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The arbiter's kit: what to bring to a chess tournament

Alexey Mudry · updated October 26, 2026
The arbiter's kit is everything an arbiter brings to a tournament in case something goes wrong. The clock batteries die, a pawn reaches the last rank and there is no spare queen, a dispute has to be written down and the players have taken all the pens. Below - a checklist in five sections and a table of what you can leave behind if the pairings, clocks, standings and results are run in the Vibe Chess app.

The arbiter's kit checklist by section

📄

Documents

  • ☐ the tournament regulations - 2 copies: one for you, one for the wall
  • ☐ the FIDE Laws: a printout or a file on your phone
  • ☐ the list of players with ratings and contacts
  • ☐ forms for recording a dispute and the arbiter's decision
  • ☐ scoresheets - for classical
♟️

Equipment

  • ☐ spare chess clocks - 1-2
  • ☐ batteries for the clocks
  • ☐ a spare set of pieces
  • ☐ extra queens of both colours - for promotion
  • ☐ table numbers
✏️

Stationery

  • ☐ pens - lots, people walk off with them
  • ☐ markers and paper for announcements
  • ☐ tape, scissors, sticky notes
  • ☐ a folder for signed forms
🔌

Tech

  • ☐ an extension lead with several sockets
  • ☐ a power bank and cables for different phones
  • ☐ a mobile hotspot in case the venue network goes down
  • ☐ an adapter for the projector or TV
🧰

For people

  • ☐ a first-aid kit: plasters, wipes
  • ☐ water and a snack - the arbiter does not leave the hall
  • ☐ a badge or noticeable clothing so the arbiter is easy to find
  • ☐ "quiet please" signs and the phone rule

Why extra queens and spare clocks

Two items whose absence most often puts an arbiter in an awkward spot:

  • • Extra queens. When a pawn reaches the last rank and the required piece is not on the table, the player stops the clock and calls the arbiter (Article 6.11.2 of the FIDE Laws). It is good if the arbiter has a queen of the right colour in their pocket rather than taking one from the next table. An upside-down rook instead of a queen is a rook, not a queen. How a pawn promotes - how the pawn moves.
  • • Spare clocks. The arbiter replaces a clock that is clearly defective and sets the time by their own judgement (Article 6.10.1). Without spare clocks the game stands still while a replacement is found.
At a tournament with the clock on phones it is still worth bringing spare mechanical or electronic clocks: if a player's phone dies, the game is finished on them without a pause.

What you can leave behind if the tournament runs in the app

Half of an ordinary arbiter's kit is for paperwork: printing pairings, collecting slips, copying out the standings. If the tournament runs in the Vibe Chess app, that part moves to the phone, and chargers and backup internet take its place.

ItemOrdinary tournamentTournament in Vibe Chess
Round pairingsprint and post every roundon everyone's phone and on the hall screen
Standingscopy out by hand or printupdates by itself, goes on the screen
Chess clocksa set per table plus sparesthe clock on the players' phones, mechanical ones as spares
Batteriesessentialfor the spare clocks
Result slipsone per game, every roundnot needed: players enter the score
Printeralmost essentialnot needed; standings as a PDF sheet
Laptop with pairing softwareessentialnot needed: pairings are in the app
Power banks and chargersdesirableessential: phones work all tournament long
Phone holdersnot neededif games are recorded with the camera
Backup internetdesirableessential
Scoresheets (classical)neededneeded
Spare pieces and extra queensneededneeded

Scoresheets for classical stay: the camera records the game, but that does not cancel the FIDE requirement to keep a scoresheet. More about what else you do not need to print - a chess tournament without paper.

The hall screen: the round's pairings by table on a projector
Pairings on the hall screen instead of printouts.
Tournament standings as a PDF sheet: places, points, Buchholz, Sonneborn-Berger, individual results
Standings as a PDF sheet - print only for the prize-giving.
The second page of the standings sheet: pairings and results by round
Pairings and results of every round.

Plan B: what to pack in case something breaks

Three things that break at tournaments most often, and how to cover them:

  • • The venue internet.A hotspot from the arbiter's phone or a separate mobile router. The app's clock works without a network, and a weak mobile connection is enough for pairings and scores. More - internet for a chess tournament broadcast.
  • • Phones ran flat. An extension lead by the wall, a power bank and USB-C and Lightning cables. A player with a flat phone is moved closer to a socket.
  • • The projector failed. Everyone has the pairings on their phone, so the tournament does not stop. Table numbers and a loud round announcement are the backup that never breaks.
A player thinking over a move, a phone with a chess clock beside the boardA tournament player over the board, a phone with the app's clock on the tableA player making a move, a phone with the chess clock beside the board
A Vibe Chess tournament in Moscow City: a phone with the clock at every board - chargers matter more than batteries.

A light arbiter's kit

In the Vibe Chess app pairings, clocks, standings and results live on phones, and the kit is left with spare clocks, queens and chargers. Create a tournament for free.

Frequently asked questions about the arbiter's kit

What should an arbiter bring to a chess tournament?

The regulations and the FIDE Laws, the list of players, spare clocks and batteries, spare pieces and extra queens, pens and stationery, an extension lead and chargers, a first-aid kit. For classical - scoresheets.

Why does an arbiter need extra queens?

For pawn promotion: if the required piece is not on the table, the player stops the clock and calls the arbiter. A queen in the arbiter's pocket saves time and avoids taking a piece from the next table.

Is a printer needed at a tournament?

At an ordinary tournament - almost always: pairings and standings are printed every round. If the tournament runs in the Vibe Chess app, pairings and standings are on everyone's phone and on the hall screen, and the final standings can be printed in advance or afterwards.

How many spare clocks should I bring?

One or two for a tournament of up to 50 players. At a tournament with the clock on phones spare clocks are needed too: in case a player's phone dies.

What if the internet goes down in the hall?

Turn on a hotspot from the arbiter's phone or a mobile router. The Vibe Chess clock works without a network, and a weak mobile connection is enough for pairings and scores.

Free

How to run a tournament without being an arbiter

No arbiter skills required. The app takes over the part that usually stops people from running tournaments at all: who plays whom in each round and who finishes first.

  1. 1Creating the event takes a minute
  2. 2Open registration and drop the link into the chat
  3. 3Pairings follow FIDE rules (Dutch system, the bbpPairings engine)
  4. 4Results go in with two taps and the table recalculates instantly
  • Swiss system. works for ten players and for fifty
  • Round robin. for a small group that wants to play everyone
  • Free meetup. for those who do not need a bracket at all

More than a bot: the app, FIDE rules and a TRF report

  • The app. Besides the bot there is an app - inside Telegram and simply at playvibechess.com/app: what is on in your city, the player list, a live table, the current round, your profile and game history - everything that is awkward to read as chat messages.
  • Pairings by FIDE rules. Pairings are computed by bbpPairings, an open-source engine implementing the Dutch system: score groups, floats on an odd field, colour alternation, no rematches, and no player gets a bye twice.
  • A TRF report. A finished tournament exports as a single file in the FIDE data exchange format - the one arbiter software and federations accept. Your profile stores the FIDE ID, national federation code, title, sex and date of birth for it.
  • Free. All of the above, with no subscriptions, paid plans or limits on the number of tournaments and players.

Full overview

Missing a feature? Message the developers

The bot is constantly improved based on real tournaments. If you need a feature that isn't there yet, message the developers right inside the bot with the /support command. Many features appeared exactly because organizers asked for them, and useful ideas get added quickly.

Alexey Mudry
Alexey Mudry · hosted 37 events for Vibe Chess · 157 reviews · rating 5.0

At the board since childhood: hazy about his rating, precise about every rook he has blundered. Counts an evening as a good one if the opponent stayed to talk afterwards instead of rushing off to check with an engine. Message →