Vindal Mumford was a famous puzzlemaker, so it was no surprise that his will was in the form of an intricate puzzlebox with no apparent solution.
Experts examined the box for weeks, twisting and turning it and subjecting it to x-rays and other modern scanning technology.
But the box was still impenetrable and unsolvable.
Weeks… months… years went by, but no solution to the puzzle was ever found.
Not that Vindal left anything to be won by the solver of his final puzzle.
There’s not much money in creating problems without solutions, you know.
(Unless you’re a politician, of course.)