Hard sudoku tips

In NovemberThe Times introduced a new extreme level of Sudoku giving players a more difficult level of logic: Super Fiendish.

Advanced Sudoku strategies are used in the hardest levels of these puzzles and they can either help to reduce candidates or to find the solution for a specific cell. Regardless, their application always demands high levels of concentration from the player as they work by deduction. The X-Wing method is one of the most basic advanced Sudoku strategies. It can also be applied in some intermediate levels, although its incidence is very low in these cases. Its goal is to eliminate candidates. The player can use this strategy when there is one candidate repeated in four cells that form a square or rectangle when mentally connected by row and column.

Hard sudoku tips

Home Games Support About. One of the greatest aspects of Sudoku is that the game offers engaging challenges to both the novice, as well as the seasoned puzzle player. Whenever they play a puzzle tailored for their level of competence, both the beginner and the experienced Sudoku solver will have to put a good amount of thought and technique into completing the task. Their approach, though, may not be the same. Solving a hard Sudoku puzzle will require quite a different set of techniques compared to an easy one. This article presents nine such techniques; in increasing difficulty. When utilizing these techniques, the way the pros prefer to do it, is to start with the basic ones. Use the first few techniques to insert as many numbers as you can. Then, when you can add no more numbers to the board using the basic techniques, try the more advanced ones. Do one at a time until you can plot one more number into a cell. Then, start with the basic techniques again, and repeat the process.

In this grid, number 4 is a candidate to two cells in three different rows, allowing the player to use the Swordfish technique. Hard sudoku tips, look to see if there are three rows where the squares all fall into three columns. You may find that in both cases, a certain cell must contain a specific number.

Last Updated: July 29, Fact Checked. This article was co-authored by wikiHow staff writer, Eric McClure. Eric McClure is an editing fellow at wikiHow where he has been editing, researching, and creating content since There are 15 references cited in this article, which can be found at the bottom of the page. This article has been fact-checked, ensuring the accuracy of any cited facts and confirming the authority of its sources. This article has been viewed , times. Learn more

Sudoku has become a very ubiquitous game in our world. This math-based puzzle has taken the world by storm and the vast majority of people are thrilled about that. Maybe you erase and start over, or maybe you just give up. Just like with solitaire or mahjong there are strategies out there that you can use to help increase your chances of solving the sudoku puzzle. It just takes some practice and research to figure out what the strategies are and how they work. Before you pick up your pencil or open your app, take some time to read about the strategies and tips here. No one becomes a sudoku genius overnight but these strategies will definitely help.

Hard sudoku tips

Home Games Support About. One of the greatest aspects of Sudoku is that the game offers engaging challenges to both the novice, as well as the seasoned puzzle player. Whenever they play a puzzle tailored for their level of competence, both the beginner and the experienced Sudoku solver will have to put a good amount of thought and technique into completing the task. Their approach, though, may not be the same. Solving a hard Sudoku puzzle will require quite a different set of techniques compared to an easy one. This article presents nine such techniques; in increasing difficulty. When utilizing these techniques, the way the pros prefer to do it, is to start with the basic ones.

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Yes No. In the example, the two candidate pairs circled in red, are the sole candidates. Whenever they play a puzzle tailored for their level of competence, both the beginner and the experienced Sudoku solver will have to put a good amount of thought and technique into completing the task. Identify naked or hidden pairs. Please log in with your username or email to continue. No account yet? X-Wing This method can work when you look at cells comprising a rectangle, such as the cells marked in red. This is easiest to visualize when the candidates are really close together, but the rectangular pattern required to use this technique could theoretically involve the 4 outermost corners of the puzzle. If you identify a set of 4 identical candidates that form a rectangle across multiple cells, you can use the x-wing technique. To apply it, the player must find a digit candidate to two cells in the same row, in three different rows. Thus this cell must contain a 9.

In November , The Times introduced a new extreme level of Sudoku giving players a more difficult level of logic: Super Fiendish.

In this example, the number 5 forms the necessary pattern to apply the X-Wing strategy. Connecting them will result in a closed chain that reveals two sets of possible placements for that digit. More Sudoku Tips:. Forcing Chains Forcing chains is one of the easiest advanced Sudoku strategies to understand. Sudoku Unique Rectangle: Types and Patterns. Home Games Support About. Jigsaw Unfortunately, the technique is not the easiest to utilize. These singles are easy to identify, so spend a few minutes scanning each row, column, and cell for any squares with only one possible solution. This article has been fact-checked, ensuring the accuracy of any cited facts and confirming the authority of its sources. Thus you can remove 7 as a possible candidate from the rest of the row.