PlaySudoku.us
Expert · Puzzle #703
6
9
7
8
5
5
7
2
5
9
3
6
1
5
4
8
2
8
1
9
5
3
4
3
7
Techniques used
- Hidden Single
- Naked Triple
- Naked Single
- Pointing Pair
- Box-Line Reduction
- XY-Wing
- Naked Pair
- Skyscraper
A hidden pair in a row is often invisible until you track each digit separately through that row.
A hidden pair in a row is often invisible until you track each digit separately through that row.
"Give me six hours to chop down a tree and I will spend the first four sharpening the axe." — Abraham Lincoln
"Give me six hours to chop down a tree and I will spend the first four sharpening the axe." — Abraham Lincoln