You can now sign up to battle using Pokémon from the entire National Pokédex in the upcoming 2018 International Challenge March Online Competition. It’s the second big online test of Trainers’ battling skills using the 2018 Championship Series format. The competition goes from Friday, March 23, at 00:00 UTC, until Sunday, March 25, 2018, at 23:59 UTC. Trainers will be limited to 15 battles per day. Junior/Senior Division players (born in 2003 or later) are limited to playing between 6 a.m. and 11 p.m., based on the easternmost time zone in each player’s country.
The top players in each age division will receive Championship Points, which contribute toward the chances of earning an invitation to the Pokémon World Championships. Players must be opted in to the Play! Pokémon program and have a Player ID at the time the competition begins to be eligible for Championship Points. All qualified competitors will also earn 50 Battle Points.
You’ll need a Pokémon Trainer Club account. After you log in, you’ll be able to read and accept the regulations on the Pokémon Global Link. You’ll also need your own Pokémon Ultra Sun or Pokémon Ultra Moon video game and a Battle Team of eligible Pokémon. Accept the regulations on the PGL by Thursday, March 22, at 23:59 UTC, and get ready to battle!
Good luck, Trainers!
Source: Pokémon Global Link