TCO18 Warsaw regional event will take place on May 12th. It will include an Algorithm competition round which will allow the top 10 scorers to advance to the Online Wildcard Round. You can read more about Algorithm rules here.
A lightning Marathon match MapRecoloring started on May 4th and will run for 3 days. It will be the first of TCO18 Marathon rounds, awarding TCO points for top 50 participants, as described here. It will also feature prizes for top 3 online participants and top 3 participants present at the regional event. I am the writer of the Marathon problem :-)