A 3x3 square of cells.
Two cells that are in the same row, column or block.
The possible digits that a cell can contain.
An individual square in the Sudoku where a digit can be placed.
A vertical span of 9 cells. Columns are numbered 1 to 9, with the leftmost column being 1, and the rightmost column being 9.
Conjugates are a pair of cells in a unit which are the only two cells in that unit with a given candidate. One cell must contain the candidate, the other must not.
The complete set of cells in a Sudoku.
The intersection of two cells is the set of cells that share a unit with both cells.
The shorthand notation to refer to the cell in row X, column Y. For example, r2c4 is the cell in row 2, column 4.
A horizontal span of 9 cells. Rows are numbered 1 to 9, with the top row being 1, and the bottom row being 9.
Each row, column, or block can be referred to as a unit.
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Last Updated: 4/18/2019 1:45:17 PM CST