Complete Sudoku - extra rules for more symmetry

Research output: Contribution to journalArticlepeer-review


We propose some extra rules to add to the well-known Sudoku puzzle and present an argument to justify their inclusion. The rules mean that puzzles can be created with fewer cells completed initially yet which still have only one solution. We have created a Web-based program which can be used to generate and solve both standard and extended (Complete) puzzles.
Original languageEnglish
Pages (from-to)217-218
Number of pages2
JournalMathematics Today
Publication statusPublished - Dec 2006

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