Great
I make puzzles exactly like this on paper at school!
BTW
[0,1,0,3,0,3,0,3,0,3,0,3,0,3,0,3,0,0] [2,0,6,0,6,0,6,0,6,0,6,0,6,0,6,0,6,0] [0,0,0,0,0,0,0,0,0,4,0,0,0,0,0,0,0,6] [0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,5,0] [0,0,0,0,0,8,0,0,0,0,0,6,0,0,0,0,0,6] [0,0,0,0,3,0,6,0,0,0,0,0,6,0,0,0,5,0] [0,0,0,3,0,0,0,8,0,8,0,0,0,8,0,0,0,6] [0,0,8,0,0,0,5,0,5,0,4,0,5,0,0,0,5,0] [0,5,0,0,0,8,0,5,0,4,0,8,0,0,0,0,0,6] [4,0,0,0,0,0,6,0,2,0,4,0,0,0,0,0,5,0] [0,3,0,0,0,8,0,6,0,3,0,8,0,0,0,3,0,6] [4,0,0,0,3,0,6,0,3,0,3,0,0,0,8,0,5,0] [0,3,0,8,0,0,0,8,0,8,0,0,0,5,0,0,0,6] [4,0,0,0,4,0,0,0,0,0,4,0,5,0,0,0,5,0] [0,3,0,0,0,4,0,0,0,0,0,8,0,0,0,0,0,6] [4,0,0,0,0,0,8,0,0,0,0,0,0,0,0,0,5,0] [0,3,0,0,0,0,0,4,0,0,0,0,0,0,0,0,0,6] [4,0,4,0,4,0,4,0,4,0,4,0,4,0,4,0,5,0] [0,5,0,5,0,5,0,5,0,5,0,5,0,5,0,5,0,0]