"The four-tournament series, which will unfold throughout the year, features 22 of the world’s top players fighting for two spots in next year’s Candidates Tournament to select a challenger for the World Championship title.<br /><br />16 players that are playing in Riga this year:<br />Shakhriyar Mamedyarov<br />Maxime Vachier-Lagrave<br />Anish Giri<br />Wesley So<br />Levon Aronian<br />Alexander Grischuk<br />Hikaru Nakamura<br />Sergey Karjakin<br />Yu Yangyi<br />Peter Svidler<br />Veselin Topalov<br />David Navara<br />Jan-Krzysztof Duda<br />Harikrishna Pentala<br />Nikita Vitiugov<br />Daniil Dubov"