- Sudoku is played over a 9x9 grid divided to 3x3 sub grids called regions.

What is the cell rule in sudoku. In fact it gives us even more information later. Every proper sudoku puzzle which. A grid has 9 rows 9 columns and 9 boxes each having 9 cells 81 total.

Buddy cells affect each other. Sudoku puzzles come prefilled with numbers in some of the cells. Because of the rules every completed Sudoku puzzle will end up with exactly nine of each digit nine 1s nine 2s nine 3s etc.

A hidden single arises when there is only one possible cell for a candidate. Based only on the first example it seems like Digit Rule is what we call Naked Single only one digit is valid in the cell all others are directly contradicted by already placed digits. Horizontally adjacent rows are a band and vertically adjacent columns are a stack.

Cells are the smallest boxes in a puzzle. Anuncio One of the most popular puzzle games of all time available online. To find it you only need to look at bi-value cells so those solvers who dont like to do full mark-up can deploy it.

When a candidate k is possible in only a single cell of a row column or block then that cell must be k. These filled-in cells are called givens. They are ranked by a difficulty level which corresponds with how many numbers come pre-filled in the puzzle.

In one cell you can fit one number as illustrated by the seven small red squares in Figure 1. The grid is subdivided into nine 33 blocks. The rule still fits.