I remember a bit back the Go server that I play most of my go these days [OGS](https://online-go.com https://online-go.com) changed their ratings from Elo to Gl

I remember a bit back the Go server that I play most of my go these days [OGS](https://online-go.com https://online-go.com) changed their ratings from Elo to Glicko-2. You can read their rationally for it in this forum: https://forums.online-go.com/t/ogs-has-a-new-glicko-2-based-rating-system/13058 https://forums.online-go.com/t/ogs-has-a-new-glicko-2-based-... The key takeaway is this: > Most of the shortcomings [of Elo] can be traced back to the fact that the system is too slow to find a player’s correct rank, and too slow to adapt when jumps in strength occur. > The problem of slow moving ratings is a well-known problem with Elo implementations. In response to this, Prof. Mark Glickman developed the Glicko, and later Glicko-2, rating systems which address this problem very well and are fairly widely used A few weeks ago they then made an update to their implementation of Glicko-2, where—during the announcements they summarized many interesting statistics on how the system has panned out for them: https://forums.online-go.com/t/2020-rating-and-rank-tweaks-and-analysis/28649 https://forums.online-go.com/t/2020-rating-and-rank-tweaks-a...