The pieces in this puzzle are very interesting! They are not in the rows & columns grid of a standard puzzle. Things like 2 pieces coming together to make the tab of another puzzle piece and some pieces nestled together to be locked in by other puzzle pieces. Definitely very different! Never quite knew what to expect with this puzzle.
We worked this puzzle from the bottom up, and once we got to the upper third, we ended up sorting the pieces by color in order to make it go faster. And even then, it was difficult to put together. Definitely put our minds and eyes to the test! It wasn't so difficult that we wanted to give up on it, though.