We recommend

1. Non Stop Tournament, currently starting each Thursday at 17.00 hrs. CET (11.00 a.m. New York, 18.00 Moscow time, 20.30 Delhi time, 23.00 Beijing time).
Once the registration fee is paid, the system adds the purchased games to your account. You may open the position and solve a problem at exact start hour.
2.Immortal Tournament– starting in May.
Round-the-clock tournament. Instant play. 5-10 games with the prize pool starting from US$5,000
After paying the registration fee the systems draws a problem to be solved by the player; after subsequent payments it draws more problems. Apart from the given position the player receives the task description, time assigned for solving the problem, the amount of available prize and the corresponding title.
We recommend reading the Main Rules and Abbreviated Rules for both tournaments

Good luck.