The program Polyomino-7 offers you the following possibilities:· Play to more than 500 puzzles; · Create your own puzzles; · Save and load games; · Show legal move, inverse illegal move, shadow, contour; · Choose colors of: ink, background, contour; · Change scale of square; · Select a «skin» for display figures, 14 «skins» are included; · Print: current position, empty board and figures (for make a puzzle on paper); · Analyse puzzle by computer.