Share this board.

Only the starting board is shared. Your answer and progress stay on this device.

Open a shared board.

Paste a shared puzzle link. Boards from 4 × 4 to 6 × 6 are supported.

Erase your work?

Given squares stay in place. You can undo this.

Room to grow.

1. Draw squares in white cells. Touching squares form a block.
2. Every block has exactly one square on an arrow.
3. Each arrow passes through at least two blocks.
4. Following the arrow, each block is the previous shape plus one square. Shift it, but do not turn or flip it.

Use dots to note empty cells. Arrow cells can hold squares; printed squares and shaded cells stay fixed.

Keyboard: arrows move; Space/Enter draw; X marks; C checks. Ctrl/Cmd+Z undoes; Ctrl+Y or Ctrl/Cmd+Shift+Z redoes.