Vaishali and Praggnanandhaa, first brother-sister duo to become

Grandmaster is the highest title or ranking that a chess player can achieve. The term is about a century old, and was initially used as a generic expression to describe a player who was better than just a master.

brother-sister Grandmaster duo: Sibling supremacy! R Praggnanandhaa & Vaishali Rameshbabu make chess history as first brother-sister Grandmaster duo, netizens hail it as 'remarkable achievement' - The Economic Times

R Vaishali-Praggnanandhaa script history, become first brother-sister grandmaster duo in chess.

Chess: 'Excited' R Vaishali hopeful of doing well in Candidates tournament- The New Indian Express

Chess: Grandmasters Vaishali and brother Praggnanandhaa create history

R Vaishali - Wikipedia

Vaishali becomes GM, joins Praggnanandhaa to form world's first brother- sister Grandmasters duo- Dinamani

Vaishali becomes GM

Indian Siblings Praggnanandhaa and Vaishali's Rise in Global Chess

Vaishali Rameshbabu: Indian chess siblings become first brother and sister duo to earn grandmaster title

Sister And Brother Become World's-First Grandmaster Sibling Duo - AsiaWire