There is a bug on B site where if you put the bomb under the gap between the tree and the benchs bots will not be able to defuse. ( here is a picture of the spot https://steamhost.cn/steamcommunity_com/profiles/76561198007461145/screenshot/447365654003940860 )

Another thing I found was the nav mech on B site was very hard for bots. more than once i found bots stuck in places and I was able to move into the area unoticed by them. I even used this to defuse the bomb once.


I'm no master at cs map making but maybe this video will help you understand nav mechs and how bots move in cs.

https://www.youtube.com/watch?v=6R_iuiRMUS4