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Elementary [[solving technique]], using the fact that only a single [[candidate]] is left for a [[constraint]]. '''Singles''' are often ignored when players communicate about the way they solve a [[Sudoku]]. Singles are the only solving techniques which deal with immediate placements. Other techniques can only accomplish eliminations, but may lead to an immediate single. There are 2 types of singles: ; [[Naked Single]] : Only a single candidate left in a cell. ; [[Hidden Single]] : Only a single candidate left for a particular [[digit]] in a [[house]]. [[Category:Solving Techniques]] [[Category:Single-Digit]]

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