The painting portrays architect hans christian genelli (with a pipe); archeologist aloys hirt; gustav adolf von ingenheim (son of king friedrich wilhelm ii. And countess voss); painter friedrich bury; the artist himself (at the window), count friedrich wilhelm von brandenburg (son of king friedrich wilhelm ii. And countess doenhoff). Object Type: painting. Date: between 1818 and 1819. Dimensions: 38.5 × 44 cm (15.1 × 17.3 in). Medium: oil on canvas. Collection: Alte Nationalgalerie. Johann Erdmann Hummel Schachpartie