Draw one continuous path that visits every cell on the board exactly once.
The path traces every cell once, passing the numbered dots in order — ① before ② before ③.
- Click and drag across cells to draw. Drag back over the path to erase it.
- The path can only move to a cell next door — never diagonally, never skipping a square.
- Complete the path, hitting every cell once and every dot in order, and you've solved it.
