Click on play button... The boy is playing on trampolene. The mother wants to go out and call the boy in. See if you can get the female out by dragging the central dot. Also try it on the male. Is there any gender discrimination?
The houe HIQR and F are defined as vertices of convex polygon. And hence F is free inside but bound when moving out. M is not included in list of convex polygon vertices. The trampolene on child are also defined as vertices of convex polygon.