Roofs, courtyards and karpefs, the joint eruv of two courtyards, and what joins or separates them — notably wall, ladder, ditch, stack of straw — 19 seifim in the Shulchan Aruch of the Mechaber; 22 in the Shulchan Aruch HaRav, under its own numbering.
LEVEL 01
A pedagogic introduction: Hebrew text of the Mechaber and the Rema's glosses, the first entries of the Mishnah Berurah, a clear English rendering, key concepts unpacked, practical cases and a summary.
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Deep pilpul: Gemara sources, shittos of the Rishonim and Acharonim, foundational chakiros, classic machlokesim, and practical nafka minah.
📖 StudyLEVEL 03
A master-level synthesis: central axiom, hierarchy of concepts, decision trees, mnemonics, pitfalls to avoid, and a summary chart.
📖 StudyLEVEL 04
The Shulchan Aruch HaRav of the Alter Rebbe on this siman: 22 seifim.
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