Advent of Code 2022 with some use of ChatGPT to help solve the puzzles using Dart along similar lines to Simon Willison's Learning Rust with ChatGPT, Copilot and Advent of Code.
Take a look at the closed issues for how ChatGPT sometimes gets it right, and often gets things wrong.
I wrote up Learning (better) Dart with Advent of Code (and ChatGPT) to cover what I learned doing this (before giving up when the puzzles got too time consuming).