The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 5 days. Why not try and solve them ahead of time?
Quine in all languages in chars. Achievements Cheevos Holes Languages Medals Miscellaneous All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 ArkScript Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E APL Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Calendar Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz Continued Fractions CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 761st EthanGrant1 947 32 10ms 13 Apr 2022 761st Yareeeema 947 32 10ms 13 Apr 2022 761st jm600 947 32 9ms 14 Apr 2022 761st pyrolitic 🇮🇪 947 32 9ms 27 Apr 2022 761st tkr-sh 🇰🇵 947 32 10ms 28 Apr 2022 761st Romain-1 🇫🇷 947 32 9ms 28 Apr 2022 761st GeneralTwi 947 32 9ms 4 May 2022 761st MichalMarsalek 🇨🇿 947 32 10ms 6 May 2022 761st Ailko 🇧🇪 947 32 10ms 6 May 2022 761st andre-de-lorde 947 32 9ms 6 May 2022 761st Jaydosu 947 32 10ms 10 May 2022 761st ophact 947 32 9ms 11 May 2022 761st connorslade 947 32 10ms 13 May 2022 761st pengu1n-master 947 32 9ms 20 May 2022 761st Mortis66666 947 32 10ms 27 May 2022 761st AliceFord 947 32 9ms 2 Jun 2022 761st solmyr2000 947 32 9ms 12 Jun 2022 761st nullie 947 32 9ms 14 Jun 2022 761st k3w1k0d3r 947 32 9ms 22 Jun 2022 761st Educorreia932 947 32 9ms 22 Jun 2022 761st shinh 947 32 9ms 28 Jun 2022 761st dylan-dang 947 32 10ms 1 Jul 2022 761st BREMAUCY 🇫🇷 947 32 10ms 5 Jul 2022 761st michael-pruglo 🇺🇦 947 32 9ms 6 Jul 2022 761st shachy 947 32 10ms 15 Jul 2022 761st jroscoe5 947 32 9ms 21 Jul 2022 761st abrn 947 32 10ms 30 Jul 2022 761st InigoK 🇺🇸 947 32 10ms 2 Aug 2022 761st P-Quentin 🇫🇷 947 32 9ms 3 Aug 2022 761st 5quiwyrm 947 32 10ms 3 Aug 2022 761st hamhub7 947 32 9ms 4 Aug 2022 761st bthalheim 947 32 10ms 5 Aug 2022 761st jaxmattfair 🇺🇸 947 32 9ms 5 Aug 2022 761st vhoulbreque 🇫🇷 947 32 10ms 15 Aug 2022 761st kcinnu 🇱🇹 947 32 11ms 17 Aug 2022 761st commandz0 🇺🇸 947 32 10ms 18 Aug 2022 761st Liastrae 947 32 9ms 22 Aug 2022 761st tcql 🇺🇸 947 32 10ms 22 Aug 2022 761st Bananapants22 947 32 9ms 4 Sep 2022 761st trist224 🇫🇷 947 32 9ms 15 Sep 2022 761st 4hg 🇺🇸 947 32 10ms 17 Sep 2022 761st LogicalJoe 947 32 9ms 26 Sep 2022 761st pyuraii 947 32 9ms 27 Sep 2022 761st MaxElf999 947 32 9ms 27 Sep 2022 761st fredrik-bakke 🇳🇴 947 32 10ms 29 Sep 2022 761st suwat513 947 32 9ms 29 Sep 2022 761st TheBlupper 947 32 10ms 30 Sep 2022 761st georgehulme 947 32 9ms 6 Oct 2022 761st ldoodle 947 32 9ms 6 Oct 2022 761st aksyristos 947 32 11ms 7 Oct 2022 761st ValentinCassayre 947 32 9ms 8 Oct 2022 761st eshilo-draper 947 32 10ms 9 Oct 2022 761st jakobkordez 🇸🇮 947 32 9ms 13 Oct 2022 761st PogLop 🇨🇿 947 32 10ms 15 Oct 2022 761st Nicronmil 947 32 9ms 19 Oct 2022 761st garrisonhh 947 32 10ms 23 Oct 2022 761st AodhanDalton 947 32 10ms 24 Oct 2022 761st bonevbs 947 32 9ms 20 Nov 2022 761st Manitary 947 32 9ms 28 Nov 2022 761st DaCuteRaccoon 947 32 10ms 1 Dec 2022 761st nstearns96 🇬🇧 947 32 10ms 2 Dec 2022 761st TaserTheFox 🇺🇸 947 32 10ms 5 Dec 2022 761st Captain-Quack 947 32 9ms 14 Dec 2022 761st CatsAreFluffy 947 32 10ms 16 Dec 2022 761st hectordubuis 947 32 9ms 16 Dec 2022 761st mousetail 🇳🇱 947 32 9ms 19 Dec 2022 761st StefanHabel 🇨🇦 947 32 9ms 19 Dec 2022 761st daniel-montanari 947 32 10ms 20 Dec 2022 761st 4ndyJ 🇬🇧 947 32 10ms 21 Dec 2022 761st luni-moon 🇺🇸 947 32 9ms 23 Dec 2022 761st nayakrujul 947 32 9ms 24 Dec 2022 761st firegene 🇮🇪 947 32 9ms 2 Jan 2023 761st thehylian 947 32 10ms 4 Jan 2023 761st thatbirdguythatuknownot 947 32 10ms 4 Jan 2023 761st MCausc78 🇺🇦 947 32 10ms 5 Jan 2023 761st wimglenn 947 32 9ms 6 Jan 2023 761st zakariamouhid 947 32 10ms 10 Jan 2023 761st Betuaredead 947 32 9ms 14 Jan 2023 761st eiburns 947 32 10ms 21 Jan 2023 761st Leftykap 947 32 10ms 23 Jan 2023 First Prev 1,041–1,120 of 5,781 Next Last