Like the 111×99 set there are just 17 images for 16 levels. And like the 111×99 set – I changed the color of lines for every image (though, the images are still all generated by my program without editing).
I spent much longer editing the images for this set though. Here’s a comparison:
Set | Board Size | Avg Lines | Changed | Sum LL |
111×99 | 10989 | 112.8 | 6.7 | 1929 |
111×109 | 12099 | 152.4 | 23.2 | 3004 |
This is a half-sized version of my favorite image from the set: