{"version":"1.0","type":"link","title":"Three utilities problem - Newikis","description":"The three utilities problem, also known as water, gas and electricity, is a mathematical puzzle that asks for non-crossing connections to be drawn between three houses and three utility companies on a plane. When posing it in the early 20th century, Henry Dudeney wrote that it was already an old…","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400,"thumbnail_url":"https://thumb.wikimedia.org/wikipedia/commons/thumb/6/69/3_utilities_problem_plane.svg/1280px-3_utilities_problem_plane.svg.png","thumbnail_width":1280,"thumbnail_height":853}