| Rating | Solver | Clue |
|---|---|---|
| DIGIT | Single number | |
| TWO | Single number | |
| ONE | Single number | |
| SUDOKU | Single number - Japanese | |
| UNIT | A single thing, as a magnitude or number, regarded as an undivided whole. | |
| HEAT | A single complete operation of heating, as at a forge or in a furnace; as, to make a horseshoe in a certain number of heats. | |
| LENGTH | A single piece or subdivision of a series, or of a number of long pieces which may be connected together; as, a length of pipe; a length of fence. | |
| COLUMN | A number of ships so arranged as to follow one another in single or double file or in squadrons; -- in distinction from "line", where they are side by side. | |