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This paper refutes the validity of the polynomial-time algorithm for solvingsatisfiability proposed by Sergey Gubin. Gubin introduces the algorithm using3-SAT and eventually expands it to accept a broad range of forms of the Booleansatisfiability problem. Because 3-SAT is NP-complete, the algorithm would haveimplied P = NP, had it been correct. Additionally, this paper refutes thecorrectness of his polynomial-time reduction of SAT to 2-SAT.

A Critique of a Polynomial-time SAT Solver Devised by Sergey Gubin