That was fun, although I only beat medium and easy on this set only before I stopped. The chains were too confusing. I personally like regular sudoku better due to their being boxes, not serendipitous chains that just make my eyes hurt. Although the added dimension of the chains adds some novelty to sudoku, I rather like the boxes, rows, and columns. I wish people would also make matching diagonals, but people probably won't since there aren't as many permutations if you add that rule, while with Strimko there's far more permutations than in regular sudoku (I think. I'm not sure, since I'm just your average freshman in high school, and I haven't taken programming class yet.).