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Evil · Puzzle #309
5
8
6
4
5
8
6
3
2
6
7
4
9
7
9
2
5
2
4
9
3
8
5
3
9
Finnish mathematician Arto Inkala created what is widely considered the world's hardest Sudoku in 2012.
Finnish mathematician Arto Inkala created what is widely considered the world's hardest Sudoku in 2012.
"You cannot teach a man anything; you can only help him find it within himself." — Galileo Galilei
"You cannot teach a man anything; you can only help him find it within himself." — Galileo Galilei