Paul Keres v Hillar Karner, Parnu 1971. Mention of Keres, rated one of the best players never to become world champion, prompts the thought that a ship captain changed chess history. The great Estonian was aged 25 and in his prime in 1941 when the Germans overran his country. He continued to play professional chess, competing in wartime Nazi-run tournaments where the then title holder Alexander Alekhine, himself an exile from Russia, warned him not to go back to the Soviet Union because “they will chop your head off”. The problem for Keres was his family, still resident in Tallinn. So in 1944 he moved to Sweden, hoping to take advantage of the confusion, as the German army left, to collect his wife and children. His hired boat took him across the Baltic safely, but the Keres clan waited in vain for the return ship. Result-:he was arrested, threatened with execution, saved by his status as an Estonian sports hero, but probably coerced into a promise to avoid challenging the Russian Mikhail Botvinnik’s successful campaign for the world title. Keres was a stylist, who could demolish opponents with a single wellplanned coup. Here as White (to move) he is a pawn down, though the black king is in obvious danger. What was White’s winner?