From the 27M OGS Dump, these are games that lasted more than 24 hours.
1’096’544 ranked games on 19x19 board.
Longest game was 1811 days.
As you can see the curve is very flattened after about 200 days.
Here is the detail for first 30 days.
Looks like there’s a peak at 3 days and the rest of the curve is quite smooth.
This is quite different from chart linked by @Allerleirauh , I don’t know why.
This is when we pick only ladder games (game name contains “Ladder challenge”): 146’352 games.
This is for tournament games: 393’297 games.
The big picture is the same: a peak at 3 days.
I’m quite suprised by this result. It seems like there’s a lot of fast correspondence players which are able to complete a correspondence game in three days!
I’m asking myself if I’m doing it wrong… 