She is a Women FIDE Master and has represented Trinidad and Tobago as the Board 1 player at a number of World Chess Olympiads.
Sunnucks represented England several times in Olympiads and team matches, including Great Britain vs. USSR 1954, the Anglo-Dutch match in 1965, and top board for the British Chess Federation (BCF) team at the 1966 Women's Chess Olympiad at Oberhausen.
This was the system used to reckon the year based on the four-year Olympiads, so for instance 480 BCE (the date of the Battle of Thermopylae) would be written ἔτει αʹ Ὀλυμπιάδος οδʹ, that is, the 1st year of the 74th Olympiad.
The forerunner to the Blind Chess Olympiads was a blind chess tournament held in Rheinbreitbach, Germany in 1958.
He is a FIDE Master and has represented Trinidad and Tobago as the board 1 player at a number of World Chess Olympiads.
His chief work was the Olympiads, an historical compendium in sixteen books, from the 1st down to the 229th Olympiad (776 BC to AD 137), of which several chapters are preserved in Eusebius' Chronicle, Photius and George Syncellus.
In the year 1994–1995, he received the Paul Erdős Award for his contributions to UK and international mathematical challenges and olympiads.