Sunglasses is a variation of Kapama puzzle. A rectangular or square grid contains lines ("bridges") in some cells. The goal is to blacken some cells to create pairs of figures (twin shapes). Twin shapes ("lenses") are symmetrical with respect to a bridge. Two lenses may not share an edge. Cells with bridges can not be blacken. Numbers outside the grid show the number of black cells in a corresponding row or column.
Cross+A can solve puzzles from 4 x 4 to 30 x 30.