in blitz but that was not what I was discussing. There's not really any assumptions in what I said. My point is just that different time controls have different rating pools so anyone here trying to say that there is one constant difference between Lichess and FIDE ratings is incorrect. My comment was directed at posts like #7.

Obviously the correlation is highest in blitz but that was not what I was discussing. There's not really any assumptions in what I said. My point is just that different time controls have different rating pools so anyone here trying to say that there is one constant difference between Lichess and FIDE ratings is incorrect. My comment was directed at posts like #7.
#33

Inflation happens only if there is specific reason. FIDE pool is having very little drift as only small amount of people entering the pool vs. amoutn people already in the pool. Lichess is another case. Since there is huge amount of people entering the pool all the time which make median of any pool drift to 1500. whether it inflates or deflates.
But inflation explaind nothing no one ever intended ratings to match hence it woudl be a miracle if they match

Inflation happens only if there is specific reason. FIDE pool is having very little drift as only small amount of people entering the pool vs. amoutn people already in the pool. Lichess is another case. Since there is huge amount of people entering the pool all the time which make median of any pool drift to 1500. whether it inflates or deflates. But inflation explaind nothing no one ever intended ratings to match hence it woudl be a miracle if they match
#34

Rating inflation here is huge. In rapid 1800 on lichess is 1400 on chesscom. One year ago it was 1600 lichess = 1400 chesscom. In 2016 the ratings were almost the same on both sites.

Rating inflation here is huge. In rapid 1800 on lichess is 1400 on chesscom. One year ago it was 1600 lichess = 1400 chesscom. In 2016 the ratings were almost the same on both sites.
#35

@pointlesswindows yes different pools have different numeric values for same skill. That is not inflation. One us dollar is more that 100 yen. It does not mean yen is inflated just that they have differet value. Actually yen deflated. Inflation and deflation refert to change of value. At no point of time anyone intended lichess 1500 be same as chess.com 1500 or FIDE 1500. If they happend to be on different value that feature of rating system not inflation.

Lichess probably had actual inflation last spring as there was huge influx of new players most of them weaker than lichess 1500.

lichess and chess.com probably get on average people of same strength and since initial rating of chess.com is 1200 and lichess 1500 it makes few hundred points of difference between the two..

@pointlesswindows yes different pools have different numeric values for same skill. That is not inflation. One us dollar is more that 100 yen. It does not mean yen is inflated just that they have differet value. Actually yen deflated. Inflation and deflation refert to change of value. At no point of time anyone intended lichess 1500 be same as chess.com 1500 or FIDE 1500. If they happend to be on different value that feature of rating system not inflation. Lichess probably had actual inflation last spring as there was huge influx of new players most of them weaker than lichess 1500. lichess and chess.com probably get on average people of same strength and since initial rating of chess.com is 1200 and lichess 1500 it makes few hundred points of difference between the two..
#36

Money inflation is obvious, but it's a chess not an economic forum. Let me repeat that on lichess the rating inflation is huuuge and it's growing. What I say is based on my years of experience playing online, and I showed true ratings, no arguing here, it's facts.

Money inflation is obvious, but it's a chess not an economic forum. Let me repeat that on lichess the rating inflation is huuuge and it's growing. What I say is based on my years of experience playing online, and I showed true ratings, no arguing here, it's facts.
#37

The main reason is simple. Lichess uses a different model than FIDE. That's why you can't equate the ELO and the Lichess rating. That's why a rating has no unity. The same is true for national rating systems like the DWZ of the German Chess Federation.

The main reason is simple. Lichess uses a different model than FIDE. That's why you can't equate the ELO and the Lichess rating. That's why a rating has no unity. The same is true for national rating systems like the DWZ of the German Chess Federation.
#38

to #31, I'm not saying the contrary, I'm just putting a table which has been based on actual players and true, the pool of players is extremly different between 90+30 and 5+0. Some players are just monsters at blitz but terrible at slow games and the inverse thing happens as well. I know some players who are rated 2000+ in slow time control but are rated 1700 in blitz and some other players are rated 2400/2500 blitz bullet but are 1900 classical. And the classical time control on lichess does NOT reflect the official fide's time control (90+30). Even amongst slow players, some are very good at 30+0 or 25+0 but would achieve terrible results in "normal" time format. So if you want a more or less accurate approximation of your FIDE rating, start playing 1h games or more

to #31, I'm not saying the contrary, I'm just putting a table which has been based on actual players and true, the pool of players is extremly different between 90+30 and 5+0. Some players are just monsters at blitz but terrible at slow games and the inverse thing happens as well. I know some players who are rated 2000+ in slow time control but are rated 1700 in blitz and some other players are rated 2400/2500 blitz bullet but are 1900 classical. And the classical time control on lichess does NOT reflect the official fide's time control (90+30). Even amongst slow players, some are very good at 30+0 or 25+0 but would achieve terrible results in "normal" time format. So if you want a more or less accurate approximation of your FIDE rating, start playing 1h games or more
#39

@Zeyecx different system explains very little. underlying model which being estimated i.e. the logarithmic values on underlaying generalized Bradley & Terry model is pretty much the same. Just algorithm for estimation is different Like if numerically solve equation it is not really imporatant whether you use newton method or secant method you still get the answer just that one them is faster.
Why every pool has different values: SImply no systme measures you chess ability directly just the performanc against other players. If bunch of grandmaster would start they own private copy of lichess then the rating of average gransmaster in that lot would be 1500. similarly if bunch of pre school kids would start private server they median rating would again ne 1500.

So lichess rating is mapping of median player level and starting rating. That is for glicko type of algorithms. Elo would be different on initial rating assignement. This easily observed if you look at rating distribution of lichess https://lichess.org/stat/rating/distribution/blitz regardless the timelimit you look at median is at 1500. and will remain so as long as there is big enough influx of new players. Actually if it would remain there also in case there is no new players as rating system is almost zero sum game when players have roughly equal RD. So even if all player would reas "the best chess book ever" and gain about 100 points of playing strength the ratings woudl not change one bit.

@Zeyecx different system explains very little. underlying model which being estimated i.e. the logarithmic values on underlaying generalized Bradley & Terry model is pretty much the same. Just algorithm for estimation is different Like if numerically solve equation it is not really imporatant whether you use newton method or secant method you still get the answer just that one them is faster. Why every pool has different values: SImply no systme measures you chess ability directly just the performanc against other players. If bunch of grandmaster would start they own private copy of lichess then the rating of average gransmaster in that lot would be 1500. similarly if bunch of pre school kids would start private server they median rating would again ne 1500. So lichess rating is mapping of median player level and starting rating. That is for glicko type of algorithms. Elo would be different on initial rating assignement. This easily observed if you look at rating distribution of lichess https://lichess.org/stat/rating/distribution/blitz regardless the timelimit you look at median is at 1500. and will remain so as long as there is big enough influx of new players. Actually if it would remain there also in case there is no new players as rating system is almost zero sum game when players have roughly equal RD. So even if all player would reas "the best chess book ever" and gain about 100 points of playing strength the ratings woudl not change one bit.
#40

My rating here is just over 2000 in anything above 1 min. On cheese.com it's like 1700?
I just played 300+ tactical puzzles over at cheesebase.com and got up to strong amateur with a 2100+ rating.
I think that I am stronger tactically but weaker positional wise and without current opening knowledge.

My rating here is just over 2000 in anything above 1 min. On cheese.com it's like 1700? I just played 300+ tactical puzzles over at cheesebase.com and got up to strong amateur with a 2100+ rating. I think that I am stronger tactically but weaker positional wise and without current opening knowledge.

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