The Hanayama Heart Cast Puzzle will certainly make an impression on one who has your heart (or just likes hearts)! This puzzle stands for the tight bond holding together the hearts of lovers all over the world. First: free the gold and silver hearts from the chain. Then: try your best to get them all back together. This puzzle, to be quite honest, is really tough. So here's to success in love and in puzzles! We would recommend tackling this puzzle with - yes, you guessed it - a loved one. Mensa rated: 4 out of 6 (challenging).