PlaySudoku.us
Expert · Puzzle #443
8
1
6
1
7
4
6
5
3
9
2
7
6
4
2
7
1
8
9
4
3
5
8
6
5
4
Techniques used
- Naked Single
- Hidden Single
- Naked Pair
- Pointing Pair
- Pointing Triple
- 2-String Kite
- XY-Chain
"An investment in knowledge pays the best interest." — Benjamin Franklin
"An investment in knowledge pays the best interest." — Benjamin Franklin
"The book of nature is written in the language of mathematics." — Galileo Galilei
"The book of nature is written in the language of mathematics." — Galileo Galilei