Fit pieces to the outline

Look at the target’s corners, long edges and inward notches. Keep the target visible as you work: you do not need to memorize it.

Every piece must be used once. Their combined squares must make the target shape in the same orientation, without overlaps or extra squares.

The target may be built anywhere on the board. Its position is free, but its shape and orientation must match.

These two L-shaped pieces can make a rectangle three squares wide and two squares high. Place A on the left with its two-square edge along the bottom. B fills the space above and to the right.

Compare the completed outer edge with the target. There can be more than one valid arrangement inside a shape; any arrangement that meets the rules counts.

Select a piece, then tap a board square. The dot on the piece marks the square that will land there. The dot is on an occupied square, which may not be the top-left corner of its bounding box.

At levels 3–8, Turn 90° rotates the selected piece clockwise. Check its new dotted square before placing it. Pieces cannot be flipped.

Use Undo or Remove to revise a placement. When you choose Check construction, that attempt is recorded and you can inspect one correct arrangement. Editing before the first check is allowed.