EuroGraphics The Heart 1000-Piece Puzzle Box size: 10" x 14" x 2.37". Finished Puzzle Size: 19.25" x 26.5". The heart is the engine that brings blood everywhere in our body. Learn about this fantastic machine with this puzzle. Strong high-quality puzzle pieces. Made from recycled board and printed with vegetable based ink. This superior quality puzzle will delight and educate all at the same time.