It can be solved using simple logic and eliminating a few candidates. The puzzle above I would rate it as very easy. I’ll cover this topic in more detail in related articles.Ĭomplete the Sudoku puzzle so that each and every row, column, and region contains the numbers one through nine only once. It is necessary to eliminate all candidates to arrive at a single answer for each cell. It will also reveal answers that are not immediately obvious otherwise.Īfter you have identified the possible candidates it is time to apply some logic. This can save you time in solving puzzles and prevent missing important candidates. In cases where the solution isn’t immediately obvious, you markup or pencil in a vacant cell the possible candidates for future reference.Ĭonsider using the blank Sudoku grid with candidates method to determine all the possible candidates. Eliminate cells for consideration by applying the Sudoku rules using these numbers. Scan the “givens” looking for the same number in different rows, columns, or regions. You solve the puzzle by filling in the empty cells with a single number (from all the possible candidates) that doesn’t violate Sudoku rules. There is only one correct number per cell. These numbers can not be changed in any puzzle.
The numbers shown in the example are the “givens”. Each region, row, and column contains nine cells each. Traditional Sudoku is a 9×9 puzzle grid made up of nine 3×3 regions. You could play Sudoku using any nine symbols or colors. Applying simple logic and eliminating candidates will provide the solution in every case. There isn’t any need to guess (although you will be tempted at times). A properly prepared puzzle only has one solution. Sudoku Tips. Apply advanced techniques such as X-Wing and Swordfish to break the logjam of the most difficult puzzles. When the challenge gets tougher, read my article on
#Sudoku strategy tutorial how to#
In this article, you will learn the basic techniques on how to play Sudoku puzzles and games.
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