Bingo patterns at a glance
- A bingo pattern is the set of squares a player must complete to win a round, announced before the game starts.
- The most common patterns are any line, four corners, postage stamp, letter X, picture frame, and blackout.
- The free space counts as marked in any pattern that includes the center, except "hardway" games.
- With 25 cards in play, the first bingo takes a median of 22 calls for any line and 67 calls for a blackout (our simulation of 20,000 games).
- "Crazy" patterns can be completed in any rotation; "wild" patterns can appear anywhere on the card.
What is a bingo pattern?
A bingo pattern is the shape a player needs to mark to win a round. The caller announces it before the first call, so every player knows what they're aiming for. Patterns range from a single line of five squares to every square on the card, and changing the pattern between rounds is the easiest way to keep a bingo game interesting.
The patterns below are shown on a standard 5 × 5 card. Pink squares are part of the pattern, and the yellow outline marks the free space in the center, which counts as already marked.
16 common bingo patterns
Across, down, or diagonal. Shown: one row.
Uses the free space, so it needs 4 calls.
Any line that doesn't use the free space.
Any two complete lines.
Just the four corner squares.
A 2 × 2 block in any corner.
Both diagonals, including the free space.
Middle row and middle column.
Top row and middle column.
Left column and bottom row.
A corner stamp with a diagonal tail.
A 2 × 3 block anywhere.
A 3 × 3 block anywhere.
The ring around the free space.
Every square on the outer edge.
Every square: also called coverall or full house.
Some patterns can be completed in more than one place. "Any line" includes all 5 rows, 5 columns, and 2 diagonals, which is 12 ways to win. A postage stamp can go in any of the four corners, and a six-pack or block of nine can sit anywhere it fits, unless the caller names a specific spot.
Static, crazy, and wild patterns
Pattern names often come with a word that tells you where and how the shape can appear:
- Static: the pattern has one fixed position, like four corners or a picture frame.
- Crazy: the same shape counts in any rotation. A crazy T can point up, down, left, or right.
- Wild or anywhere: the shape can sit in any position on the card, like a six-pack or block of nine.
- Hardway: the free space doesn't count, so lines through the center aren't allowed.
If a pattern could be read more than one way, the caller should show it on a board or a printed card before starting.
How many calls does each bingo pattern take?
We simulated 20,000 games of standard 75-ball bingo to measure how many numbers are usually called before the first player completes each pattern. The table shows the median number of calls, which means half of games finished sooner and half took longer.
| Pattern | 1 card | 10 cards | 25 cards | 50 cards | Typical range, 25 cards |
|---|---|---|---|---|---|
| Any line | 42 | 26 | 22 | 19 | 14–28 |
| Hardway line | 47 | 31 | 26 | 23 | 19–33 |
| Postage stamp (any corner) | 48 | 29 | 24 | 20 | 15–32 |
| Four corners | 64 | 40 | 33 | 29 | 21–45 |
| Letter X | 70 | 55 | 50 | 46 | 40–57 |
| Picture frame | 73 | 65 | 62 | 60 | 56–67 |
| Blackout | 74 | 69 | 67 | 65 | 63–70 |
A few things stand out:
- More cards means faster games. With one card, a line takes a median of 42 calls. With 25 cards, someone gets a line after about 22.
- Four corners takes longer than a line. It has only one way to win and can't use the free space. With 25 cards, it took 33 calls versus 22 for a line.
- A postage stamp is almost as quick as a line (24 calls with 25 cards), because it can be completed in any of four corners.
- Hardway lines add a few calls (26 with 25 cards) because the four lines through the free space don't count.
- Big patterns take most of the game. A letter X took 50 calls, a picture frame 62, and a blackout 67 of the 75 numbers with 25 cards.
Word bingo follows the same math when every card uses the same number of words as balls. With fewer words in the list, games end sooner.
Which bingo patterns to use at a party
A good bingo session starts fast and builds to a big finish. For a party of 10 to 30 people:
- Warm-up: any line or postage stamp. Quick wins get everyone into the game.
- Middle rounds: four corners, letter T, or kite. Each takes a little longer and feels different.
- Finale: picture frame or blackout, with the best prize. Expect most of the list to be called.
Players can keep the same cards for every round. Just clear the marks and announce the next pattern. For young children, stick to lines and four corners on 3 × 3 or 4 × 4 cards, where games stay short.
New to running a game? Our bingo rules guide covers calling, checking a bingo, and handling ties.
Patterns on smaller cards
On a 4 × 4 card there's no center square, so there's no free space, and a line needs all four of its squares. Four corners, postage stamp, picture frame, and blackout all still work. On a 3 × 3 card, a line needs three squares (or two through the free space), and the picture frame is simply the outer ring of eight squares.
How we measured it
Our simulation played 20,000 games of 75-ball bingo. In each game:
- 50 standard cards were generated using the column ranges (B 1–15, I 16–30, N 31–45 with a free center, G 46–60, O 61–75).
- All 75 numbers were called in a random order.
- For each card and pattern, we found the call that completed the pattern, counting the free space as marked from the start. For patterns with several positions, like any line or postage stamp, the earliest completed position counted.
- The first bingo for 1, 10, 25, and 50 cards was the earliest finish among the first 1, 10, 25, or 50 cards. The same cards and call order were used for every pattern in a game.
We report the median and, for 25 cards, the range from the 10th to the 90th percentile. The random seed was 20260916. The simulation code and results data are published so anyone can check or rerun them.
Frequently asked questions
What is the easiest bingo pattern?
A single line is the easiest standard pattern. In our simulation of 20,000 games with 25 cards in play, the first line bingo came after a median of 22 calls. Four corners took 33 calls, even though it only needs four squares.
What is the hardest bingo pattern?
Blackout, also called coverall, is the hardest standard pattern because every square must be called. With 25 cards in play, the first blackout came after a median of 67 of the 75 numbers.
What is a hardway bingo?
A hardway bingo is a line that doesn't use the free space. Only the lines that avoid the center square count, so every square in the line has to be called.
What does crazy mean in bingo patterns?
A crazy pattern can be completed in any rotation. For example, a crazy L counts whether the L faces left, right, up, or down. A wild pattern can appear anywhere on the card, like a six-pack in any position.
What is a postage stamp in bingo?
A postage stamp is a 2 × 2 block of four squares in a corner of the card. Unless the caller says otherwise, any of the four corners counts.
How many calls does a blackout take?
A standard card needs all 24 of its numbers called, so a blackout takes at least 24 calls. In practice it takes far longer: with 10 cards in play, our simulation found a median of 69 calls for the first blackout.
Does four corners include the free space?
No. Four corners uses only the four corner squares, and none of them is the free space. That's why it takes longer than a line, which can use the free space.
Sources
- Arrow International, Bingo Game Patterns (pattern names used in bingo halls, including hardway, crazy, and coverall games).
- Alcohol and Gaming Commission of Ontario, Rules of Play: Bingo (patterns announced before each game).
- Calls per pattern: Bingo Card Maker Free simulation of 20,000 games (method above).