Comment by zmgsabst

7 hours ago

Joseki are akin to book openings in chess, eg, we routinely see players going 20+ moves entirely from AI prep.

The trouble is that in chess, if one player deviates significantly that can often still mean they have a playable (perhaps slightly worse) position which has to either be memorised or understood on the spot, which can be really difficult. The main line is not the only playable line.

Is this also the case for Go's joseki? Or is any deviation easy to punish?