Chess Insider March, dedicated to the Candidates tournament, is a daily PDF and PGN magazine. So far 15 editions have been published, with a total of 250 pages of commentary. The annotators GM Christian Bauer, GM Vladimir Georgiev, GM Alexander Ipatov, GM Davorin Kuljasevic, GM Petar Arnaudov, and WGM Iva Videnova have covered all games so far of the tournament in Khanty Mansiysk.
Issue 16 will be sent out today with four new commented games. Annotators of the day are GM Bauer, GM Kuljasevic, GM Arnaudov, and WGM Videnova.
Until the end of the Candidates the total amount of GM commentary is going to exceed 300 pages. Get your copy for only 19,99 here