One question coming to my mind, is it because there is so much pollution that OGS don’t have a leaderboard with players rating classification? I mean most go servers have this.
I think if you take into account that some part of the site has existed for ~16 years and other aspects of it ~8 years maybe it’s not so surprising that one can have a lot of accounts registered but not all of them active.
I do trial and error, change the number to say 950000 and see if it is an actual profile or an empty page. Then try 25000 back or forth and check again.
I’m sure there’s a smarter way tho
As numerous people have opined, including Redmond, the difference between the professional ranks has decreased over time.
Consider Match Handicap System at Sensei's Library – nearly a century ago, in 1924, a Nihon Kiin 7p was expected to be able to give a 2p two stones. Modern professionals would find this laughable.
The fact that professionals no longer play each other with handicap simply because of having different ranks indicates that there is less than a stone difference between the typical 1p and the ordinary 9p.
I remember the long-time Go teacher shygost, when he was on Clossius’ stream, commenting that when he began teaching in the '70s “there was a real difference between a 1p and a 6p”, that difference having presumably now largely eroded away.
To clarify, it’s my opinion that there are at least two stones difference between the very strongest and very weakest active professionals, and perhaps three or even four depending on how one defines “active” and “professional”.
My issue is with to what extent professional strength correlates to rank.
I’m sure its been mentioned elsewhere that the pro rank is more a mark of achievement than it is a measure of strength. The two correlate in that one expect someone with a lot of wins in domestic or international tournaments to be stronger than someone without but that doesn’t mean a new and upcoming world champion thats 1p or 2p isn’t stronger than a retiring 9p.