combinatorics - Draw a line through all doors - Puzzling Stack Exchange

I saw the following problem on 4chan and couldn't solve it: It's very likely to be some kind of troll (no solution). I'm hoping to see some rigorous proofs that disprove the existence of such a l

Ramsey Theory's Surprising Roots — From Logic to Combinatorics

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combinatorics - Draw a line through all doors - Puzzling Stack

On partial information retrieval: the unconstrained 100 prisoner

Microscopic Insights into Charge Formation and Energetics in n

Cross-Blockchain Transactions: Systems, Protocols, and Topological

Classic Problems in Probability Theory

A Rubik's Cube Cryptosystem-based Authentication and Session Key

DOORWAY PUZZLE: you must go through each doorway of each