Article date: Nov 1959
Article title: How three modern mathematicians disproved a celebrated conjecture of Leonhard Euler [cover]
Mathematical Games column? Y
Book: 3. New Mathematical Diversions from Scientific American
Chapter: 14. Euler’s Spoilers: The Discovery of an Order-10 Graeco-Latin Square
This data confirmed? yes
Notes
Peter Rowlett (27 August 2022):
Peter Rowlett initial guess (Uncertain)
Peter Rowlett (28 October 2023):
I have seen this chapter and column side-by-side and they match.