PlaySudoku.us
Medium · Puzzle #554
3
6
4
1
3
4
6
8
6
5
8
9
1
3
6
7
2
6
8
9
3
8
3
6
4
3
1
4
6
8
7
2
9
1
Can you identify the technique needed to make the next move before filling in any digit? Name it, then use it.
Can you identify the technique needed to make the next move before filling in any digit? Name it, then use it.
"I think, therefore I am." — René Descartes
"I think, therefore I am." — René Descartes