PlaySudoku.us
Evil · Puzzle #228
4
8
9
1
2
3
4
6
3
5
4
6
1
1
5
1
4
7
3
6
3
5
9
Techniques used
- Hidden Single
- Naked Single
- Naked Pair
- Naked Triple
- Naked Quad
- Pointing Pair
- Box-Line Reduction
- UR Type 1
- Finned X-Wing
- UR Type 4
- X-Wing
- XY-Wing
"The measure of a great scientist is not the answers they give but the questions they ask." — Unknown
"The measure of a great scientist is not the answers they give but the questions they ask." — Unknown
Practice solving puzzles at a difficulty level where you succeed 90% of the time. That's the zone of maximum skill growth.
Practice solving puzzles at a difficulty level where you succeed 90% of the time. That's the zone of maximum skill growth.