How To Solve Sudoku Rules

Therefore if a number say 4 can only be put in a single cell within a blockcolumnrow then that number is guaranteed to fit there. There are two ways to approach the Sudoku Solving process. Sudoku involves filling empty spaces with the number 1-9 without repeating any numbers within each row column or square.

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Sudoku Rule 1.

How to solve sudoku rules. Rules how to solve Sudoku In order to get the right decision you need to take into account a few simple rules. While solving the sudoku puzzle you can only use each number one time in the square column and row. You know that each block row and column on a Sudoku board must contain every number between 1 and 9.

Each row must contain all numbers from 1 to 9. The object of the puzzle is to figure out the places where you have to place the numbers 1-9 in order to have every single row column and block filled up with a 1 2 3 4 5 6 7 8 and a 9. Make sure the cells can be added up to the sum of its cage.

If these terms are not familiar read my article Sudoku Tips for an illustrative guide. You can use logic retaining in your memory the possible candidates for each cell row column and region or you can write the candidates down. Each box must contain all numbers from 1 to 9.

As you fulfill the objective of the game here are the binding Sudoku rules of thumb you have to also put in mind. Use the thermometers to help reduce the possible digits for certain cells where regular sudoku rules have left you with multiple possibilities. The objective of Sudoku is to fill a 9x9 grid made of squares shown above circled in blue so that each row each column and each full 9x9 square use the numbers 1-9.

The easiest way starting a Sudoku puzzle is to scan rows and columns within each triple-box area eliminating numbers or squares and finding situations where only a single number can fit into a single square. This means that the entire puzzle should be able to be solved without guessing that means you can use deductive reasoning based solely on which numbers are already in place within each row column or square to figure out which numbers should go in which empty spaces. Dont forget about the regular sudoku rules.

If it can be written only in one cell. Fill all rows columns and 3x3 region with numbers exactly like in regular sudoku. Each row column and square 9 spaces each needs to be filled out with the numbers 1-9 without repeating any numbers within the row column or square.