How to Run a Blitz Chess Tournament

A blitz night is the easiest chess event you will ever run. Games last minutes, a whole Swiss fits in an evening, and nobody sits around waiting for the slowest board. This guide covers how to run a blitz chess tournament from start to finish: which time control to pick, how many rounds you can fit, how many clocks you need, and the few rules worth announcing before round 1.

1 Pick Your Blitz Time Control

Blitz means each player has 3 to 10 minutes for the whole game. A time control is written as minutes plus bonus seconds: 3+2 means 3 minutes each, and 2 seconds are added to your clock after every move you make. If the bonus idea is new to your players, our guide to what 3+2 means in chess explains it in a minute.

Three controls cover almost every club, pub and school blitz event:

• 3+2 (the safe pick): fast, but the 2 second bonus means nobody loses a won position purely because their hand is slow. Best for mixed groups. Open a 3+2 clock.
• 5+0 (the classic): 5 minutes each, no bonus. Easy to explain and easy to set on any clock. The last minute can get frantic. Open a 5+0 clock.
• 3+0 (for experienced players): very fast, with a lot of games decided on time. Great fun for regulars, a bit stressful for beginners. Open a 3+0 clock.

Not sure where blitz ends and bullet or rapid begins? See bullet vs blitz vs rapid for the limits of each.

2 Plan the Rounds and the Night

The question everyone asks is "how long will this take?" A round lasts as long as its slowest game, plus a few minutes to enter results and pair the next round. Here is a realistic plan per round:

Time control	Longest normal game	Plan per round	5 rounds
3+0	6 min (it cannot go longer)	10 min	About 50 min
3+2	9 to 10 min for 40 to 60 moves	15 min	About 1h 15m
5+0	10 min (it cannot go longer)	15 min	About 1h 15m
5+3	14 to 16 min for 40 to 60 moves	20 min	About 1h 40m

Worked example: 16 players, 5 Swiss rounds at 3+2

Sixteen players is a lovely blitz field. A Swiss needs 5 rounds for 16 players to produce a clear winner, which you can check in the free Swiss rounds calculator. Your evening looks like this:

• Sign-in and setup: 15 minutes
• 5 rounds at about 15 minutes each: 75 minutes
• Results and prizes: 10 minutes
• Total: about 1 hour 40 minutes, so a 7:00 start is done before 9:00

Want to try other numbers? The tournament duration calculator gives a quick estimate for any field size and format. Because blitz games are so short, many clubs add an extra round or two on top of the usual count. That is fine, it just means more games for everyone.

3 Count Your Clocks

Blitz without clocks does not work: the clock is the whole point. You need one clock per board, which is half your players, rounded down. For 16 players that is 8 clocks. With 17 players it is still 8, because one player has the bye each round.

• Digital clocks are best, because they handle the 2 second bonus for 3+2 by themselves.
• Old wind-up clocks only work for games with no bonus, like 5+0 or 3+0.
• Short of clocks? Any phone or tablet can run the free online chess clock. Lay it flat between the players and tap your side after each move.

Need boards and sets too? Our chess tournament equipment list covers what to buy and what to borrow.

4 Announce the Blitz Rules in Plain Words

Blitz arguments are almost always about two things: the clock and illegal moves. Read these out before round 1 and most of them never happen.

The clock

• Press the clock with the same hand you moved with. No moving with one hand and slamming the clock with the other.
• Your move is not finished until you press the clock.
• If your time runs out, you lose, as long as your opponent notices and says so. The players spot it, not the organiser.
• Except: if the player with time left cannot possibly checkmate (for example they only have a king left), the game is a draw.
• If both clocks show zero and nobody can tell who ran out first, call it a draw.

More detail on flags, bonus time and delay is in our guide to chess clock rules.

Illegal moves

In blitz, someone will leave their king in check sooner or later. Pick one rule and say it out loud:

• The official way: the illegal move is taken back, the player must make a legal move instead, and the opponent gets some extra time. A second illegal move by the same player loses the game. This is how official FIDE rules work today.
• The pub way: if you make an illegal move and press the clock, your opponent can claim the win straight away. Simple and popular in casual clubs, but harsh on beginners.

For schools and mixed groups, use the official way. Touching a piece still means you have to move it, the same as slower chess: see the touch move rule.

5 Keep the Rules Arbiter-Light

A club, pub or school blitz night does not need a qualified arbiter. It needs one person everybody agrees has the final word. A few habits keep that person's job easy:

• Players call their own flags and illegal moves. Spectators stay quiet, even when they spot something.
• Stop the clocks for a dispute, then call the organiser over. The organiser decides, and that decision is final.
• No score sheets. Nobody writes moves down in blitz, so disputes are settled on what is on the board and the clock.
• Both players report the result at the end of each game, so nothing is entered twice or wrongly.
• Late arrivals: decide before you start whether you add them for round 1 only, or not at all.

For kids, add one more: an adult watches the clocks in the final round, because that is where the tears happen.

6 Choose a Pairing Format: Swiss, Arena or Round Robin

Format	How it works	Best for
Swiss	Everyone plays every round, winners meet winners	8 to 60+ players
Arena	Fixed time window, a new opponent the moment you finish	Online, or with live software
Round robin	Everyone plays everyone once (or twice)	4 to 10 players

Swiss (the usual choice)

Swiss is the standard for blitz events in person. Nobody is knocked out, and after round 1 players with the same score meet each other, so games stay close. You can draw round 1 for free with the Swiss pairing generator, and our guide to the Swiss pairing system explains the later rounds.

Arena

An arena is what you see online: the event runs for a set time, say 60 minutes, and as soon as your game ends you get a new opponent. The most points when the time is up wins. It feels great, but in a room it needs someone (or something) pairing players the moment each board finishes, and some players end up playing far more games than others. Most in-person events run rounds instead.

Round robin

With 6 to 10 players, a round robin is perfect for blitz: everyone plays everyone, and there is no luck in the pairings. 8 players need 7 rounds, about 1 hour 45 minutes at 3+2. Many blitz clubs play a double round robin, where you meet each opponent twice, once with each colour. The round robin generator prints the full schedule.

7 Running It With ChessHost

If you would rather not pair by hand between 15 minute rounds, ChessHost is free pub chess tournament and club software that runs in a browser. Here is how a blitz night works in it:

1. Create the event: "New Tournament", give it a name, and pick the "Blitz" time control (5 min) or "Custom". New events are Swiss.
2. Players join by QR code: open "Invite Players", switch registrations to open, and put the QR on a table. Players join from their phone, no app and no account.
3. Rounds are worked out for you from the number of players, 5 rounds for 16. You can change it in "Edit Tournament" under "Number of Rounds".
4. "Start Tournament" draws round 1. Enter each result by tapping the winner's half of the board, or "Draw".
5. Show it on a TV: "TV Display" gives a link for any screen, so players find their board without crowding you.
6. Odd numbers are handled: if a player is left over, ChessHost gives the bye automatically.

ChessHost runs the pairings and the standings. The games themselves are played on real boards with real (or phone) clocks: it does not time the games, and it runs rounds rather than an arena.