PlaySudoku.us
Easy · Puzzle #244
2
6
3
9
8
5
1
1
9
5
7
2
3
4
7
2
9
6
4
5
3
6
8
9
7
1
2
7
8
3
9
5
2
9
9
8
4
1
2
3
5
9
6
8
5
4
8
3
1
2
7
After finishing any puzzle, go back and find every naked pair and hidden single you used. Catalog your techniques.
After finishing any puzzle, go back and find every naked pair and hidden single you used. Catalog your techniques.
Box-Line Reduction: if all candidates for a digit in a row or column are within one box, eliminate that digit from the rest of the box.
Box-Line Reduction: if all candidates for a digit in a row or column are within one box, eliminate that digit from the rest of the box.