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The following series of videos will cover the tips or techniques that will help you to solve most Sudoku puzzles.
Basic Rules of Sudoku
The One Rule: 1, 2, 3, 4, 5, 6, 7, 8, 9 exactly once in each row, column and block.
Guessing in Sudoku
Should you guess? No! Every Sudoku puzzle has just one solution.
The One Choice Technique in Sudoku
Try to find cells that have only one choice.
The One Place Technique in Sudoku
Try to find the one place that a particular number can go.
The Scanning Technique in Sudoku
Use the scan technique to decide where to put a particular number.
The Double Scanning Technique in Sudoku
Use double scanning techniques to find hidden restrictions,
Finishing the Sudoku Puzzle
Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.
You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.