Printable Expert Sudoku

Set echqno. 8 puzzles with an answer key, ready to print.

Expert puzzles are our hardest tier, with sparse grids usually in the mid-20s for givens. Expect to fill in every candidate and hunt for x-wings and swordfish. A printed copy and a sharp pencil is the classic way to tackle them.

Each free PDF has 8 puzzles, four to a page on US Letter paper, plus an answer key with every solution. Every puzzle has exactly one solution. A new set appears here every day, or you can grab a different set any time.

Puzzles in this set

Expert #1
5 1
1 7 9 4
3 4 6
2 4 5
1
1 7 2 9
5 9
6 3
3 9 8
Expert #2
1 6 3 7 4
4 5
3 7 8 9 6
1 9 2
6 4
9 8
3 6 4
1 5
4
Expert #3
9 1 8 4
1
3 4 2 5 6
2 1 8 7
4 7 9 2
7 8
1 8 7 5
6
5
Expert #4
1 5
3 9 1
9 8 4 7
2 6 4
4 1 7 3
5 9
7 8 4 6
3 7
2
Expert #5
8 1 7
2 1
6 8 5
7
3 4 7
9 5 6
2 4 3
4 6 1
9 5 4
Expert #6
3 8
4 1 9
7 4 5
9 6 4
7 1 2
2
2 8 1 3
7
6 8 5 1
Expert #7
2 5 8
6
5 4
3 8
5 6 7
4 7 9
3 4 1
2 9 1
1 6 2
Expert #8
8 2 6
2 5
4 3
3 9
1 2 6 8
4 1 5
4 7 1
5 7 3 1 9
9

Answers are on the last page of the PDF.

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Techniques for expert puzzles

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