How to host a lockout bingo tournament
Running a lockout bingo tournament takes about fifteen minutes of setup once you know the order to do things in. This guide covers choosing a bracket format, building a card that stays fair across every match, seeding players, and the rules you want settled before the first board goes live.
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Before you start
Lock your card before the event so its objectives cannot change between matches.
Decide your win condition and timer up front — changing it mid-bracket invalidates earlier results.
Agree how a disputed claim gets resolved before you need the answer.
Choosing a board size for an event
Board size is the main lever on match length, so pick it from your schedule backwards rather than by feel.
- 4x4: roughly 20-40 minutes per match. Good for large single-elimination fields that must finish in an evening.
- 5x5: roughly 1-2 hours. The standard competitive size and the right default for most events.
- 7x7 and larger: half a day or more. Reserve these for marathons and charity events rather than brackets.
Writing objectives that hold up under competition
A card that works for a casual match often falls apart in a tournament, because competitors will optimise anything ambiguous.
- Make every objective verifiable — if two people can disagree about whether it is done, rewrite it.
- Avoid objectives that depend on luck alone, since they turn a skill bracket into a coin flip.
- Spread difficulty so the board does not resolve into one obvious optimal route.
- Avoid objectives that can be completed by accident before a player has even seen the board.
Running the event as a broadcast
A tournament that is being watched has requirements a private match does not.
- Share only the watch code publicly — the join code lets someone take a player slot.
- Spectators are unlimited, so the watch link is safe to post anywhere.
- The pop-out view is designed for a browser source and stays readable when scaled down.
- Keep a scoreboard open between matches so the audience can follow bracket progress.
Setting up the tournament
Work through these in order. Each step depends on the one before it.
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Choose your bracket format
Single elimination is fastest and suits large fields or tight schedules. Double elimination is fairer and roughly doubles the runtime. Round robin gives everyone the most matches but only works for small groups. TCB's tournament builder supports brackets up to 64 players.
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Build the card you will use for every match
Open the card builder and either start from a curated game deck or write your objectives from scratch. Make sure it holds at least as many objectives as your board has squares — a 5x5 board needs 25. Aim for a mix of difficulties so that early claims are not all trivial.
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Lock the card
Locking freezes the objective list so it cannot be edited once the event is underway. This is the single most important fairness step: an unlocked card can be changed between rounds, which makes results across the bracket incomparable. A locked card can still be duplicated by anyone who wants to remix it later.
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Set the win condition and timer
Pick a line, blackout or most-squares-held win condition, and decide whether diagonals count. If matches need to fit a schedule, set a match timer and score on squares held when it expires. Write the choice down — every match in the bracket must use the same settings.
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Seed the bracket and share join codes
Add your players and seed them however you have agreed — by ranking, at random, or by a qualifier round. Each match generates its own join code and a separate watch code for spectators, so share the join code privately and the watch code publicly.
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Set up the broadcast view
If you are streaming, open the pop-out board view and add it to OBS as a browser source rather than capturing the whole page. It renders the board at a readable size with player colours, and it keeps chat and controls out of the shot.
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Agree the dispute rule before round one
Decide in advance what counts as proof of a completed objective and who arbitrates. The common approach is that a claim stands unless another player challenges it within the match, with the host as the final call. Settling this early prevents an argument from stalling the bracket.
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Run the rounds and publish results
Work through the bracket, advancing winners as each match resolves. Keep the watch link stable across rounds so spectators do not need a new link every time, and post the final bracket afterwards so results are on record.
Organiser questions
How many players can a lockout bingo tournament have?
TCB's bracket builder supports up to 64 players. Each individual match holds up to 10 players plus unlimited spectators, so most brackets run as one-versus-one or small group matches that advance into later rounds.
Should every match use the same card?
Use the same locked card for every match in a round at minimum, and ideally for the whole bracket. If you change cards between rounds, results are no longer comparable and seeding stops meaning anything. Locking the card is what makes this enforceable.
How long should I schedule for a tournament?
Estimate your per-match length from the board size, then multiply by the number of rounds, and add roughly fifteen minutes per round for setup and disputes. A 16-player single-elimination bracket on 5x5 boards is realistically a full day.
What happens if a player disconnects mid-match?
Players can rejoin an in-progress match with the same code and their claims are preserved, so a disconnect does not end their run. For a tournament, agree in advance how long the rest of the field waits before the match continues without them.
Can spectators see the board without joining?
Yes. Every match has a separate watch code that grants a read-only view. Spectators do not take a player slot and there is no limit on how many can watch, which is why the watch code is the one that is safe to post publicly.
Everything above is free to run. Build the card, lock it, seed the bracket, and share the watch link.