Game Completion Rate Faulty (?)

I've just noticed that my game completion rate is shown as 88% but I am unaware that I have failed to complete any game in the past few months. The few games that I have ever failed to complete due to bad connections have been very few and very far between and literally years ago.

So what gives?

Hello,

lichess.org/insights/TheGreatUnwashed/termination/date

Maybe check there ?

lichess.org/forum/lichess-feedback/game-completion-rate-15#4
I guess it's not only about disconnections.

It's based on your last (50?) Games I believe.

If u abandon a game at the start it counts as a abondoned game as far as i know.

@BlotterFan
@QEDemonstrandum

By coincidence I have played exactly 50 games recently (my others are from years ago).

None have failed to complete because of me. As far as I can remember TWO games were not completed: ONE a rated rapid game where the opponent aborted before the first move THE OTHER an unrated correspondence game where the opponent failed to move for several weeks and so the server called the end.

88% means that I have failed to complete 1 in 9 of my games. That is false.

BTW I know that the rate is temporary and "no big deal" -- but it seems to me that if it is falsely reporting my stats that a greater problem might be indicated.

FTR I have been flagged once in the 50 games mentioned, I failed to move in the 2 seconds that remained* -- that hardly counts as failing to complete.

*annoying really because oppo only had 0.4 seconds left.

Yesterday I played 6 games -- all completed. My Game Completion Rate changed from 88% to 89%.

This is incoherent with the idea that the GCR is measured over 50 games or (as I have seen suggested elsewhere), if it is measured over 30 games.

I have come to conclude that the GCR is a random number between 0 and 1, signifying nothing :(

I would love it if some mod or other person with access to the underlying data could tell me when I failed to complete any game.

AFAIK, the GCR is calculated from your last 30 losses.
You have only 17 losses since you came back from a long break, so your completion fails from "literally years ago" still count.

Thanks @sheckley666, that could explain why it is anything but 100%.

Still:
26/30 = 87%
27/30 = 90%

Where the hell do 88% and 89% come from? Is it some sort of weighted average?