Solved
+-----------------+
|6 3 7|9 2 8|4 5 1|
|2 9 1|6 5 4|3 7 8|
|8 5 4|7 1 3|2 9 6|
|-----+-----+-----|
|1 7 5|8 4 9|6 2 3|
|4 8 9|2 3 6|5 1 7|
|3 6 2|5 7 1|8 4 9|
|-----+-----+-----|
|5 4 6|3 9 7|1 8 2|
|9 2 8|1 6 5|7 3 4|
|7 1 3|4 8 2|9 6 5|
+-----------------+
Alcar...