Public puzzle
SE grade 8.9 Sudoku
8.9SE grade · 17 clues
By The Hardest Sudoku Team · Last updated
5
1
7
3
2
6
2
4
8
1
3
2
8
4
6
7
5
Givens only — solution not shown.
About this puzzle
An SE grade 8.9 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.