Great Dane

by George Barany and Alex Vratsanos / Edited by Jeffrey Harris

This Tuesday-ish puzzle was published in the September 20, 2013 issue of The Chronicle of Higher Education. After solving the puzzle (spoiler), you may want to read this article, called to my attention by Barbara Barany, which provided the initial inspiration to pursue this theme.

Click here (scanned from the printed issue) or here (created from Across Lite) to view or download the puzzle in PDF format; here to download it as a puz file; here to download it as an ipuz file [requires the free Puzzazz app to solve]; here to solve the puzzle interactively (thanks to Jim Horne); here for the solution. During the development of the puzzle, we benefited from the insights and patient test solving of Noam Elkies, Michael Hanko, Martin Herbach, Ken Leopold, and Sandy Lipsky.

If you want to tell others about this particular page, refer them to http://tinyurl.com/greatdanepuz

More puzzles here (all), here (science), and here (tributes).

E-mail barany@umn.edu to be added to a bcc distribution list.