Four corners and multi-line bingo
The named pattern is the win condition. A card that looks nearly complete has no special value unless the rules award it.
Straight line
Section titled “Straight line”A five-space horizontal, vertical, or diagonal line is common in 75-ball bingo. The free center can count when it lies on the line. Some games accept only specified directions.
| B | I | N | G | O |
|---|---|---|---|---|
| 2 | 17 | 32 | 47 | 62 |
| 5 | 20 | 35 | 50 | 65 |
| 7 | 22 | Free | 52 | 67 |
| 10 | 25 | 40 | 55 | 70 |
| 14 | 29 | 44 | 59 | 74 |
This line requires five printed numbers. The middle row of the same card needs four plus the free center. Only orientations accepted by the game count.
Four corners
Section titled “Four corners”Only the outer corner spaces count. Marks between them do not complete the pattern.
| 2 | 17 | 32 | 47 | 62 |
| 5 | 20 | 35 | 50 | 65 |
| 7 | 22 | Free | 52 | 67 |
| 10 | 25 | 40 | 55 | 70 |
| 14 | 29 | 44 | 59 | 74 |
Three corners are marked; 74 is missing. Marks on 17, 32 and 47 cannot substitute for that corner, even if the top row looks full.
Multi-line patterns
Section titled “Multi-line patterns”A game can require two or more distinct lines on one card. The rules should say whether lines can share the free space and whether completed lines must be horizontal, vertical, diagonal, or any combination.
In 90-ball bingo, one-line and two-line stages refer to completed horizontal rows on the same ticket. They are not the same as arbitrary five-space lines on a 75-ball card.
Frames, letters, and shapes
Section titled “Frames, letters, and shapes”An outside frame uses the card’s perimeter. Letter patterns, kites, postage stamps, blocks, and other shapes vary by room. Determine whether the example can be rotated, reflected, or placed anywhere on the card.
| 2 | 17 | 32 | 47 | 62 |
| 5 | 20 | 35 | 50 | 65 |
| 7 | 22 | Free | 52 | 67 |
| 10 | 25 | 40 | 55 | 70 |
| 14 | 29 | 44 | 59 | 74 |
The free center is outside the frame. For two horizontal rows on this example card, the top two need ten distinct numbers; the top and middle need nine plus the free center. For intersecting lines, count a shared square once.
Progressive stages
Section titled “Progressive stages”One round can begin with a simple target and continue toward a larger one. Confirm:
- whether called numbers carry forward;
- whether a prior winner keeps playing;
- how many prizes are available at each stage;
- how the prize changes after a call threshold;
- whether simultaneous claims split a prize;
- when the card is validated.
False claims and late calls
Section titled “False claims and late calls”A hall may penalize a false bingo or reject a claim after the next call. Online room software can mark and claim automatically. A score app may award a bonus for tapping a bingo button and subtract points for an incorrect claim.
Study the displayed target and claim rule before managing multiple cards. Pattern recognition, not visual fullness, determines the result.
Sources and room differences
Section titled “Sources and room differences”Gala documents lines, corners and blackout in its 75-ball guide. Sky Bingo limits its named “4 Corners” prize to 80-ball. That difference is a reason to read the specific product’s rules. The cards here are original teaching examples, not the rules of an offer.