I finally scored in the 90s today, entering the Top 50, thanks to a new brute force algorithm written from scratch. This was the minimum achievement that I set for myself, and I finally did it.
It's only going to get harder from now on just to maintain this score and/or rank, not to mention climb the ladder further. Thankfully, I still have a few unimplemented ideas up my sleeve.
Brute force can only take you so far, though. At some point I'm going to need to explore significantly different approaches. Again, thankfully I already have a few in mind.