Rules

Single elimination
1/8, 1/4 and 1/2 - bo3 (first player to score 2 points wins)
Finals - bo5 (first player to score 3 points wins)

Traditional seeding rules - 1v8, 2v7, so on...
Seeding is based on the current (registration form closing time) ;duel rating: https://pastebin.com/Ks8Xz2JF

Start: 17:00 UTC+0
Each round starts 5 minutes after the last match of the previous round is finished. You will be notified of when to start by the role ping.
The winner of the match should report the score via the following form: https://forms.gle/3hVD6rPct4xPYcQ8A
The game should be forced drawn if not finished in 20 minutes and replayed with the new ;duel.

The general rules for duelling:
1. Don't look at tests
2. Check "hide tags for unsolved problems" mark in settings before the start of the match
3. Don't look at others' submissions/editorials