Advent of Code 2019
Catawiki raffle
Congratulations to Zeyu Chen!

Thank you to everyone who participated, you made this a really fun challenge... and we hope you'll join us again next year!

Catawiki is happy to be sponsoring Advent of Code 2021.

Advent of Code is an Advent calendar of small programming puzzles for a variety of skill sets and skill levels that can be solved in any programming language you like. Every day from 1st to 25th December, there are two challenges. For each challenge you solve, you’ll be rewarded with 1 star.

We’ve set up a few private leaderboards for this challenge, where you can compete and hopefully win a prize through our raffle!

The skills required for this challenge are similar to those used by our Tech team at Catawiki to solve some complex development tasks that result from our continually increasing numbers of sellers and buyers (14 million monthly visitors and rising!). We’ve already implemented localisations for various European countries and we’ll be expanding even further, outside of Europe, in the near future.

Learn more about technology at Catawiki
How to enter
  • Create an Advent of Code account
  • Fill out the form through the link below and join one of our private leaderboards
  • Win at least 35 stars to enter the raffle
  • Win all 50 stars and get an extra raffle ticket
  • Only 1 participation per person. Catawiki employees are not eligible to participate in the raffle
  • Winner will be picked at random on January 7th at 12:00 CET
Prize for the raffle winner
  • €200 Catawiki voucher, and
  • €200 (or $ if that's your thing) Amazon gift card.
Ready to participate?

If you have any questions, contact j.lesner@catawiki.nl

Click here to enter the contest
透過網上拍賣讓所有人都能接觸不同特別物品
300個 每週的拍賣
Catawiki是歐洲增長速度最快的網上拍賣平台。有著每周300個80種不同類別的拍賣,Catawiki是購買及售賣特別物品的最佳之選。
194名 專家
拍賣是由我們的專業拍賣團隊精心編制的。 它們有助於保證多樣化的拍賣和高品質的拍賣品列表選擇。
14M 訪客
每個月,Catawiki歡迎來自世界各地的數百萬遊客。 我們的平台有17種語言,包括英語,德語,法語,荷蘭語,意大利語,西班牙語,中文和葡萄牙語。