Q. I heard that the Rov permitted a minyan in a backyard in his neighborhood (during the current pandemic), could that be correct?
A. On question 2610 regarding a group of five neighbors that share different sides and corners of their backyards, with one standing in the middle. We wrote that Horav Shlomo Miller Shlit'a "stressed that no other people or guest that are not the constant inhabitants living in those houses with neighboring backyards are allowed to join the minyan. The dwellers and their children should strongly avoid crossing over the fences or even coming close to them to talk to the neighbors. They should clearly stay away from the fences."
If other neighbors that do not dwell on those adjoining houses want to join the minyan, they should be sternly rejected and denied entry. A sign should be placed at the entry of the backyard, prohibiting the admittance to non dwellers.
Rabbi A. Bartfeld as advised by Horav Shlomo Miller Shlit'a.