Alvar Alonso Rosell

{{Short description|Spanish chess player}}

{{Family name hatnote|Alonso|Rosell|lang=Spanish}}

{{Use dmy dates|date=October 2021}}

{{Infobox chess biography

| name = Alvar Alonso

| caption = Alonso in 2023

| country = Spain

| birth_date = {{Birth date and age|df=yes|1992|9|13}}

| birth_place = Figueres, Spain

| title = Grandmaster (2013)

| rating =

| peakrating = 2572 (March 2021)

| FideID = 2270544

}}

Àlvar Alonso Rosell (born 13 September 1992 in Figueres, Girona) is a Spanish chess Grandmaster. He is ranked 10th best chess player in Spain.{{Cite web |title=Alonso Rosell, Alvar - FIDE Chess Profile - Players Arbiters Trainers |url=https://ratings.fide.com/card.phtml?event=2270544 |website=ratings.fide.com |access-date=2020-05-19}}

He was champion of Spain in 2011, surpassing the player Miguel Illescas. Alonso Rosell also won other national championships; he was the 2004 champion of Spain in the U-12, the 2006 champion in U-14, the 2008 and 2009 youth champion of Catalonia, in 2009 champion of Spain in the U-18, and the 2011 runner up in Catalonia behind Marc Narciso. In 2014 he defeated Narciso to become the 2014 Catalonia chess champion.{{cite web |url=http://www.escacs.cat/competicio/historial/absolut |title=Absolut |publisher=Federació Catalana d'Escacs |accessdate=1 August 2014 |archive-url=https://web.archive.org/web/20141021222752/http://www.escacs.cat/competicio/historial/absolut |archive-date=2014-10-21 |url-status=dead}}

On 23 December 2018 he won the 5th Sunway Sitges Chess Festival by scoring 8/10, half a point more than strong grandmasters such as Vassily Ivanchuk and Dmitry Andreikin.{{Cite web |title=Alvar Alonso Rosell wins Sunway Open in Sitges |url=https://en.chessbase.com/post/sunway-sitges-2018-alvar-alonso |date=2018-12-24 |website=Chess News |language=en |access-date=2020-05-19}}