Public puzzle
SE grade 6.6 Sudoku
6.6SE grade · 23 clues
By The Hardest Sudoku Team · Last updated
4
9
8
7
1
3
5
4
1
8
9
9
6
6
1
7
6
2
1
4
2
7
8
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.