Public puzzle
SE grade 8.5 Sudoku
8.5SE grade · 17 clues
By The Hardest Sudoku Team · Last updated
6
3
2
4
8
7
2
6
5
4
3
8
1
5
8
2
7
Givens only — solution not shown.
About this puzzle
An SE grade 8.5 Sudoku with 17 clues — diabolical, broken open only by forcing chains.
The SE grade is the canonical difficulty number from Sudoku Explainer — read how it works on the SE grade page.