Lesson #16: The Turbot Fish in Sudoku has a few patterns that have been named and easily recognized in their own right, such as the skyscraper, the 2 string kite, and an empty rectangle, but these patterns all come under the umbrella of the broader category called the Turbot Fish. They all start and end with a strong link, and in this tutorial I give a few examples and show the logic behind this type of pattern. You will find this comes up often and can help you solve harder level puzzles. I hope you enjoy this tutorial, and I hope you Learn Something!