The Chess.wmv file you have requested: Media / Videos and Trailers / User Videos / May 2007 / C to D Titles / Chess Event - 104.95mb is not available. Perhaps try browsing all files for the game World of Warcraft and upload any files you want to share or are missing. This is the only information we could locate:
How to get to the Chess Event solo in a fresh instance. And also how to do the actual event.