Testing out the per day puzzle restriction posting

After my epic almost 40 minute battle to complete this puzzle the first time, I left it for a couple of hours to try and reduce my memories and completed it in under 8 minutes.
I'm still not quite sure what mistake I made - but I made it at least 5 times, I was almost at the point where I was going to fire up my solver and enter the puzzle by hand to verify the puzzle itself wasn't buggy.