Two special chess events will take place this weekend as part of the Gran Fiesta UNAM 2012. The first event will be the Torneo Cuadrangular where Carlsen will meet Lazaro Bruzon, Judit Polgar, and Manuel Leon Hoyos. The tournament is a knockout event composed of mini-matches. On Friday at 17:30 local time (00:30 CET, 18:30 EST) the World number 1 will meet Lazaro Bruzon in the first semi final. Polgar and Leon Hoyos play at the same time on Saturday. The 3rd-4th place mini-final is Sunday at 11:00 local time, while the Grand Final of Torneo Cuadrangular starts at 17:00 the same day. The second event of Carlsen takes place the day of the mini-match Polgar – Leon Hoyos. At 12:00 local time Carlsen will play against The World in simultaneous games. The tournament will be a variant of vote chess. Three GMs will be suggesting what they consider to be the best moves in the game, while the audience will choose between them in a given time frame. Magnus will play on two boards, one of them against 2000 players in the Sala Magna Nezahualcoyotl, while on the other against thousands of internet spectators. To complete his visit in Mexico, Carlsen will give an open press conference at 12:00 the day after the Carlsen vs The World games. Official website of the competition