Computational complexity and an integer programming model of Shakashaka
نویسندگان
چکیده
Shakashaka is a pencil-and-paper puzzle proposed by Guten and popularized by the Japanese publisher Nikoli (like Sudoku). We determine the computational complexity by proving that Shakashaka is NP-complete, and furthermore that counting the number of solutions if #P-complete. Next we formulate Shakashaka as an integer programming (IP) problem, and show that an IP solver can solve every instance from Nikoli’s website within a second.
منابع مشابه
Computational complexity of numberless Shakashaka
Shakashaka, like Sudoku, is a pencil-and-paper puzzle. In this paper we show that Shakashaka is NP-complete in the case of numberless black squares.
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عنوان ژورنال:
- IEICE Transactions
دوره 97-A شماره
صفحات -
تاریخ انتشار 2013