5
9
8
7
1
4
3
1
6
2
8
8
9
4
5
7
9
3
6
5
7
9
3
8
6
2
2
9
5
6
8
3
6
5
3
1
The Times Sudoku Championship in the UK has been held annually since 2005, drawing hundreds of competitors.
The Times Sudoku Championship in the UK has been held annually since 2005, drawing hundreds of competitors.
"My brain is open." — Paul Erdős
"My brain is open." — Paul Erdős