Clojurians Log v2

If there something like ntho available or any suggestions about how to implement it?

I just need a logic express to check that an element is at a certain index of a vector

Never mind that was the wrong approach, I'll try a few more things first I might be close already

In short I would like to have something that given a scrabble configuration and a list of letters return all the possible valid words

So given with configuration "h_ll_" and letters "hello" it would return trivially just ("hello")

It can be modelled similarly to sudoku actually and I think I'm close