The Door And The Den
Question: May a man have yichud in a back room (e.g., a den) of a house when the front door to the house is open?
Short Answer: Yichud is permitted in a back room if the front door to the house is open (or according to some poskim, merely unlocked) and the back room is open directly to the front room. There are some poskim, though, who might permit it even if the door to the back room is closed (but unlocked).
