"That's a puzzle to me" is a saying meaning that "that's confusing to me" or "it puzzles me". "That's a puzzle to me" can also be taken literally. The pun says that people take beautiful pictures and cut them into pieces, and that's how puzzles get created. A puzzle is a toy that is designed to test a person's problem solving skills. The pun is playing on the word puzzle.
Some people take beautiful pictures and cut them into pieces . That ' s a puzzle to me .