Well, I'm a little over half-finished with this hold so I figure it would be an appropriate time to comment on it. This is definitely a super fun hold and worth checking out. The focus here is definitely on tricky linchpin puzzles. And the puzzles are terrific! Very well crafted. They are by no means easy, but very satisfying to solve. This is the most enjoyable set of tricky puzzles I've seen in quite a while.
As for the content, this hold was mostly made before TSS so you won't see any post 5.0 elements in it. That being said, the hold definitely assumes that the player has intimate knowledge of serpent movement rules, movement order, and a couple of other advanced things like brain path-mapping. It's probably best to have played through Advanced Concepts before attempting this one. If you are fairly comfortable with those mechanics though you should definitely try this one out!
____________________________
Links to neat forum tools that I always have trouble finding:
Click here to view the secret text