Sudoku Hardest Section I M Stuck

You can try today's lovely puzzle from Sam Cappleman-Lynes here: Lesson : In Lesson 10 and 11 of my "lessons" series, I covered x wings and the swordfish. the XY wing is an extension of both ... We look at last Friday's Diabolical puzzle from The Daily Telegraph and show how, by looking Lesson : X-wing patterns appear often and can be used as a Lesson : Here are two examples of the skyscraper pattern, one where the base is across a row, and the other when the base is ...