What the Bingo Pattern Chart Actually Covers
A bingo pattern chart maps out every valid winning shape a card can form during a game. The simplest patterns — horizontal, vertical, or diagonal single lines — are where most rooms start. From there, patterns grow in complexity: the Four Corners pattern marks only the card's corner squares, while the Postage Stamp covers a two-by-two block in any corner. Letter-shaped patterns
like X, T, L, and U add another layer. Blackout, where every square on your card must be daubed, is the most demanding. Each room on filbetfun displays the active pattern prominently before the draw begins, so there is no guessing which shape counts.