The Sudoku completion problem with rectangular hole pattern is NP-complete

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The Sudoku completion problem with rectangular hole pattern is NP-complete

The sudoku completion problem is a special case of the latin square completion problem andboth problems are known to beNP-complete. However, in the case of a rectangular hole pattern – i.e. each column (or row) is either full or empty of symbols – it is known that the latin square completion problem can be solved in polynomial time. Conversely, we prove in this paper that the same rectangular h...

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ژورنال

عنوان ژورنال: Discrete Mathematics

سال: 2012

ISSN: 0012-365X

DOI: 10.1016/j.disc.2012.07.022