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 275th scpchicken 🇵🇼 968 19 1ms 16 Jan 2022 275th QuincyNash 🇺🇸 968 19 1ms 21 Jan 2022 275th Bonjour27891 🇻🇳 968 19 1ms 27 Jan 2022 275th gurglemurgle5 968 19 1ms 25 Feb 2022 275th Alex-x90 🇺🇸 968 19 1ms 15 Mar 2022 275th Super-Pizza 🇨🇦 968 19 1ms 6 Apr 2022 275th voytxt 🇨🇿 968 19 1ms 9 Apr 2022 275th jared-hughes 968 19 1ms 18 Apr 2022 275th saito-ta 🇯🇵 968 19 1ms 18 May 2022 275th solmyr2000 968 19 1ms 12 Jun 2022 275th dvargas46 🇺🇸 968 19 1ms 23 Jun 2022 275th michael-pruglo 🇺🇦 968 19 1ms 6 Jul 2022 275th 4hg 🇺🇸 968 19 1ms 17 Sep 2022 275th Steffan153 🇫🇮 968 19 1ms 25 Sep 2022 275th DialFrost 🇸🇬 968 19 1ms 8 Nov 2022 275th trist224 🇫🇷 968 19 1ms 28 Nov 2022 275th DaCuteRaccoon 968 19 1ms 1 Dec 2022 275th MCausc78 🇺🇦 968 19 1ms 5 Jan 2023 275th BREMAUCY 🇫🇷 968 19 1ms 12 Jan 2023 275th Pimveha 968 19 1ms 16 Jan 2023 275th Betuaredead 968 19 1ms 18 Jan 2023 275th neel11235813 968 19 1ms 4 Feb 2023 275th Yewzir 🇧🇪 968 19 2ms 5 Feb 2023 275th stonethurg 968 19 1ms 10 Feb 2023 275th jmerle 🇳🇱 968 19 1ms 11 Feb 2023 275th gilufin 968 19 1ms 27 Mar 2023 275th klixel 🇨🇦 968 19 1ms 4 May 2023 275th signorovitch 968 19 1ms 5 Jun 2023 275th ndren 968 19 1ms 31 Jul 2023 275th adamnielson42 🇺🇸 968 19 1ms 16 Aug 2023 275th Siri-chan 968 19 1ms 17 Aug 2023 275th snoozingnewt 🇨🇦 968 19 1ms 15 Sep 2023 275th weliveinhell 🇭🇹 968 19 1ms 24 Sep 2023 275th CornerMercury 🇬🇧 968 19 1ms 27 Sep 2023 275th FlyingPenguin223 968 19 1ms 29 Sep 2023 275th madeforlosers 968 19 1ms 3 Nov 2023 275th minhtrancccp 968 19 1ms 2 Dec 2023 275th nsprd 968 19 1ms 24 Jan 2024 275th dokutan 968 19 1ms 26 Jan 2024 275th TheBaconPug 968 19 1ms 18 Feb 2024 275th siltyy 968 19 1ms 20 Mar 2024 275th sciencejiho 968 19 1ms 26 Apr 2024 275th HumanoidCPU 968 19 1ms 12 May 2024 275th xPMo 968 19 1ms 28 Jun 2024 275th Ralac07 🇦🇺 968 19 1ms 4 Jul 2024 275th elttil 968 19 2ms 10 Jul 2024 275th pardouin 🇫🇷 968 19 1ms 19 Jul 2024 275th helbling 🇨🇭 968 19 1ms 24 Jul 2024 275th CaedenHarper 🇨🇦 968 19 1ms 6 Aug 2024 275th Jacob385 968 19 1ms 6 Sep 2024 275th duckyluuk 🇳🇱 968 19 1ms 19 Sep 2024 275th b-illy 🇬🇧 968 19 1ms 29 Sep 2024 275th xyangst 968 19 1ms 8 Oct 2024 275th edsrzf 🇳🇿 968 19 1ms 23 Oct 2024 275th GolfingSuccess 🇬🇷 968 19 1ms 8 Nov 2024 275th lifthrasiir 🇰🇷 968 19 1ms 9 Nov 2024 275th wh3n3v3r 🇨🇿 968 19 1ms 18 Nov 2024 275th LostSyntax21 🇬🇧 968 19 1ms 21 Nov 2024 275th nomennescio 968 19 1ms 12 Dec 2024 275th Salutations45 968 19 1ms 12 Jan 2025 275th KasperKivimaeki 🇫🇮 968 19 1ms 25 Feb 2025 275th JunkIce 968 19 1ms 26 Feb 2025 275th plcc0 968 19 1ms 31 Mar 2025 275th commandz0 🇺🇸 968 19 1ms 3 May 2025 275th fuzzylojik-golf 🇺🇸 968 19 1ms 21 May 2025 275th gigaprofisi 🇺🇸 968 19 1ms 29 Jun 2025 275th ridingqwerty 🇺🇸 968 19 1ms 3 Aug 2025 275th qpwoeirut 968 19 1ms 23 Aug 2025 275th albanian-laundromat 968 19 1ms 7 Oct 2025 275th Babafaba 968 19 2ms 22 Oct 2025 275th luuumine 🇫🇷 968 19 2ms 28 Oct 2025 275th FortuiteMan 🇫🇷 968 19 1ms 1 Nov 2025 275th JOrE20 968 19 2ms 7 Nov 2025 275th emgordon154 968 19 1ms 18 Jan 2026 275th anter69 🇭🇺 968 19 2ms 1 Feb 2026 275th SectorCorruptor 968 19 2ms 5 Feb 2026 275th aksyristos 968 19 2ms 3 days ago 478th error256 964 12 57ms 1 Feb 2026 479th xsot 🇸🇬 961 25 34ms 28 Mar 2018 479th ConorOBrien-Foxx 961 25 32ms 10 Apr 2018 First Prev 401–480 of 5,783 Next Last
