Arianne Bo Caoili (/ˈæriːɔːn kaʊˈiːliː/ kah-WEE-lee; 22 December 1986 – 30 March 2020) was a Filipino-Australian chess player.

She held the FIDE title of Woman International Master, won the Oceania women's chess championship in 2009 and competed in seven Women's Chess Olympiads. Outside of chess, she was a financial consultant, and served as advisor to Armenian prime minister Karen Karapetyan.

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Chess

Born in Manila, Philippines, Caoili began playing chess at six years old. On 22 December 2000, she won the Asian girls under 16 championship in Bagac, Philippines. The following year, she scored 5½/9 points in the strong Conca Della Presolana tournament in Italy. 

Also in 2001, she was awarded the Woman FIDE Master and Woman International Master titles by FIDE. In the FIDE rating list of October 2002, Caoili achieved her peak rating of 2309.

In 2004 Caoili transferred chess federations to represent Australia. 

In 2009, she won the London Chess Classic Women's Invitational tournament with a score of 8/9, two points ahead of the runner-up.In the same year, Caoili won the Oceania Women's Zonal Championship and as a result qualified to play in the Women's World Championship 2010. However, she did not participate in this competition.

Caoili played for the Philippines in the Women's Chess Olympiad in 1998 and 2000. She represented Australia in the same competition in 2004, 2006, 2008, 2010 and 2012.

Television appearances

Caoili was one of the celebrity dancers in the fifth Australian season of Dancing with the Stars. Her professional dance partner was Carmelo Pizzino and she finished as the series' runner-up behind Anthony Koutoufides.

In an episode of the Australian TV show Deal or No Deal she won a car for the home competition entrant.

Personal life

From 2008, Caoili was in a relationship with one of the world's top chess grandmasters, Levon Aronian. 

They first met in 1996, at the World Youth Chess Championships in Las Palmas, and became friends in 2006, being introduced by their mutual friend Alex Wohl. Aronian and Caoili became officially engaged in 2015 and were married on 30 September 2017 at the 13th-century Saghmosavank Monastery, with then Armenian President Serzh Sargsyan and his wife Rita Sargsyan in attendance.

She spoke English and Tagalog fluently, and had studied for a Ph.D. at a German university on "Russian foreign policy, especially its economic and business relations with Armenia on a state and individual level". She worked as a consultant for a global consultancy firm. From 2013 until her death in 2020, Caoili lived and worked in Armenia.

Death

Caoili died on 30 March 2020 from injuries sustained following a car crash in Yerevan, Armenia, two weeks previously.