Tap two matching tiles to clear them. You can only pick a tile if nothing sits on top of it and at least one side is open.
Tap a tile to select it, then tap its matching pair to clear both from the board. A tile can only be picked up if there's no tile stacked on top of it, and if at least one side (left or right) is open β not squeezed between two other tiles. Clear the whole board to win! If you ever get stuck with no matches left, tap "Shuffle Remaining Tiles" to keep going.