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This wikiHow teaches you the first steps to solving sudoku. At first glance, sudoku looks difficult because it is all numbers, but in reality, this puzzle game is not based on math. Even if you’re not good at math, you can still solve sudoku. Alternatively, numbers can be replaced with letters or symbols and the result remains the same; it all revolves around pattern recognition. Start by understanding the basics of sudoku, then move on to learning beginner and advanced techniques.
Steps
Learn the basics
- Large squares are usually shaded with a bold border, while small squares have a lighter border. In addition, sometimes large squares are colored in a checkerboard style.
- For example, if a large square already has the number “2”, then you cannot add the number “2” in any of the squares in that square.
Start with easy suggestions
- For example, if some large square contains the numbers 1-3 and 5-9, the missing square will definitely be “4”.
- If in the column there are numbers from 1-7 and 9, you can immediately fill in the missing number as “8”.
- If the number “8” has been repeated in 2 squares, continue to consider the third square. Trace each row with the number “8” to exclude because the “8” of the third square will not fall in those two rows.
- In this case, look for the columns of 2 empty cells. Find out if the number you are entering is in those 2 columns. If yes, exclude the empty cell of the column containing this number and fill in the remaining cell.
Apply advanced techniques
- Such as the number “6”. Look for rows and columns that already have a 6 in it, then start tracing in the large 3 squares scale you’re looking at. Based on the information available and the number in the squares, try to fill in as many 6s as you can.
- When solving puzzles, if you encounter cells that can only contain a certain number, you can always fill in with a pen.
- Apply techniques when double-checking blanks.
Warning
- For each box you fill in, don’t forget to double-check the logic; Just one small mistake can mess up the whole sudoku board.
This article is co-authored by a team of editors and trained researchers who confirm the accuracy and completeness of the article.
The wikiHow Content Management team carefully monitors the work of editors to ensure that every article is up to a high standard of quality.
This article has been viewed 4,060 times.
This wikiHow teaches you the first steps to solving sudoku. At first glance, sudoku looks difficult because it is all numbers, but in reality, this puzzle game is not based on math. Even if you’re not good at math, you can still solve sudoku. Alternatively, numbers can be replaced with letters or symbols and the result remains the same; it all revolves around pattern recognition. Start by understanding the basics of sudoku, then move on to learning beginner and advanced techniques.
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