Hardest Sudoku — SE grade 8
SE grade 8.5 to 10.0
By The Hardest Sudoku Team · Last updated
TL;DR
Diabolical. Simple techniques run dry early; you lean on forcing chains and careful candidate logic to break the puzzle open.
What is a SE grade 8 puzzle like?
Diabolical. Simple techniques run dry early; you lean on forcing chains and careful candidate logic to break the puzzle open.
Which techniques does this band need?
Puzzles in this band typically require:
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 →