What a brilliant little puzzle - the highlight of a really good series. I worked out the sequence and then moved on to the next stage. I was really impressed by the work that was put into that.
I had to show it to the kids when I got home. They worked it all out themselves without any problems, and loved it too. I can only reiterate what Kermit and NJT have said - even if you don't do puzzles do this one.
The cache was a pretty quick find, but it took us longer than it should've. Bobcat said it wasn't on his side, so we changed places and it turned out it was.
Took the 3TF certificate.
#1336 TFTC (+fave point)