After GM Maxime Vachier-Lagrave had to cancel his participation in the Grandmaster Tournament in honor of the chesslegend Viktor Kortchnoi for personal reasons, we have the pleasure to announce the participation of GM Boris Gelfand, who was a good and close friend of Kortchnoi. From April 13th to April 17th 2017 the world elite of chess will meet again at the Kongresshaus Zurich and at the same time many chessfriends from all over the world are expected in a Open Tournament. Spectators are wellcome, the entrance is free.