Hi everyone,

happy holidays and welcome to the final 2023 edition of #fridaygeotrivia, our a social media geotrivia contest. We played on the final Friday of the month, Friday, 29th of December, at 17:00 Berlin time, 4pm London time, 11am New York time.

See how to play below.

The December 2023 geotrivia question:

Name three countries such that A shares a land border with B which shares a land border with C which shares a land border with A, but they do NOT share a tri-point (point where all three countries meet)

As an example: Germany 🇩🇪,, Belgium 🇧🇪,, and France 🇫🇷

"DE-BE-FR non-tripoint trio"


  • Only one answer per toot

  • As always you must include the hashtag #fridaygeotrivia and the emoji flag of the countries


#fridaygeotrivia is a game with two prizes:

  1. the sheer joy of geographic knowledge and pedantry.

  2. the bragging rights of getting the answer first.

The #fridaygeotrivia Mastodon thread:

The winner

The title went to @Jann! Second place was @antonia. Well done!

This month’s geotrivia answer:

  • Germany, Belgium, France
  • Kingdom of the Netherlands, Belgium, France
  • Kingdom of the Netherlands, Germany, France
  • Croatia, Montenegro, Serbia
  • Poland, Russia, Belarus
  • Poland, Russia, Ukraine
  • Lithuania, Russia, Belarus
  • Lithuania, Russia, Latvia
  • Brazil, Argentina, Bolivia
  • Mozambique, Zambia, Tanzania
  • Turkey, Azerbaijan, Georgia
  • Turkey, Armenia, Iran
  • If you count the Chunnel as a "land border" we can also accept UK, France, Spain (counting Gibraltar as part of the UK)
  • The exact point where Germany, Austria, Switzerland border each other is unclear. so happy to accept that as an answer as well

How to play

Anyone can join in, you just need a Mastodon account.

  • Follow us on Mastodon, our account is @opencage@en.osm.town

  • When the game starts we will post the question here on the blog and on Mastodon, and will embed the Mastodon question here. We highly recommend using a mastodon client you feel comfortable with. We’ve made the switch to the Elk client and are loving it, but use whatever works for you.

  • Reply to the question thread on Mastodon (it will be embedded above) using the hashtag #fridaygeotrivia in your answer.

  • Only one answer per response (don’t stuff multiple answers into a single reply).

  • Our definition of “country” is usually (it depends on the question) any place with an ISO 3166-1 alpha-2 code. Read more background about ISO and country codes in our guide.

  • To get full points for an answer it is good form not just to name the relevant country but (if possible) to include the emoji flags of the country.

  • While you can use a map, please do NOT use the internet to just search for an answer. That is cheating and will lead to seriously bad geokarma.

Some people have complained that the format is a bit chaotic and hard to follow. Yes. The mad chaos is part of the fun. Embrace it. The goal is just to have fun and learn. We win by playing

Thanks for playing, and see you in 2024!