Download printable version of the puzzle here. A version of this article appears in print on , Section D, Page 9 of the New York edition with the headline: Complete the of 2020 (It’s a Rebus, Too).

Assume, for the purposes of this question, that thumbs are fingers, and that you are finger-counting with a total of ten digits. (Once solved, it should be straightforward to determine maximum ...

At first glance, the image appears to be of a caterpillar, but look closer. This clever puzzle challenges your eyes and mind.

Essay How Many Triangles Are There? Here’s How to Solve the Puzzle Counting will get you nowhere. Try a little combinatorics instead. Share full article 146 ...