PlaySudoku.us
Easy · Puzzle #873
2
6
7
6
5
9
2
1
2
8
3
6
7
5
9
3
8
1
9
2
5
7
1
2
6
3
6
2
9
7
4
8
3
5
1
3
5
6
4
5
3
7
9
8
1
6
The number of essentially different Sudoku grids, accounting for symmetry, is 5,472,730,538 — about 5.5 billion.
The number of essentially different Sudoku grids, accounting for symmetry, is 5,472,730,538 — about 5.5 billion.
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.