The most basic strategy to solve a Sudoku puzzle is to first write down, in each empty cell, all possible entries that will not contradict the One Rule with respect to the given cells. If a cell ends up having only one possible entry, it is a forced entry that you should fill in.
What is a unique solution in Sudoku?
A well-formed Sudoku puzzle is one that has a unique solution. This is because if we had a rank-n puzzle where only n2-2 symbols were used and we found a solution, then interchanging the places of the two symbols missing from the givens would result in another, different solution.
How do I get rid of Sudoku fast?
How to Improve Your Sudoku Skills in 5 Minutes or LessSet a Timer. If you dont want to lose too much time to playing Sudoku, start with just 5 minutes. Focus on a Single Row, Column or Square. An entire 9-by-9 Sudoku grid can be overwhelming. Practice One New Technique for 5 Minutes. Get a Fast Start.
What patterns do you look for in Sudoku?
Sudoku PatternsIntroduction. Using patterns is another way to help you solve sudoku puzzles. Details. Skill Levels. Hidden Patterns. Pattern: The Wall Pattern. Pattern: The Corner Pattern. Pattern: The Diagonal Pattern. Pattern: The Right Angle Pattern.