I’ve been feeling terrible for the past week, didn’t have much progress, but the investigation of the kyu ranking would still continue, just take a bit longer.
Here is the oldest known game I found that definitively involved a player that has a weaker rank than a Hoensha 9k (1d). The 9k player 佐藤民之助 gave 2 handicaps to an unknown player and still won. And this put the black player at a strength of Hoensha 11k according to their ranking system.
transcribed record below:
What do you all think about the black player’s strength? On par with a modern high SDK player?