>>24767241Here's the most simple "advanced" technique, demonstrated with 2623 on a 20 square grid. First, imagine if every number in the row were as far left as possible (keep track of where the biggest number is). Then, imagine if every number in the row were as far right as possible. Anyplace where the biggest number overlaps itself has to be a correct space. Anything above a 10x10 grid completely revolves around this method.
