What is new about this technique is that knowledge about two (similar) rows, lets you make removals from columns. Of course, it works the other way too, if you can spot similar columns. You’ll often spot X-Wings – they are quite common, but they won’talwayslead to you being able...
6. X-Wing This method can work when you look at cells comprising a rectangle, such as the cells marked in red. In this example, let’s say that the red and blue cells all have the number 5 as candidate numbers. Now, imagine if the red cells are the only cells in columns 2 and ...
"Y-Wing" technique is similar to "X-Wing", but it based on three corners instead of four. Let's take a look at this technique with an example. To start, we need to find a cell with exactly two notes. We'll call this cell a pivot.Then, we'll look for two more cells with 2...
XY-Wing strategy is an advanced technique for eliminating candidates. Let’s review it with an example. Let’s say, there are 3 different cells with exactly 2 candidates (notes) each that are related to each other. The cell in the center is called the pivot. The two others are called ...
Y-Wing technique Advanced technique for eliminating candidates. It begins by finding a cell with only two candidates (bi-value cells) called the pivot. These 2 candidates are called X and Y. See image: Go here to learn the full technique ...
10.矩形对角线法 (X-wing) 11.XY形态匹配法(XY-wing) 12.XYZ形态匹配法(XYZ-wing) 13.三链数删减法 (Swordfish) 14.WXYZ形态匹配法(WXYZ-wing) 1. 显式唯一法 (Naked Single) 这是候选数删减法中最简单的一种方法,就是扫描候选数栅格表,如果哪个单元格中只剩下一个候选数,就可应用显式唯...
X-Wing是一个高级技巧,在一些比较复杂的题目里可以非常有效的去除候选数。 如果一个数字正好出现且只出现在某两行的相同的两列上,则这个数字就可以从这两列上其他的单元格的候选数中删除。 当然,同样的情形也会出现在列中,也就是说,如果一个数字正好出现且只出现在某两列的相同的两行上,则这个数字就可以从...
X Wing Swordfish XY Wing (aka Y Wing) >> use checkboxes to track your progress. Sudoku Tips and Tricks While it relies heavily on logic and reasoning, there are certain tips and tricks that can make solving these puzzles more manageable and enjoyable. Start Simple If you're new to Sudoku...
Swordfish is a more complicated version of X-Wing. In most cases, the technique might seem like much work for very little pay, but some puzzles can only be solved with it. So if you want to be a sudoku-solving master, read on!
Expert Sudoku absolutely requires notes, so be sure to know that the pencil button in the right corner both enables and disables notes when needed. Advanced techniques of solving are also necessary when playing this extreme sudoku puzzle. One technique is called X-Wing. This sudoku technique is...