Turn over a New Leaf
Solve Calendar on the first of the month.
Prime Time
Solve Prime Numbers or Prime Numbers (Long) on a prime day in a prime month.
Hugs and Kisses
Solve Tic-tac-toe on 14 Feb.
Pi Day
May the 4แตสฐ Be with You
Solve Star Wars GPT or Star Wars Opening Crawl on 4 May.
How about Second Pi?
Independence Day
Solve United States on 4 Jul.
Happy Birthday, Code Golf
Solve any hole on 2 Oct.
Vampire Byte
Solve Vampire Numbers on 31 Oct.
Twelvetide
Solve 12 Days of Christmas during 25 Dec โ 5 Jan.
[ 1 / 10 ] Date Specific
Like, Comment, Subscribe
Vote for (or against) an idea.
My God, Itโs Full of Stars
Star the Code Golf repository.
Patches Welcome
Contribute a merged PR to the Code Golf repository.
[ 0 / 3 ] GitHub
Interview Ready
Solve Fizz Buzz.
Alchemist
Solve Game of Life in Elixir.
Alphabet Soup
Archivist
Solve ISBN in any three languages that predate ISBN.
Assembly Required
Solve Seven Segment in Assembly.
Bird Is the Word
Solve Levenshtein Distance in any three of AWK, Prolog, SQL, Swift, Tcl, or Wren.
Caffeinated
Solve any hole in any two of Civet, Java, or JavaScript.
COBOWL
Solve Ten-pin Bowling in COBOL.
Dammit, Janet!
Down to the Metal
Solve any hole in both Assembly and Rust.
ElePHPant in the Room
Solve any hole in PHP.
Emergency Room
Solve ๐ in R.
Evil Scheme
Solve Evil Numbers or Evil Numbers (Long) in Scheme.
Fish โnโ Chips
Solve Poker in ><>.
Flag Those Mines
Solve Minesweeper in any three languages beginning with the letter "F".
Full Stack Dev
Solve CSS Colors in JavaScript, PHP, and SQL.
Go Forth!
Solve any hole in both Go and Forth.
Going Postal
Solve United States in PA-SC-AL.
Happy-Go-Lucky
Solve Happy Numbers and Lucky Numbers in Go.
Hextreme Agony
Solve Hexdump in Hexagony.
Horse of a Different Color
Solve CSS Colors in BASIC.
Inception
Solve brainfuck in brainfuck.
Jeweler
Just Kidding
Solve any hole in both J and K.
Mary Had a Little Lambda
Solve ฮป in any three of Clojure, Coconut, Common Lisp, Haskell, or Scheme.
Never Eat Shredded Wheat
Solve Arrows in languages beginning with the letters "N", "E", "S", and "W".
Off-the-grid
Solve Sudoku or Sudoku (Fill-in) in Hexagony.
Ouroboros
Solve Quine in Python.
Pangramglot
Solve Pangram Grep in languages whose combined names form a pangram.
Piรฑa Colada
Solve any hole in Berry, Coconut, and Elixir.
Ring Toss
Solve Tower of Hanoi in any nine languages containing the letter "O".
S-box 360
Solve Rijndael S-box in any Microsoft language.
Simon Sed
Solve Look and Say in sed.
Sinosphere
Solve Quine
Solve Quine
Sounds Quite Nice
Solve Musical Chords in any three of C, C#, D, or F#.
TeXnical Know-how
Solve any hole in TeX.
Tim Toady
Solve any hole in both Perl and Raku.
Typesetter
Under Pressure
Watt Are You Doing?
Solve SI Units in PowerShell.
When in Rome
Solve Roman to Arabic in any three of C, D, V, or VimL.
X-Factor
Zoodiac Signs
Solve Zodiac Signs in any three languages whose logo depicts an animal.