Puzzle Detail
12×12 Hard — Set 1
10
9
4
5
8
12
9
6
9
10
2
7
3
11
9
1
3
7
10
8
12
4
3
11
6
12
6
9
4
8
5
6
2
2
6
5
3
12
10
11
8
5
5
10
2
6
Solver Notes
Frequently Asked Questions
What is Hard 12×12 Sudoku?
A 12×12 sudoku grid with fewer given numbers, solvable with basic logic techniques.
How long does a Hard 12×12 sudoku take?
30–60 minutes for a hard 12×12 sudoku, depending on experience.
Can I print this 12×12 sudoku?
Yes, click the Print or Download button for a PDF version. Optimized for A4 and US Letter paper. Solution is included on a separate page.