PlaySudoku.us
Evil · Puzzle #163
5
4
7
4
7
8
9
8
9
3
6
5
2
4
5
6
1
9
4
3
3
6
5
8
5
3
2
Techniques used
- Hidden Single
- Naked Pair
- Pointing Pair
- XY-Wing
- Naked Single
- W-Wing
- XY-Chain
- Forcing Chains
- Pointing Triple
A Sudoku puzzle's 'information content' can be measured: a minimal 17-clue puzzle encodes roughly 26 bits of information.
A Sudoku puzzle's 'information content' can be measured: a minimal 17-clue puzzle encodes roughly 26 bits of information.
The BBC produced a television game show based on Sudoku in 2005, during the height of the puzzle's popularity.
The BBC produced a television game show based on Sudoku in 2005, during the height of the puzzle's popularity.