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Evil · Puzzle #573
6
1
9
5
1
5
2
6
7
9
2
4
6
1
2
3
7
9
5
8
6
9
3
4
2
5
After placing a digit, immediately check its row, column, and box for new naked singles.
After placing a digit, immediately check its row, column, and box for new naked singles.
"The greatest enemy of knowledge is not ignorance; it is the illusion of knowledge." — Stephen Hawking
"The greatest enemy of knowledge is not ignorance; it is the illusion of knowledge." — Stephen Hawking