Since its sale for a record $450 million, the whereabouts of the “Salvator Mundi,” said to be painted by Leonardo da Vinci, has become one of the art world’s greatest mysteries. On Monday, London-based art dealer Kenny Schachter, writing for the website Artnews, offered answers: the painting now resides on the gargantuan yacht owned by powerful Saudi Crown Prince Mohammed bin Salman. Since its record-setting sale at Christie’s in 2017, the painting, in which Jesus Christ is depicted emerging from darkness blessing the world with one hand while holding a transparent globe in the other, has never been exhibited in public, triggering doubts about its ownership, whereabouts and authenticity.