Re-assemble the original picture by clicking/tapping to move one tile it into the empty space.
1. Try solving the top row, then the left column, and repeat to shrink the playing area.
2. Move pieces that should go next to each other near each other, even if that's above or below.
3. Consider moving pieces clockwise or counter clockwise if you're stuck.
Still stuck? Watch a walkthrough to complete one scenario.