PlaySudoku.us
Evil · Puzzle #189
9
2
8
1
3
2
4
3
1
4
8
3
9
5
4
5
3
2
8
7
5
8
1
Techniques used
- Hidden Single
- Naked Pair
- Pointing Pair
- W-Wing
- Box-Line Reduction
- Forcing Chains
- Naked Single
- XY-Chain
- Naked Triple
- X-Wing
Research shows that solving logic puzzles improves spatial reasoning — the same cognitive skill used by architects and engineers.
Research shows that solving logic puzzles improves spatial reasoning — the same cognitive skill used by architects and engineers.
"Life is what happens when you're busy making other plans." — John Lennon
"Life is what happens when you're busy making other plans." — John Lennon