Robot Sort done
Mono Captcha done
Perls in the box done
Hubspot amulet done
remove unused lines
Moore Neighbourhood done
Life Counter local test passed
life counter: use cache
Life Counter online test passed
Stair steps done
can you pass done
colder warmer done
Buildings visibility done
Painting Wall done
Rotate Hole done
Earth Distances done
URL Normalization done
Web log sessions done
Convex Hull done
Spaceship landing strip done