Hello fellow lichess players,
Today we moved from ELO to Glicko2 for our rating system.
Glicko2 is a more complex but superior algorithm to calculate players relative strength. It's actually used by most serious chess organisations, like FICS.
As a result, all your rating history has been rewritten.
Please note that in the Glicko2 system, the default rating is 1500. So in average, lichess player ratings are now 300 points higher than before. And so they are now closer to the ratings that can be seen in other organisations.
Today we moved from ELO to Glicko2 for our rating system.
Glicko2 is a more complex but superior algorithm to calculate players relative strength. It's actually used by most serious chess organisations, like FICS.
As a result, all your rating history has been rewritten.
Please note that in the Glicko2 system, the default rating is 1500. So in average, lichess player ratings are now 300 points higher than before. And so they are now closer to the ratings that can be seen in other organisations.