Knight's Tour - Numberphile
Why the open web links it
Explores the knight's tour problem in chess and its mathematical properties, including magic knight's tours.
Linked by 8 independent sites, 2 of them widely read in the 2026-10 crawl of the open web, including popsci.com, wimp.com, t5k.org, eisatopon.gr, neeldhara.com.