German-born French-English
Famous chessplayer 1st half of 20th century. Best known now for the "Nimzowitsch-system" of openings
Romanian-born French
Belarusian/Polish-born US
Lithuanian-born Russian
Hungarian-born Austrian
Polish grandmaster
Ukrainian-born Slovenian grandmaster and World junior champion, 2710
Polish
Ukrainian-born Israeli grandmaster, 2602