Expert sudoku — printable sheet 12
Four expert puzzles, one page. Answer key for this sheet.back to the puzzles.
1
8
7
4
3
5
6
2
9
3
9
4
2
6
8
1
7
5
5
6
2
9
7
1
4
8
3
6
1
5
8
4
2
9
3
7
2
7
3
6
1
9
8
5
4
9
4
8
7
5
3
2
6
1
7
3
9
1
8
6
5
4
2
4
2
6
5
9
7
3
1
8
8
5
1
3
2
4
7
9
6
6
5
4
3
2
9
8
1
7
7
3
8
4
5
1
6
9
2
9
1
2
7
8
6
5
3
4
4
7
6
5
1
8
9
2
3
3
8
1
9
7
2
4
5
6
2
9
5
6
3
4
1
7
8
1
2
9
8
4
3
7
6
5
8
6
7
2
9
5
3
4
1
5
4
3
1
6
7
2
8
9
3
2
5
9
8
7
4
6
1
1
9
8
2
6
4
7
3
5
7
4
6
5
3
1
2
8
9
4
7
2
1
9
8
6
5
3
5
3
1
7
2
6
9
4
8
8
6
9
4
5
3
1
2
7
9
5
3
6
7
2
8
1
4
6
8
4
3
1
9
5
7
2
2
1
7
8
4
5
3
9
6
6
4
3
2
1
5
8
7
9
7
1
9
6
8
4
2
5
3
2
5
8
3
7
9
6
1
4
1
3
4
7
2
8
9
6
5
8
9
7
5
6
3
4
2
1
5
6
2
4
9
1
3
8
7
4
2
1
9
5
6
7
3
8
9
8
6
1
3
7
5
4
2
3
7
5
8
4
2
1
9
6
Sheet 12 of 20 · all expert sheets