Is a sukkah shaped like a tent (walls meeting at the top, no separate roof) valid?

SukkotS'chach

Synopsis

A tent-shaped sukkah (walls slanting to meet at top, no distinct roof) is invalid. Having even a tefach of flat roof area, or a tefach gap at the bottom between leaning wall and ground, makes it valid.

Early Acharonim
Lenient
Strict
Lesser cited
Major authority

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