Highlighted entries are Halachah-related
THREE DAYS
When Purim in walled cities, such as Yerushalayim, falls on Shabbos, when are the Mitzvos of Purim fulfilled?
When the Megilah is read in walled cities on 14 Adar, due to Shabbos, is it considered a reading "not at the proper time" - which needs a Tzibur of ten? What are the parameters of "reading in a Tzibur" for this purpose?
In locations where the custom is not to work on Purim, on which day do residents of walled cities abstain from work in a Purim Meshulash year?
1. Yosef Da'as to Megilah 5:p8, אות ג.
SHABBOS 15 ADAR
The Gezerah of Rabbah prohibits reading the Megillah on Shabbos, lest one come to carry it in the Reshus ha'Rabim. What are the parameters as to which Mitzvos this Gezerah is applied to?
The Gemara mandates that when Purim falls on Shabbos, the Chacham speaks publicly about the day (Rashi - about the Megilah). Is this any different than when Purim falls during the week - or when the Chacham speaks every Yom Tov?
TRAVEL AND PURIM MESHULASH
If the resident of an un-walled city travelled to Yerushalayim on Friday the 14th, can he fulfill his daytime Megilah reading by hearing it from a Yerushalayim resident (who is reading early this year due to Shabbos)? If he then stays for Shabbos, does he assume the obligations of Yerushalayim's Purim as well (e.g., Mishloach Manos and a Seudah on Sunday the 16th)?


