How does one check for chametz in a hole between two Jewish neighbors' houses or between a Jew and a non-Jew?

PesachBedikat Chametz

Synopsis

Between two Jews, each checks as far as their hand reaches and nullifies the rest mentally. Between a Jew and a non-Jew, no checking is done due to danger, though some require checking for definite chametz during the day.

Early Acharonim
Late Acharonim
Lenient
Strict
Lesser cited
Major authority

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