Complex sentence: His younger son, Høgni Egilstoft Nielsen, was considered among the most promizing chess players of Scandinavia in his age group in 2014 he won the Faroese Chess Championship for adults at the age of 16, and became the youngest ever to win the championship.
Split into simpler sentences: His younger son, Høgni Egilstoft Nielsen, was considered among the most promizing chess players of Scandinavia in his age group. In 2014 he won the Faroese Chess Championship for adults at the age of 16, and became the youngest ever to win the championship.