Answer: The objective is to fill a 9x9 grid so that each column, each row, and each of the nine 3x3 boxes (also called blocks or regions) contains the digits from 1 to 9. A cell is the smallest block in the game. A row , column and region consists of 9 cells and the whole game consists of 81 cells.
Rule: Each sudoku region (i.e., row, column, or nonet) contains the digits one through nine. Thus, each sudoku region has a total value of 45. If S is the sum of all the cages contained entirely in a region, then the cells not covered must sum to 45-S. The Rule-of-k is an extension of the Rule-of-1.
Hidden Pairs: Hidden Pairs. A Hidden Pair is basically just a “buried” Naked Pair. It occurs when two pencil marks appear in exactly two cells within the same house (row, column, or block).
The goal: Sudoku is one of the most popular puzzle games of all time. The goal of Sudoku is to fill a 9×9 grid with numbers so that each row, column and 3×3 section contain all of the digits between 1 and 9. As a logic puzzle, Sudoku is also an excellent brain game.
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