I whanau ia i Rosdzin, inaianei he waahanga o Katowice, Upper Silesia, ka neke ia ki Görlitz i te 1921. I te taenga mai o nga Nazis ki te mana i te tau 1933, ka rere a Baender, he Hurai, ki Prague, Czechoslovakia. I te marama o Noema 1937, ka heke ia ki La Paz, Bolivia. I takaro a Baender mo Bolivia i te 8th Chess Olympiad
i Buenos Aires i te tau 1939.