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Puzzle 4
Hard sudoku 4
Hard sudoku 4
8
6
2
2
3
5
4
8
1
1
4
2
9
5
4
7
1
6
8
7
4
6
1
5
8
7
Tap a square, then type a number.
0:00
1
2
3
4
5
6
7
8
9
×
Notes
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Arrow keys move, 1 to 9 fill, backspace clears, and N switches pencil marks on.
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