Complex sentence: The Queen's Gambit is one of the oldest known chess openings, it was mentioned in the Göttingen manuscript of 1490 and it was later analysed by masters such as Gioachino Greco in the seventeenth century.
Split into simpler sentences: The Queen's Gambit is one of the oldest known chess openings. It was mentioned in the Göttingen manuscript of 1490 and was later analysed by masters such as Gioachino Greco in the seventeenth century.