Medium Jigsaw Sudoku Online

Medium Jigsaw Sudoku sits in the same difficulty band as Classic Medium — pointing pairs, claiming pairs, and naked subsets all come into play — but the irregular regions force you to re-learn what each technique looks like on the board. A pointing pair that's obvious inside a 3×3 box can hide inside a long, snaking jigsaw region until you slow down and trace its nine cells. Sudoku247Online's jigsaw generator regenerates both the puzzle and the region layout for every solve, so the irregular shapes never repeat. Most Medium puzzles solve in 12–25 minutes once you're comfortable with the region scan.