[1] Born in Bismarckhütte (now Chorzów), Upper Silesia, he won the Silesian Chess Championship in 1929,[2] and played for Silesia at second board in the 1st Polish Team Championship at Królewska Huta (Königshütte) 1929 (the Warsaw team won).
In Spring 1939, he took 2nd, behind Franz Mölbitz, at Café Victoria in Berlin-Kreuzberg.
[4] During World War II, he tied for 5-8th in the 1st General Government chess tournament at Kraków–Krynica–Warsaw 1940 (Efim Bogoljubow and Anton Kohler won),[5] took 12th at Munich 1941 (Europaturnier Munich 1941 chess tournament, Gösta Stoltz won),[6] tied for 10-12th in the 2nd GG-ch at Warsaw–Kraków 1941 (Alexander Alekhine and Paul Felix Schmidt won),[7] and won in the Kraków Championship in 1941.
[8] After the war, he lived in Berlin-Spandau, where he played in several tournaments.
[10] Mross took 7th at Hoechst 1955 (FRG-ch, Klaus Darga won).