Diyan Danailov was born on 30 November 1974 in Bulgarian town of Shumen which is located about 90 km to the east of Varna.
He attended the Technical University of Varna and today lives in the capital.
World International Master, he has won several national titles and after earning the fourth place in the European Teams Championships of 2008, winning the bronze medal in the Bermuda Bowl in 2009 and the silver in the World Transnational Open Teams.
In 2017 he won the Cavendish Open Pairs and the Mitchell, in 2019 the Open Pairs at the European Open.
Today he is in add on a well-known bridge teacher.