A quick guide on how to play Sudoku - By: Helen Frey

The numbers game Sudoku is fun, even if you are not great at maths (although it does help a bit). A problem solving game requiring a bit of patience and a lot of trial and error, anyone with a deductive mind can play. It is such an easy game to master it really is the number equivalent to a crossword, anyone can play both young and old.

Sudoku Objective.

The goal in a game of sudoku is to fill in all the empty squares on a grid with the correct numbers. The original version of sudoku is made up of a 9x9 squared grid, each 9x9 grid also contains 9 3x3 squares. There are really only 3 rules you need to know to play this sudoku;

Each row needs to be filled in with the numbers 1 through 9.

Use the numbers 1 through 9 to fill in the empty squares in each column.

Each subsquare of 3 by 3 (9 squares) needs to have each of the numbers 1 through 9.

Sudoku puzzles will typically start with some or many of the squares already filled in (depending on difficulty). The more cells that are already prefilled means the easier the sudoku will be to complete. Filling in the squares with the correct numbers will make the next choices easier to make, as there will be less possible numbers to choose from.

Sudoku Techniques.

The best thing to do when starting a Sudoku puzzle is to briefly examine the grid for rows and columns that have the least empty cells. For example, if you found the top right 9 square section (3x3 subsection) only had a 3 and a 9 missing, and the row that had a missing cell also had a 3 filled in at the bottom, you know now that you need to place the 9 in the row mentioned, and the 3 in the remaining empty square for that section, also providing a number for the next row/column.

As soon as the 7 is filled in, common sense makes it necessary that only a 5 may go underneath it as all numbers from 1 through 9 have to be displayed in the area. After that, a person can look to the 2 leftover open boxes from the right column - these need to include a 2 and a 4 as the column's digits must represent 1 through 9. Repeating the above process will allow you to properly determine which of these numbers go where.

Nevertheless, selections for boxes in many cases are not really that simple to deduce. An additional strategy is to "pencil in" choices and after that go through possible solutions that come up until finally a conflict can be found. Often these conflicts appear after several numbers are penciled in, and one can go back to the beginning and check out another choice until eventually something works.

Remember that with Sudoku, once you have worked out the correct numbers in the beginning, the rest of the numbers become easier to find.

About the Author

A great way to keep your brain sharp is playing Online Sudoku, so get your daily fix of problem solving puzzles at the authors cool websit - http://www.gamestwister.com

Article Directory Source: http://www.articlerich.com/profile/Helen-Frey/201320

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