Probably better to link here: https://en.wikipedia.org/wiki/Go_professional#Discrepancies_among_professionals https://en.wikipedia.org/wiki/Go_professional#Disc

Probably better to link here: https://en.wikipedia.org/wiki/Go_professional#Discrepancies_among_professionals https://en.wikipedia.org/wiki/Go_professional#Discrepancies_... The difference between an amateur 2D and 9D is not the same as the difference between a professional 2P and 9P.