IEICE Transactions on Information and Systems
Online ISSN : 1745-1361
Print ISSN : 0916-8532
Special Section on Foundations of Computer Science — New Trends in Algorithms and Theory of Computation —
BlockSum is NP-Complete
Kazuya HARAGUCHIHirotaka ONO
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2013 年 E96.D 巻 3 号 p. 481-488

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BlockSum, also known as KeisanBlock in Japanese, is a Latin square filling type puzzle, such as Sudoku. In this paper, we prove that the decision problem whether a given instance of BlockSum has a solution or not is NP-complete.
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© 2013 The Institute of Electronics, Information and Communication Engineers
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