Advent of Code 2021 JavaScript / TypeScript completed not completed Day Name Completion 01 Who Says You Don't Need Derivations? 02 895269 Depth Units Under the Sea 03 A Four-In-One Encoding: Save Those Bytes 04 Bingo, But Not How Grandma Played It 05 Bresenham Simplified 06 The Underwater Bunnies: Counting Fish 07 A Very Shallow Dive Into Statistics 08 Some Kind Of Weird Sudoku 09 Finding the High Ground 10 A Linter From the First Principles 11 Hurrying Up the Stairs at Night With a Timed Light 12 Gotta Catch Them All: Submarine Cave Path Edition 13 Origami Secret Code 14 Polymer is the new nanotech 15 16 17 18 19 20 21 22 23 24 25