{"id":18,"date":"2025-12-01T13:13:46","date_gmt":"2025-12-01T12:13:46","guid":{"rendered":"https:\/\/en.lr-raetsel.de\/blog\/?p=18"},"modified":"2025-12-01T13:13:46","modified_gmt":"2025-12-01T12:13:46","slug":"x-wing-in-sudoku","status":"publish","type":"post","link":"https:\/\/en.lr-raetsel.de\/blog\/x-wing-in-sudoku\/","title":{"rendered":"X Wing in Sudoku"},"content":{"rendered":"

Simple Sudoku puzzles in magazines or puzzle books can be solved by beginners or advanced players alike by simply following the rules and applying a little logic. However, more difficult Sudoku puzzles often require us to use advanced strategies to find a solution. One such advanced or difficult technique in Sudoku is the X Wing.<\/p>\n

In this article, I will explain how the X Wing works. Before we get started, however, we need to remember two things in order to really understand this strategy.
\nFirst, we have to remember the rules. We can summarize them briefly as follows:<\/p>\n

Each number from 1 to 9 must appear exactly once in each row, column, and block.<\/p><\/blockquote>\n

In addition, in many advanced Sudoku strategies the candidate notation is very important. This involves writing all possible numbers in small letters or pencil in the empty cells that are candidates for these cells. This method greatly simplifies the application of many other methods.<\/p>\n

If you are generally interested in many Sudoku strategies, you are welcome to take a look at my book on this topic<\/a>. All solution methods are explained there using examples.<\/p>\n

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