The fourth stage of the pro-gomoku site championship.

We continue the series of preliminary championship tournaments. Now – the penultimate stage.

In the first round – a circle in several groups. Registrants are grouped by lot. In each group no more than 8 people.
In the second round get 2 (in the case of equality of points – perhaps more) the winner from each group. They play a roundabout too. The first three places are determined by the number of points scored (in case of equality of points, additional circles are appointed between the disputing participants until 3 winners are identified).
Control – 3 days per turn.
Use of software is prohibited.