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arXiv · 2502.13536

Slant/Gokigen Naname is NP-complete, and Some Variations are in P

Jayson Lynch·Jack Spalding-Jamieson
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Abstract

In this paper we show that a generalized version of the Nikoli puzzle Slant is NP-complete. We also give polynomial time algorithms for versions of the puzzle where some constraints are omitted. These problems correspond to simultaneously satisfying connectivity and vertex degree constraints in a grid graph and its dual.

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Jayson Lynch, Jack Spalding-Jamieson. 2025-02-19. Slant/Gokigen Naname is NP-complete, and Some Variations are in P. https://arxiv.org/abs/2502.13536

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