Very quickly review גמרא דף כב. “א”ר יצחק בר יוסף (second to last line) until דף כב: “בעא מיניה רחבה מרבא (ten lines from top of Amud)
Questions:
Is there a limit to a size of a Reshus Hayachid?
The Rabanan in משנה דף כב are of the position לא אתי רבים ומבטלי מחיצות. Why is Eretz Yisrael not considered a Reshus Hayachid as it is surrounded by natural walls?
Review תוס’ דילמא – how does Tosfos answer the above question?
Learn ריטב”א דהא מקיף for a different explanation (see attachment)
How does the Ritva differ from Tosfos?
According to Tosfos is the size of the area enclosed a factor to say אתי רבים ומבטלי מחיצות?
Learn תוס’ רא”ש (see attachment)
Does Tosfos agree to the Tosfos Rosh?
Learn ביאור הלכה ס’ שמ”ו סע’ ג “קרפף יותר who discusses a third opinion
https://hebrewbooks.org/pdfpager.aspx?req=60389&st=&pgnum=17&hilite=
Learn גמרא דף כב: “בעא מיניה רחבה מרבא (ten lines from top of Amud) until “איתיביה” (seven lines before wide lines)