PlaySudoku.us
Evil · Puzzle #73
5
8
7
5
6
9
6
2
9
1
7
2
9
2
8
4
8
6
3
3
1
7
1
7
8
4
Techniques used
- Naked Single
- Hidden Single
- Naked Pair
- Pointing Pair
- Box-Line Reduction
- Forcing Chains
- 2-String Kite
- XY-Chain
- W-Wing
- 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