Black and White

https://archive.org/stream/TheStrandMagazineAnIllustratedMonthly/TheStrandMagazine1911bVol.XliiJul-dec#page/n0/mode/2up

By T.R. Dawson. “The problem is for each White man to capture the corresponding Black man in such a way that the routes traversed by each man never come in contact with one another.”

Click for Answer