Four Corners
Mark the four corners of the 3×3 grid.
30-Ball
Easy
How to win
Mark only the four corner cells: top-left, top-right, bottom-left, bottom-right.
Strategy tips
- Play a few cards — easy patterns complete fast, so more cards means more chances to be first.
- Turn on auto-daub — with a pattern this quick, you don't want to miss a single call.
- These rounds move fast — pay close attention to the numbers from the very first call.
Where you'll see this pattern
Four Corners appears in 30-ball games. Check the game description before each round to see which patterns are in play.
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