Given

A digit placed in a cell by the puzzle maker.

Aliases are: clue, hint, initial digit

Minimum number of Givens

Currently, there are no known Sudokus with less than 17 givens. For several Sudoku Variations, there are different minimum givens, depending on the number of additional constraints. In the Sukaku variant, there are no givens at all. In this variant, the puzzle is represented by a pencilmark grid, in which no given digits are present.