Difficult Sudoku Puzzles
Difficult sudoku puzzles will require you to learn advanced sudoku strategies. In this article, I will discuss some advanced tips to solve it
Sudoku XY-Wing Solves Difficult Sudoku Puzzles
What is Sudoku XY-Wing Pattern? A Sudoku XY-Wing pattern occurs in many of the more difficult Sudoku puzzles. XY Wing involves 3 different cells — each with exactly two candidates — that are related to each other in such a way that you can make some logical conclusions. Your ability to identify and solve this …
Sudoku Directions For Solving XY-Wing
Many people have asked me for step-by-step Sudoku directions for solving XY-Wing example number 1. If you have been puzzled about how I solved this puzzle, read this article. It seems that some people have found it difficult to get to the starting point to apply the XY-Wing technique as shown in the graphic. Here is …