In 2005 during the peak of the Sudoku craze, British Airways had to issue a memo to its flight attendants, forbidding them from playing Sudoku during takeoff and landing. But as with any type of addiction, it can also create its share of problems. Relief from depression, lowered blood pressure, and reduced anxiety have all been associated with the Sudoku habit. Sudoku is on a whole different level.įortunately for fellow Sudoku addicts across the globe, the Sudoku addiction is a vice with mostly beneficial side effects. ![]() ![]() iPhones and other such devices might be addictive. The Independent of London reported that a 700 percent increase in the sale of pencils has been attributed to the sudoku craze. All of this is based on simple principles using the numbers from 1 to 9, where you have to fill the empty spaces, using logical thinking and the numbers shouldn’t be repeated in the same square, row or column.“Hold my sake”, said Sudoku to the iPhone. The Sudoku rules are not difficult in general, but the game has endless options with millions of combinations and a wide variety of difficult levels. Thus the “process of exclusion” in Sudoku works – look carefully which spaces are clear, which numbers are missing and then by deduction, based on the positions of the numbers in the grid, you can find which numbers you must place. This means that there’s only one place where you can put number 1 - in the square marked in green. In that case you can easily notice that number 1 is found in the upper left square and in the upper middle square (the numbers circled in red). One of the ways to find out what number in which column to place using the ”process of exclusion” when you check the numbers that are already included in every square - because there can’t be duplicated numbers in a square, row or column. In the Sudoku grid (shown below), in the left vertical column (marked with blue) are missing few numbers: 1, 5 and 6. What does it mean “process of exclusion” while playing Sudoku? Here’s an example. No need to rush- Sudoku is based on patience, inspiration and recognition of the patterns. If you don’t know which numbers you have to place in particular space, keep checking the other parts of the grid until you see the opportunity to place a number. Sudoku is a logically based game, that’s why guessing won’t help. This means that we should ignore the upper left square and try to complete another part of the grid. When we trace which numbers are missing from the square, row or column, we can exclude or use deduction to find out which number we should place in the empty fields.įor an example, in the upper left square we know that we should place 5 or 6 to complete the whole square, but we can’t tell which number where should be positioned before checking the nearby rows and columns. ![]() The only numbers missing in this square are 5 and 6. In the process of solving, everyone can choose the techniques that he/she likes for solving the Sudoku, also we have some techniques that we explained in our articles.Īs you can see in the upper left square (marked with blue) there are already filled 7 from 9 spaces. ![]() We won’t be covering all techniques for solving the Sudoku grid, instead we’ll give you initial direction. You can find a lot of information on the internet about techniques for solving Sudoku puzzles.
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