You're shown three block shapes at the bottom of the screen. Drag any of them onto the 9x9 grid where they fit completely. When a full row, column, or 3x3 sub-grid is filled, it clears and you score points.
After placing all three blocks, three new shapes appear. The game ends when none of the offered shapes can fit anywhere on the board.
Start From the Corners - Filling corners first leaves the open center for flexible placement; it's much easier to fit blocks in the middle than to squeeze them into edges later.
Keep One Empty Row Open - Reserve at least one row or column as a workspace; it gives you room to maneuver large blocks that arrive unexpectedly.
Watch the Sub-Grids - Combo points come from clearing rows AND sub-grids in the same move; placing pieces near 3x3 boundaries creates these multi-clear opportunities.
Long Bars Are Stress Relievers - Save them for when you have one row almost full; they're the most reliable way to trigger a clean clear.
Rotate Mentally Before Dragging - The blocks don't rotate; if a piece doesn't fit one orientation in your head, it definitely won't fit on the board.
