How does rating system work?

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How does the rating system work?

OGS uses glicko2 as rating system. https://en.m.wikipedia.org/wiki/Glicko_rating_system#Determination Here an approximation of how the rating system works: Each player has a rating (500-3500) and a deviation (indicated by ±) After one of your games ends, we take the last 15 games to calculate, how your rating has to change to better predict the outcome of those games. The difference of you rating and your opponents rating gives an estimation for how probable it is for each player to win the g…

Rating Drop After Win by Timeout

You can read the math behind Glicko2 here http://www.glicko.net/glicko/glicko2.pdf And this is the post introducing Glicko2 on OGS. It describes the OGS specifics. Have fun with it

OGS ELO and handicap

I searched the forum and found some interesting information on how the ELO calc inouts are determined by the ELOs at the time the game finishes, for example in a long run in correspondence game. I also saw on the wiki the reference to the use of Glicko formula for ELO. What I haven’t been able to see is how handicap plays into the system. For example if a game starts as even with two handicap but your opponent ends game having the same rating of you how are will ELO be calculated. Similarly if …

Sorry for answering with links, but to me it feels like I answered the basic questions hundreds of times (I cannot find my older/longer posts myself).

Of you have further questions, feel free to ask.