I ended up "cheating" and screenshoting the cards and putting them in Exacalidraw so that I could move the cards freely and check what options I have, as well as trying to connect from the end. The interface is a bit too limited for that as it's hard to keep everything in your head.

This a personal favorite so far, definitely going to come back and play this from time to time. Loved it so much!

It taked a while to understand that I had to go from shape A to shape B, but once I got it was very entertaining.

Maybe add some highlighting for possible-to-move cards? Maybe also drag and drop cards to any place in the sequence. Nice game!