Expert sudoku — printable sheet 13
Four expert puzzles, one page. Answer key for this sheet.back to the puzzles.
6
4
1
8
7
5
2
9
3
8
3
9
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2
1
7
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6
5
7
2
6
9
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8
4
1
2
9
3
5
1
7
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8
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1
8
6
3
4
2
9
7
5
4
5
7
9
6
8
1
3
2
7
6
5
1
3
9
4
2
8
3
2
4
7
8
6
5
1
9
9
1
8
2
5
4
3
6
7
5
8
6
2
7
3
4
1
9
9
2
3
4
8
1
5
7
6
7
1
4
6
5
9
2
8
3
8
3
7
1
4
5
6
9
2
1
6
5
8
9
2
3
4
7
4
9
2
3
6
7
8
5
1
3
4
9
5
1
6
7
2
8
2
5
1
7
3
8
9
6
4
6
7
8
9
2
4
1
3
5
4
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8
7
2
3
5
1
9
3
7
5
1
8
9
2
6
4
9
2
1
6
4
5
8
7
3
5
9
4
8
3
1
6
2
7
6
8
2
4
9
7
1
3
5
7
1
3
2
5
6
9
4
8
2
3
9
5
1
4
7
8
6
8
4
7
9
6
2
3
5
1
1
5
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3
7
8
4
9
2
8
2
5
6
3
1
7
4
9
9
6
4
2
8
7
1
3
5
3
7
1
9
4
5
2
8
6
7
5
3
4
1
2
6
9
8
1
8
6
3
5
9
4
7
2
2
4
9
8
7
6
5
1
3
6
1
8
7
2
3
9
5
4
4
9
7
5
6
8
3
2
1
5
3
2
1
9
4
8
6
7
Sheet 13 of 20 · all expert sheets