OK, I also like these type of logic puzzles. I've never heard of the Linka Pix, but they remind me of the ordered pairs grid puzzles my teachers used to give us in Math. I have used them also. Is that what they are?

Yes, they probably are. Two squares with the same number are connected with a path of the same length as the numbers. The paths can't cross each other.
Conceptis puzzles form beautiful pictures when solved.