Puzzle’s illustration is more indicative of difficulty. Number of puzzle pieces is a factor, but not the primary. Potting Shed Cats’ illustration is challenging due to repeating patterns.
Oh, cute Knitting Kittens! Should be an easy puzzle
Three adorable kittens playing with knitting supplies on a quilt. Deceptively harder than it looks due to multitude of patterns to sort. Safety tip: Strings are dangerous toys for cats to play with unsupervised.