Marco Scheurer wrote:
This should be easy to check by looking at the strength of other players they managed to beat. (Assuming those NR's are not "guestxxx" and occasionally play rated players.)I am attaching a histogram of player strength for the games in question, translating IGS ratings as NR = 0, 31k = 1, 30k = 2, ... 1k = 31, 1d = 32, ... 9d = 40, 1p = 41, ... 9p = 49.
I'm not sure you can assume that NR are weak players. I remember reading a comment by Tweet that many NR players on IGS were pro.