Magicwand wrote:for double kyu player who read some joseki book... it is much easier to play unconventional play that is not in joseki book.
i guess everything is trick play if they dont know how to answer.
But as I was trying to describe, I think there is a difference between a "trick play" and an "uncommom move". One perhaps not in the ordinary joseki books but:
1)A proper response could be derived logically from "principles")
or
2) While normally not an optimal move (by joseki) here the local disadvantage is compensated for by how the overall board is affected.
I would not consider a move "not book joseki" for either of those reasons a "trick move". We need to keep in mind that joseki means an equal division locally but go is a game played on an entire board. You could play joseki in all four corners with equal division of value, territory vs influence, and have a hopelessly lost game. But that advantage might also depend on a non-joseki move made in the final corner (local loss for larger global gain).