The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 3 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 763rd jascotm 947 32 9ms 25 Mar 2021 763rd pbarath 947 32 9ms 26 Mar 2021 763rd neihousaigaai 947 32 9ms 28 Mar 2021 763rd dgambit 947 32 10ms 2 Apr 2021 763rd nsauzede 947 32 9ms 10 Apr 2021 763rd gnash117 947 32 9ms 11 Apr 2021 763rd 051 🇸🇬 947 32 10ms 23 Apr 2021 763rd didion0 🇺🇸 947 32 10ms 23 Apr 2021 763rd Sp3000 🇦🇺 947 32 10ms 26 Apr 2021 763rd aliakseikalosha 947 32 9ms 26 Apr 2021 763rd lochnessdragon 947 32 9ms 4 May 2021 763rd cbondurant 947 32 10ms 5 May 2021 763rd baby-steve 947 32 9ms 5 May 2021 763rd Stockoh 🇫🇷 947 32 9ms 8 May 2021 763rd peculiarination 947 32 9ms 11 May 2021 763rd pascscha 947 32 11ms 13 May 2021 763rd Frowny 947 32 10ms 18 May 2021 763rd domzymonz 947 32 11ms 21 May 2021 763rd enbyte 947 32 10ms 21 May 2021 763rd PYRiTEmonark 947 32 9ms 22 May 2021 763rd urojony 🇵🇱 947 32 10ms 26 May 2021 763rd clementblaudeau 947 32 10ms 27 May 2021 763rd Natanaelel 🇸🇪 947 32 9ms 28 May 2021 763rd Echriser 947 32 10ms 1 Jun 2021 763rd Larspolo 947 32 9ms 6 Jun 2021 763rd PhysicDev 🇫🇷 947 32 9ms 10 Jun 2021 763rd abba23 947 32 9ms 13 Jun 2021 763rd silvncr 947 32 10ms 15 Jun 2021 763rd mokymok 🇺🇸 947 32 10ms 15 Jun 2021 763rd SniperSmiley 🇺🇸 947 32 9ms 25 Jun 2021 763rd ScottHamper 947 32 9ms 1 Jul 2021 763rd kurkale6ka 947 32 10ms 15 Jul 2021 763rd glf818 947 32 9ms 22 Jul 2021 763rd madex 🇩🇪 947 32 9ms 28 Jul 2021 763rd RYNO8 947 32 10ms 8 Aug 2021 763rd Rhinozz 🇨🇦 947 32 9ms 9 Aug 2021 763rd schachmattmatt 947 32 9ms 11 Aug 2021 763rd mauro-1 🇮🇹 947 32 9ms 18 Aug 2021 763rd jacklynnepenick 947 32 9ms 19 Aug 2021 763rd Jonatan6 🇩🇰 947 32 10ms 29 Aug 2021 763rd olivermrose 🇺🇸 947 32 9ms 29 Aug 2021 763rd NicholasSeward 947 32 10ms 9 Sep 2021 763rd UladzimirSukharukau 947 32 10ms 15 Sep 2021 763rd Fmbalbuena 947 32 10ms 16 Sep 2021 763rd underscorelior 947 32 10ms 18 Sep 2021 763rd tegenton 947 32 10ms 4 Oct 2021 763rd cubed-guy 947 32 10ms 18 Oct 2021 763rd MarcMush 🇫🇷 947 32 9ms 20 Oct 2021 763rd danielweper 947 32 10ms 21 Oct 2021 763rd ozefe 🇹🇷 947 32 10ms 28 Oct 2021 763rd Bubbler-4 947 32 10ms 3 Nov 2021 763rd shellbertt 🇨🇦 947 32 10ms 3 Nov 2021 763rd ZakkkkAttackkkk 🇵🇭 947 32 9ms 3 Nov 2021 763rd aglahir1 947 32 9ms 5 Nov 2021 763rd CodyMiner 947 32 10ms 11 Nov 2021 763rd xy3 🇮🇪 947 32 9ms 18 Nov 2021 763rd Anonymousellama21 947 32 9ms 24 Nov 2021 763rd sleepyStick 947 32 9ms 4 Dec 2021 763rd LouisRustenholz 947 32 9ms 23 Dec 2021 763rd chayleaf 947 32 10ms 7 Jan 2022 763rd TimHuisman1703 947 32 10ms 7 Jan 2022 763rd razetime 947 32 9ms 12 Jan 2022 763rd QuincyNash 🇺🇸 947 32 9ms 14 Jan 2022 763rd CuboidRaptor 🇨🇦 947 32 10ms 18 Jan 2022 763rd lovernj 947 32 9ms 21 Jan 2022 763rd Bonjour27891 🇻🇳 947 32 10ms 25 Jan 2022 763rd thealtofwar 947 32 10ms 31 Jan 2022 763rd varhammer 947 32 10ms 31 Jan 2022 763rd aposteriorist 🇨🇦 947 32 9ms 15 Feb 2022 763rd RoscoeDaWah 🇬🇧 947 32 10ms 15 Feb 2022 763rd nick99nack 947 32 9ms 15 Feb 2022 763rd j-Ewan 947 32 9ms 16 Feb 2022 763rd MichaelMBradley 🇨🇦 947 32 10ms 16 Feb 2022 763rd guilhem-roy 🇫🇷 947 32 9ms 23 Feb 2022 763rd ValNyz 947 32 10ms 23 Feb 2022 763rd Great-Gamer 947 32 9ms 24 Feb 2022 763rd hellwue 947 32 9ms 2 Mar 2022 763rd mathisfun271 947 32 9ms 6 Mar 2022 763rd vodker1 947 32 10ms 7 Mar 2022 763rd gitbedd 🇬🇧 947 32 9ms 13 Mar 2022 First Prev 961–1,040 of 5,783 Next Last