Puzzles

Death by Quarters
Puzzles

Death by Quarters

By Josh Feldman
It’s been a rough couple of months for me—a running injury has prevented me from hitting the roads this winter. So while the running gang was out there hitting the pavement, I was stuck at home being a lazy bum.

Multigraphs
Puzzles

Multigraphs

By Stephen Meskin
I came across the following interesting problem from the 61st Annual International Mathematical Olympiad (IMO), which was held remotely on Sept. 20 & 21, 2020. The IMO is the world’s leading mathematical competition for high school students.