Hullo Im trying to get into running this game, and my first run id like to do is gate B ending 1 SSI, but the 1st place person does a thing in 106 pocket dimension and I don't quite understand how it works. How do they know what paths to take to get to the 106 room? Any help is appreciated.

Strange Bottle has 1/5 chance to take you to the PD. 106 room is at the end of the walkways with the big spinning thing. You can save before the trigger and reload until you get it.