Chuzo IWAMOTO, Tatsuya IDE
Abstract
Nurimisaki and Sashigane are Nikoli's pencil puzzles. We study the computational complexity of Nurimisaki and Sashigane puzzles. It is shown that deciding whether a given instance of each puzzle has a solution is NP-complete.
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Nurimisaki and Sashigane are Nikoli's pencil puzzles. We study the computational complexity of Nurimisaki and Sashigane puzzles. It is shown that deciding whether a given instance of each puzzle has a solution is NP-complete.
Key concepts: Computational complexity theory, Pencil (optics), Computer science, Computational problem, Theoretical computer science, Asymptotic computational complexity, Mathematics, Algorithm