Public puzzle
SE grade 9.1 Sudoku
9.1SE grade · 18 clues
By The Hardest Sudoku Team · Last updated
1
5
3
6
7
4
5
8
3
4
6
7
1
2
9
5
8
4
Givens only — solution not shown.
About this puzzle
An SE grade 9.1 Sudoku with 18 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.