I managed to download the full JSON dataset from @za3k OGS database dump…
…and to reduce it at a convenient size to calculate some stats on it.
I’ve been able to convert 27085332 records. I may have lost some, I hope less than 2000.
There are 26935658 OGS games and 149674 uploaded SGF.
I’m going to focus on OGS games only, since SGF are less interesting for me and they may have weird data (as an example, someone uploaded some SGF apparently with huge boards: 100x100, 666x666, 1000x1000).
Here is my first bit: which boards were used on OGS?
I already did that analysis on a small sample
but here is the full monty!
Apparently there still are some unesplored places on this map!
Here is the result when we remove standard boards (9x9, 13x13 and 19x19):
Top choice is 5x5.
I’ll update this thread when I have something new to share.