Kudos to OP for trying a hard problem and be frank about the hurdles. That's the way to learn. Try it, make mistakes, so what. We learned best from mistakes

Kudos to OP for trying a hard problem and be frank about the hurdles. That's the way to learn. Try it, make mistakes, so what. We learned best from mistakes and failures. Mistakes burn into our memory. We'll be better the next time.