Sumplete is Hard, Even with Two Different Numbers

Suthee Ruangwises

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arXiv · 2309.07161

Sumplete is Hard, Even with Two Different Numbers

Suthee Ruangwises

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Abstract

Sumplete is a logic puzzle famous for being developed by ChatGPT. The puzzle consists of a rectangular grid, with each cell containing a number. The player has to cross out some numbers such that the sum of uncrossed numbers in each row and column is equal to a given integer assigned to that row or column. In this paper, we prove that deciding solvability of a given Sumplete puzzle is NP-complete, even if the grid contains only two different numbers.

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Suthee Ruangwises. 2023-09-11. Sumplete is Hard, Even with Two Different Numbers. https://arxiv.org/abs/2309.07161

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