8
9
7
3
1
9
6
6
5
5
1
2
7
4
7
8
2
3
9
3
1
5
8
1
9
8
4
5
4
8
7
5
"In mathematics the art of asking questions is more valuable than solving problems." — Georg Cantor
"In mathematics the art of asking questions is more valuable than solving problems." — Georg Cantor
The 9×9 Sudoku grid contains exactly 9 rows, 9 columns, and 9 boxes — each a 'house' — giving 27 houses in total.
The 9×9 Sudoku grid contains exactly 9 rows, 9 columns, and 9 boxes — each a 'house' — giving 27 houses in total.