puzzles come with a difficulty rating. puzzles made in our home go through an additional bit of math called the anthony factor. with this, you multiply any difficulty rating by seven, then you have the adjusted anthony scale. as for what sorts of things necessitate this tweak, here are a few of things you might expect to happen between your puzzle-building sessions:

1. having large groups of the facing-up pieces flipped face-down.
2. having your neatly parted edge pieces mixed back in with the middle pieces.
3. having pieces moved from the puzzle table to other tables or the floor.
4. having pieces put together that have no business being together.
5. and lastly, and surely the most effective of his tactics, he takes apart already completed swaths of the puzzle.

but, on the good side:

1. you get a lot more puzzle for your dollar given the time spent assembling it
2. and you have a true and immense sense of achievement when you are able to outpace anthony's counter-measures and finally complete a puzzle.