Complex sentence: The team first entered the Fejer County Championship in 1942/43, where in their first match they won 6-4 over the Mori Banyasz and then went on to win the championship.
Split into simpler sentences: The team first entered the Fejer County Championship in 1942/43. They won their very first match against the Mori Banyasz (6-4) and then went on to win the championship.