منابع مشابه
Cyclic Ordering is NP-Complete
The cyclic ordering problem is to recognize whether a collection of cyclically ordered triples of elements of a set T is derived from an arrangement of all the elements of T on a circle. This problem is shown to be NP-complete. A cyclic ordering of a set T = {l,. ., t ) is essentially an arrangement of the elements of T on a circle. A specific definition is as follows (see [4]). Two linear orde...
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In this paper we show that the Mastermind Satisfiability Problem (MSP) is NPcomplete. Mastermind is a popular game which can be turned into a logical puzzle called the Mastermind Satisfiability Problem in a similar spirit to the Minesweeper puzzle [5]. By proving that MSP is NP-complete, we reveal its intrinsic computational property that makes it challenging and interesting. This serves as an ...
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SUMMARY 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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TETRAVEX is a widely played one person computer game in which you are given n2 unit tiles, each edge of which is labelled with a number. The objective is to place each tile within a n by n square such that all neighbouring edges are labelled with an identical number. Unfortunately, playing TETRAVEX is computationally hard. More precisely, we prove that deciding if there is a tiling of the TETRA...
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ژورنال
عنوان ژورنال: Theoretical Computer Science
سال: 1977
ISSN: 0304-3975
DOI: 10.1016/0304-3975(77)90005-6