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Evil · Puzzle #764
5
3
2
2
8
6
7
9
8
1
3
5
9
2
6
4
8
3
7
3
9
5
1
4
Techniques used
- Hidden Single
- Pointing Pair
- Box-Line Reduction
- 2-String Kite
- Finned X-Wing
- Forcing Chains
- Naked Single
- Naked Triple
- XY-Chain
- Naked Pair
- X-Wing
Group theory classifies Sudoku symmetries: the automorphism group of the 9×9 Sudoku grid has order 1,218,998,108,160.
Group theory classifies Sudoku symmetries: the automorphism group of the 9×9 Sudoku grid has order 1,218,998,108,160.
"The man who has no imagination has no wings." — Muhammad Ali
"The man who has no imagination has no wings." — Muhammad Ali