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Sudoku, or Su-doku, is a Japanese fun puzzle game. Sudoku uses numbers, but no mathematics is needed, and that is why, it is so popular. If you are looking for Sudoku free games, search no more. All you need to do is to learn the rules, have a bit of spare time, and start playing.

✍ Sudoku stimulates the mind and logics which exist in each and every one of us. Studies show that playing Sudoku improves memory, mind clarity, and can even stop and prevent brain illnesses such as Alzheimers! Therefore, there are some scientists & researchers that recommend playing sudoku puzzle brain game number game as part of our regular daily activity.

✍ Sudoku rules

The game's objective is to fill the puzzle with numbers ranging from 1 to 9 so that a number will not appear more than one time in any row, column, or region (a region is a 3x3 box, and it is marked with a thicker line). Each Sudoku puzzle contains 9 rows, 9 columns, and 9 regions.

✍ How to play Sudoku?

When you start to solve a Sudoku puzzle, a part of it is already filled with numbers. These are your clues. You will have to fill the rest of the puzzle using those clues and according to the rules. The easiest way to solve a Sudoku puzzle is to work systematically. Start with the number 1 and search for regions it is missing. Then, according to the rules, try to see if you can conclude where it has to appear over that region. When you find an empty cell where this number has to appear, write it down. Now go and look for another region this number is missing and try to see if you can find the exact location this number has to appear and so on.

Once you go through all possible regions this number might appear, move up chronologically to the next number and go through the whole process you did for the first number. We started with the number 1, so our next number will be 2, then 3, 4, 5, until we reach 9.

Please note that there will be times when you won't find an exact location for a specific number. Don't panic, it's part of the game. You can write it down in draft mode or simply skip to the next possible region or number.

When you finish the process with the number 9, the Sudoku puzzle should be filled with numbers you found their location. Now go back to number 1 and start the whole process once again. Look for regions it's missing and try to figure out according the rules, where it must be placed. Once you finish with the number 1 move up next to number 2 and so on.

Sometimes you will reach a point where all cells in a row, column, or region will be filled, except one. This situation is very easy to solve. All you have to do is to go through all numbers from 1 to 9 and look for them in that row, column, or region. Once you find a number that is missing, that is the number you should write down in the empty cell. This is because according to Sudoku rules, each number should appear in every row, column, or region.

Once you have filled out the whole puzzle without any mistakes, you have successfully solved a Sudoku puzzle.