3
6
9
7
8
4
5
8
6
6
4
8
1
4
5
3
2
8
2
5
8
1
2
4
6
7
4
8
5
1
9
2
6
5
8
Sudoku has no math — you could replace the digits 1–9 with any 9 symbols and the puzzle works identically.
Sudoku has no math — you could replace the digits 1–9 with any 9 symbols and the puzzle works identically.
Sudoku has no math — you could replace the digits 1–9 with any 9 symbols and the puzzle works identically.
Sudoku has no math — you could replace the digits 1–9 with any 9 symbols and the puzzle works identically.