My thought process
Looking at all the green koans I thought I saw a lot of bamboo joints. Then I realized I was looking at bamboo joints with opposite colors, and also 100 was a counterexample. So, considering what 100 had in common with the others, I thought of simplifying it to just a keima approach.
Then looking them all over again this comment was particularly amusing:
Since just checking it was pretty hard, I assumed that was a secret joke about how carefully Vsotvep had to construct it. I didn’t realize he had a new Go variant in mind!
…
Turns out that was just a UI limitation, and RubyMineshaft made it easy enough. Open the console and type:
setSize(8)
I don’t quite understand how this tool works though. Is there a way to copy the image without changing its number? Also can we somehow reset the numbers to start a new game?
I have a rule in mind if/when we’re ready for another one.