Hello world!

 +-----------+-----------+-----------+
 |     2     |     3     | 4         |
 |         7 |           |           |
 | 9         |         6 |     7     |
 +-----------+-----------+-----------+
 | 1         |         8 |     6     |
 |         4 | 5         |         3 |
 |     9     |     6     | 2         |
 +-----------+-----------+-----------+
 | 7         |         5 |     9     |
 |     5     |     2     | 8         |
 |         1 | 8         |         6 |
 +-----------+-----------+------------
 points 3249812              Sudoku #1