Each
straight row and column must contain a 1, 2, 3,
4, 5 and 6. The two diagonal lines and each of the 6
sets of 6 squares must contain numbers 1, 2, 3,
4, 5 and 6. Check It highlights a wrong line,
so re-enter a number you previously input.
Solve a puzzle as quick as you
can, your lowest score is best!