Hardest Sudoku — SE grade 7
SE grade 7.0 to 8.5
By The Hardest Sudoku Team · Last updated
TL;DR
Expert. Wings (XY-Wing) and larger fish (Swordfish) appear; progress often depends on chaining one elimination into the next.
What is a SE grade 7 puzzle like?
Expert. Wings (XY-Wing) and larger fish (Swordfish) appear; progress often depends on chaining one elimination into the next.
Which techniques does this band need?
Where does this sit on the scale?
See the full ladder on the SE grade page. The hardest puzzles — the monsters — live at the top of the scale; meet them on What is the hardest Sudoku?
Play puzzles at this grade →