Jigsaw Sudoku
Expert00:00
ClassicAbout expert jigsaw sudoku
Expert jigsaw sudoku pushes you into advanced territory: pointing pairs across irregular boundaries, X-Wings where the columns intersect multiple oddly shaped regions, and chain techniques that require tracking constraints across the entire grid. The irregular regions make these techniques harder to spot than in standard sudoku because nothing lines up neatly. Pencil marks are not optional here. Use them, and check your region boundaries carefully before making eliminations.