In 1939, he took 12th in Stuttgart (1st Europa Turnier, Efim Bogoljubow won). In 1941 he tied for 2nd-3rd with Ludovit Potuček, behind Jan Foltys, in Trenčianske Teplice (Trentschin–Teplitz, Trencsénteplic). In 1942, he took 2nd, behind Gösta Danielsson, in Munich (1st European Championship – Europameisterschaft, Wertungsturnier – Qualification Tournament).
After World War II, he took 3rd at Budapest 1947 (HUN-ch, Gedeon Barcza won). In 1949, he took 11th in Trenčianske Teplice (Gideon Ståhlberg won). In 1952 he tied for 3rd-4th in Międzyzdroje, and 11-12th in Budapest (Maróczy Memorial; Paul Keres won).
Awarded the IM title in 1950.
- : Kereső.hu * az online lexikon (címszó: Szily József) Archived 2007-09-27 at the Wayback Machine
- 1941 Archived September 27, 2007, at the Wayback Machine
- Gillam, Anthony J.:Munich 1942, European Chess Championship. The Chess Player, Nottingham. ISBN 1-901034-46-1
- (in Polish) Turniej Międzynarodowy Międzyzdroje 1952
- Budapest 1952
- OlimpBase :: 10th Chess Olympiad, Helsinki 1952, Hungary
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