University Games Impossible 750-Piece Hook, Line and Sinker Puzzle Tackle the ultimate puzzling challenge with the Impossible 750-Piece Hook Line and Sinker Puzzle from BePuzzled This borderless puzzle has irregular edges, images that make it hard to tell which end is up, and includes 5 extra pieces that don't fit For an additional challenge there's a hidden image of a mermaid waiting to be discovered among the seashells The completed 750-piece puzzle measures 24'' x 24'' BePuzzled is more than just jigsaw puzzles - it's puzzle-plus