Hi! I used what this site calls "offset coordinates." I didn't have any references, and started by trying to work out the problem myself. Squishing a cartesian coordinate grid with every second row making up the next offset column, felt like the most workable solution, and after my initial implementation, I went hunting for alternatives to see if there were ways that might be a better fit for me/Hive Time. In the end, I was happy with what I had and stuck with it.