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