June 18, 2025

Puzzle Corner

Ready for a fresh set of puzzles? Click here for the July/August 2025 Puzzle Corner, brought to you by guest editor Ed Faulkner ’03. Send problems, solutions (by August 1), and comments to puzzlecorner@technologyreview.com. Editor emeritus Allan Gottlieb ’67 launched Puzzle Corner in 1966. Find back issues through 2022 at cs.nyu.edu/~gottlieb/tr and more recent back issues at technologyreview.com/puzzle-corner.

August 2023

Substack expands further into social networking with a new ‘Follow’ button

August 15, 2023
Substack is adding a new feature to make its platform feel more like a social network, as the company announced on Tuesday that users can now follow writers. The new feature gives users a to keep up with what a writer is doing with having to subscribe to their newsletter. The company says that since […]

Vlad Tenev shares Robinhood’s next chapter at TechCrunch Disrupt 2023

August 15, 2023
Robinhood launched a decade ago as a stock trading and investing app. During that time, it’s become a retail investment behemoth — but not without its share of controversy, including the GameStop trade freeze of 2021 and two rounds of layoffs last year. Add to that a declining user base and it begs the question, […]

Setapp announces plans to launch an alt app store for EU users

August 15, 2023
App subscription service Setapp is preparing to launch as an alternative app store, as soon as new EU regulations come into effect next year. The company is betting on the EU’s Digital Markets Act’s (DMA) rules that should allow users to install third-party apps on iOS without having to go through Apple’s App Store. However, […]