On the NP-completeness of the logic puzzle irasuto

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Bachelor Thesis

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Abstract

This thesis investigates the computational complexity of the Japanese pen-and-paper puzzle irasuto. We show that the problem is NP-complete by presenting a polynomial time reduction from Planar Circuit SAT containing only NOR gates to irasuto.

Keywords

NP; NP-complete; proof by reduction; gadgets; Planar Circuit SAT; pen-and-paper puzzle

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