Ferdinand Maack

Ferdinand Maack (1861–1930) was a German doctor, inventor and occultist. He invented Raumschach, the classic 3D chess game, first described by him in the Frankfurter Zeitung in 1907.^[1][2][3] He promoted the game with demonstrations, articles, specialist magazines^[a] and several books.^[b] He founded the Hamburg Raumschach Club in 1919, which remained active until World War II.

Notes

1. E.g. Raumschach.
2. Das Schachraumspiel: Dreidimensionales Schachspiel (printed 1907); Spielregeln zum Raumschach (1913); Raumschach: Einführung in die Spielpraxis (1919).^[4]