9-2 Sudoku

Expression of helping someone out

• lend me a hand
• give a (helping) hand
• bail out
• help out with
• do me a favour
• many hands make light work
• In union there is strength
• Sticks in a bundle are unbreakable
• A single leaf provides no shade
• No one can whistle a symphony. It takes an orchestra to play it

The Basic Rules of Sudoku

• There is only one valid solution to each Sudoku puzzle. The only way the puzzle can be considered solved correctly is when all 81 boxes contain numbers and the other Sudoku rules have been followed.
• When you start a game of Sudoku, some blocks will be pre-filled for you. You cannot change these numbers in the course of the game.
• Each column must contain all of the numbers 1 through 9 and no two numbers in the same column of a Sudoku puzzle can be the same.
• Each row must contain all of the numbers 1 through 9 and no two numbers in the same row of a Sudoku puzzle can be the same.
• Each block must contain all of the numbers 1 through 9 and no two numbers in the same block of a Sudoku puzzle can be the same.

Exercise