ABSTRACT
In his “Perplexities” column for The Strand Magazine, Henry Dudeney posed a puzzle he called “Water, Gas, and Electricity”, accompanied by the illustration in Figure 1.1. Is it possible, he asked, that A, B, and C each have access to (W)ater, (G)as, and (E)lectricity, without their paths crossing? The Water, Gas, and Electricity puzzle. https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781315152394/76a56b35-285a-4240-990f-b454c3e374e6/content/fig1_1.tif"/>
