Although there are many puzzle caches placed, and even though some of the puzzles are pretty easy, these caches never seem to get as many hits as the run of the mill traditional caches.
We spend a lot of time working on puzzles. Both solving them, and creating new ones for our own caches. We have a whole lot of Discworld Series caches, but the puzzle caches amongst them don't get many finds, even though some are not that difficult to solve.
So ... we've decided to create a series of puzzles. When we are all done, there will be 81 of them; one for each D/T combination. If you complete the full series, you can pretty much tick off the "Fuzzy Matrix" as well. Hopefully, when you have solved this series, you will have some ideas on how to solve some of the other puzzles.
You can validate your puzzle solution with certitude.