Public puzzle
SE grade 6.6 Sudoku
6.6SE grade · 23 clues
By The Hardest Sudoku Team · Last updated
3
1
6
6
9
4
8
2
2
5
9
3
7
5
1
4
8
7
9
7
8
2
1
Givens only — solution not shown.
About this puzzle
An SE grade 6.6 Sudoku with 23 clues — hard, leaning on X-Wings and steady candidate elimination.
The SE grade is the canonical difficulty number from Sudoku Explainer — read how it works on the SE grade page.