Henry Ernest Dudeney/Puzzles and Curious Problems/101 - Finding a Square/Historical Note

Historical Note on Puzzles and Curious Problems by Henry Ernest Dudeney: $101$ - Finding a Square

W.W. Rouse Ball apparently commented on this puzzle as follows:

This application is original on Mr. Dudeney's part.

Digital properties are but little known to mathematicians, and we hope that his example may serve to direct attention to the method ... In a certain class of arithmetical problems it is of great assistance.

Sources

• 1932: Henry Ernest Dudeney: Puzzles and Curious Problems ... (previous) ... (next): Solutions: $101$. -- Finding a Square
• 1968: Henry Ernest Dudeney: 536 Puzzles & Curious Problems ... (previous) ... (next): Answers: $131$. Finding a Square