Calvin Klaasen

Calvin John Klaasen yo o tshotsweng ka 1987 ke motshameki was chess wa Afrika Borwa yoo tshotseng maemo a FIDE Master.

Ene le  Johannes Mabusela bane ba fenya metshameko ya 2017 South African Closed Championships, mme gape o tshameketse setlhopha sa South African Chess Olympiad team ka 2016  le  2018. Mubayiwa, Bruce (19 December 2017). "KZN's International Master (IM) Johannes Mabusela and WP's FM Calvin Klaasen co-champions at 2017 South African Closed Chess Championships Open". africachess.net.

 Bona tsebe e latelang 

 Chess in South Africa

 Metswedi