If non-Jews placed a person outside the techum in an enclosed space (pen, prison, cave, or walled city), what are his movement limits — and does it matter whether he originally left the techum willingly or under duress?

If someone leaves the Shabbat techum even one amah (cubit), may he re-enter and walk through the city like a resident?

4 opinions across 3 eras

If a person has one foot inside the techum and one foot outside when Shabbat begins, may he enter the city?

2 opinions

If Shabbat begins while a person is already outside the city's techum (even one amah beyond the 2000-cubit boundary), what are his movement limits?

3 opinions

May a human partition (mechitzat bnei adam) be formed to help someone who inadvertently exited the techum return within it?

3 opinions

If someone was forcibly removed from the techum or exited inadvertently, and is then returned to the techum, what are his movement limits?

4 opinions

If a person's boat departed on Shabbat, may he walk the entire boat? What if the walls of the boat broke open during Shabbat?

4 opinions

If someone willingly exited the techum and was then forcibly returned to his own city (which is walled), what are his movement limits within and beyond the city?

4 opinions

If fruit was taken outside the techum and then returned, what are its movement and consumption restrictions — and does it matter whether it was taken out intentionally or inadvertently?

4 opinions across 3 eras