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Hard · Puzzle #791
9
8
3
4
3
6
5
1
1
9
6
3
9
4
8
7
3
9
2
5
6
4
1
7
8
3
7
4
"Mathematicians do not study objects, but relations between objects." — Henri Poincaré
"Mathematicians do not study objects, but relations between objects." — Henri Poincaré
Start with Naked Singles — cells where only one digit can possibly go. They're the easiest wins.
Start with Naked Singles — cells where only one digit can possibly go. They're the easiest wins.