Level 3 sudoku puzzles on this website can be solved using advanced techniques, such as X-wing, XY-wing, XYZ-wing, swordfish, and jellyfish. No divide-and-conquer (try-and-error) is needed.

This page is especially for XYZ-wing pattern only. For training with other patterns, check the links below.

Daily sudoku (X-wing training).

Daily sudoku (XY-wing training).

Daily sudoku (swordfish training).

Daily sudoku (jellyfish training).