The puzzles are on the official website
Solution are mostly in JS
- 2024 — [ ] in progress (18)
- 2023 — [ ] 18 start
- 2022 — [ ] 40 stars
- 2021 — [ ] 43 stars
- 2020 — [x] 50 stars
- 2019 — [ ] 26 stars
- 2018 — [ ] 45 stars
- 2017 — [x] 50 stars
- 2016 — [x] 50 stars
- 2015 — [x] 50 stars