That darn Conway is persistent, isn't he?! That's right, Day 18 is looking like the return of Conway, but in 2 dimensions, and with 3 possible states (Open Ground, Wooded Acre, and Lumberyard) as opposed to the less complicated Alive or Dead we saw a few days ago.
It'll be interesting to see if the repeating semi-stable shapes that we see in a normal 2D Conway's Game of Life are present here or how having 3 possible states affects them.
Good luck! I wood love to see your solutions! 🎄