Buddy Cells

In a given Sudoku, every cell in the grid has 20 buddy cells. The buddy cells are highlighted in green in the given image below. In the example the number 1 is in cell R1C1 (R1C1 being Row 1 and Column 1) All the green cells are buddy cells to R1C1 and cannot contain the number which is already there in R1C1.

No comments:

Post a Comment