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dc.contributor.authorEspasa Arxer, Joan
dc.contributor.authorGent, Ian P.
dc.contributor.authorHoffmann, Ruth
dc.contributor.authorJefferson, Christopher
dc.contributor.authorLynch, Alice M.
dc.identifier.citationEspasa Arxer , J , Gent , I P , Hoffmann , R , Jefferson , C & Lynch , A M 2021 ' Using small MUSes to explain how to solve pen and paper puzzles ' . < >en
dc.identifier.otherORCID: /0000-0003-2979-5989/work/101217896
dc.identifier.otherORCID: /0000-0002-1011-5894/work/101218015
dc.description.abstractPen and paper puzzles like Sudoku, Futoshiki and Skyscrapers are hugely popular. Solving such puzzles can be a trivial task for modern AI systems. However, most AI systems solve problems using a form of backtracking, while people try to avoid backtracking as much as possible. This means that existing AI systems do not output explanations about their reasoning that are meaningful to people. We present Demystify, a tool which allows puzzles to be expressed in a high-level constraint programming language and uses MUSes to allow us to produce descriptions of steps in the puzzle solving. We give several improvements to the existing techniques for solving puzzles with MUSes, which allow us to solve a range of significantly more complex puzzles and give higher quality explanations. We demonstrate the effectiveness and generality of Demystify by comparing its results to documented strategies for solving a range of pen and paper puzzles by hand, showing that our technique can find many of the same explanations.
dc.subjectQA75 Electronic computers. Computer scienceen
dc.titleUsing small MUSes to explain how to solve pen and paper puzzlesen
dc.contributor.institutionUniversity of St Andrews. School of Computer Scienceen
dc.contributor.institutionUniversity of St Andrews. Centre for Research into Equality, Diversity & Inclusionen
dc.contributor.institutionUniversity of St Andrews. Centre for Interdisciplinary Research in Computational Algebraen
dc.contributor.institutionUniversity of St Andrews. St Andrews GAP Centreen

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