Singles
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.
Solving Sudoku Strategy - Singles
Full House
A house with a single empty cell.
Last Digit
The last instance of a digit.
Hidden Single | Pinned Digit
A single candidate remaining for a digit in a house.
Naked Single | Forced Digit | Sole Candidate
A single candidate remaining in a cell.
A house with a single empty cell.
Last Digit
The last instance of a digit.
Hidden Single | Pinned Digit
A single candidate remaining for a digit in a house.
Naked Single | Forced Digit | Sole Candidate
A single candidate remaining in a cell.
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Sudoku strategies
- Coloring
- Singles
- Fish
- Chains and Loops
- Intersections
- Subsets
- Wings
- Single Digit Patterns
- Uniqueness
- Almost Locked Sets
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- Blank Sudoku Grids
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