The Detective Boys realize that the riddle is a reference to shogi and that the dragon refers to a promoted rook. They take the direction a rook is placed on the shogi board and escape the cave. The robbers are then apprehended by the authorities and Conan is taken to a hospital. At the hospital, the nurse reveals to Conan's friends that they ran out of Conan's blood type. Ran allows them to use her blood for Conan's blood transfusion and subsequently reveals that she knows Conan is Shinichi. A few days after Conan's surgery, Conan decides to tell Ran his true identity as Shinichi. Later that night, Haibara enters Conan's room and holds a gun towards him.