PlaySudoku.us
Evil · Puzzle #618
8
7
6
4
2
4
8
1
3
6
4
3
8
3
2
1
9
5
5
7
8
2
9
Techniques used
- Naked Single
- Hidden Single
- Naked Triple
- Pointing Pair
- Box-Line Reduction
- UR Type 1
- Forcing Chains
- Naked Pair
- XY-Chain
Wayne Gould gave his puzzle software to The Times for free, triggering the global Sudoku craze. He made his money from books.
Wayne Gould gave his puzzle software to The Times for free, triggering the global Sudoku craze. He made his money from books.
The first modern Sudoku puzzle was published in 1979 by Howard Garns in Dell Pencil Puzzles & Word Games.
The first modern Sudoku puzzle was published in 1979 by Howard Garns in Dell Pencil Puzzles & Word Games.