Swiss tournaments on Lichess: how they work

Arena is the format most people meet first, because it is what runs constantly on the site. It is not a Swiss tournament and does not behave like one.

The consequence that matters: in an arena the winner is often whoever played the most games, not whoever played the best. For a club championship that is the wrong incentive - you want a Swiss - how a Swiss is structured.

A Swiss on Lichess is created inside a team: the site ties the format to a group rather than leaving it open, which is exactly what a club needs.

1. 1Create a team, or use one you already have - a Swiss can only be run inside a team
2. 2Invite your players to the team in advance, not on the evening itself
3. 3Create the Swiss: set the time control, the number of rounds and the start time
4. 4Set the interval between rounds so that people have a moment between games
5. 5Share the link; players join from it and are paired automatically at the start

The team requirement is the step people miss. If your players are not in the team beforehand, the start of the event turns into ten minutes of admin while everybody joins - general organizing advice.

• They follow Swiss rules. Pairing by score, no rematches, colour balancing - the same logic as an over-the-board event - where pairings come from.
• Latecomers change the field. Players joining after the start are paired from the round they arrive in, which affects the tie-breaks.
• An odd field means byes. Exactly as over the board: somebody sits out each round and receives a point.
• Absent players lose on time. Someone who signs up and walks away does not simply vanish - they hand out free points for several rounds, which distorts the table.
• Tie-breaks are computed automatically. Which is one of the main practical advantages over running an event by hand.

The absent-player problem is the biggest practical difference from an over-the-board event: online, people sign up far more casually. Announce that withdrawals should be actual withdrawals, and remove obvious no-shows between rounds.

• Rated official events. An online Swiss does not produce a federation rating, whatever it produces on the platform.
• Events where fair play must be guaranteed. Detection systems work, but with a delay - for anything with real prizes, over the board is the answer - fair play over the board.
• Long time controls. Technically possible, but online attention does not hold: people leave tabs and lose on time.
• Replacing a club evening. Online works for a winter break or a distance league; it does not replace people in a room.
• Mixed online and over-the-board formats. One event, one medium - hybrid arrangements create arguments about conditions.

Where it genuinely shines: a club championship played over several weeks with one round a night, an event for players in different cities, or a way to keep the club alive between seasons - club events.