There is a line in the movie Amadeus spoken by Emperor Joseph ll. The royal music-lover is giving young Mozart his critique, stating that there were "simply too many notes." That is how I feel about jigsaw puzzles...too many pieces.
That's why I like jigidi.com!
Using your bulova photo as an example, if I want to do a 540-piece (27 X 20) puzzle I can, or I can exercise the option of having it as simple as 4 pieces across X 4 pieces down, like the one above!