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Evil · Puzzle #731
9
6
4
1
6
4
2
6
9
4
2
8
5
5
3
8
7
2
1
7
3
9
7
8
"A mathematician is a device for turning coffee into theorems." — Paul Erdős
"A mathematician is a device for turning coffee into theorems." — Paul Erdős
The 4×4 mini-Sudoku is called 'Shidoku' and can be solved without any pencil marks — it's a common puzzle for children.
The 4×4 mini-Sudoku is called 'Shidoku' and can be solved without any pencil marks — it's a common puzzle for children.