Kardos - from professional academics - has more than 400 chess problems composed. In particular, he focused on two Züger as well as self - and helpmates.
He also worked as an organizer. He was chairman of the Budapest chess puzzles Committee. Together with István Rago he gave from 1969 to 1975, the magazine " Feladványkedvelők Lapja " ( Journal of the problem friends ) out.
Set of game: 1 ... Sg3 2 Kxg6 gxh8S matt solution: 1 Ke6! Se3 2 DF8 ! gxf8S matt