What is a Y wing in Sudoku?
A Y wing considers strength in cells to deduce strength in candidate location. This is a tad specific for my taste. Most techniques, tips, tricks about how to solve sudoku puzzles stop before they generalize ideas. To extend the idea of a Y wing simply remove the restrictions.
How do you use Y wing in math?
Y-Wing starts with a square that contains exactly two candidates. This square is sometimes called a pivot or hinge. The red square in the above image is the pivot. You can use Y-Wing if each of the two candidates in the pivot forms a conjugate pair in two different units.
How to solve difficult Sudoku puzzles?
Including Y wing style in your bag of solving tricks will help in tackling truly difficult puzzles. Furthermore, such inclusion will beg further generalization that will help to logically solve just about every sudoku puzzle. Note the naked triple illustrated above forbids 1,2,3 from all the blue cells.
What is xyxy wing?
XY Wing also known as Y Wing is an advanced Sudoku tutorial. It uses a bi-value cell called pivot and helps eliminate candidates using it. Livesudoku requires javascript support in order to play Sudoku
What are the requirements to apply the Sudoku X-Wing strategy?
Requirements to apply the Sudoku X-Wing strategy To be able to apply this technique, the player must find 2 rows or 2 columns where a single digit is a candidate in only two cells of each. These cells must be aligned by column and row, forming a square or rectangle when connected. The basic principle of this technique is simple.
What is the single digit rule in Sudoku?
It focuses on one single digit and its goal is to restrict the number of cells that can have that number as a possible candidate. Together with the Swordfish, the Sudoku-X-Wing technique is also a valuable strategy for any player to learn as it branches out into more complex patterns and techniques that are required to solve impossible puzzles.