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 Leftykap 947 32 10ms 23 Jan 2023 763rd SirFireball3521 947 32 9ms 27 Jan 2023 763rd bobxiong88 947 32 10ms 31 Jan 2023 763rd cedar-debater 947 32 10ms 1 Feb 2023 763rd ashtraypettingzoo 🇺🇸 947 32 9ms 13 Feb 2023 763rd KenanHanke 947 32 9ms 21 Feb 2023 763rd SectorCorruptor 947 32 10ms 24 Feb 2023 763rd 5cw 🇺🇸 947 32 9ms 27 Feb 2023 763rd zt14427 947 32 10ms 28 Feb 2023 763rd vrnprkh 947 32 10ms 3 Mar 2023 763rd adamnielson42 🇺🇸 947 32 10ms 4 Mar 2023 763rd ferociouswonderfulgrasseater 947 32 10ms 12 Mar 2023 763rd jeff-at-tamer-dot-codes 🇺🇸 947 32 10ms 13 Mar 2023 763rd quimey 947 32 10ms 15 Mar 2023 763rd GulgDev 947 32 9ms 21 Mar 2023 763rd tzlils 947 32 10ms 26 Mar 2023 763rd gilufin 947 32 9ms 27 Mar 2023 763rd badboj40 947 32 8ms 28 Mar 2023 763rd PeterTillema 🇳🇱 947 32 9ms 29 Mar 2023 763rd celiendonze 🇨🇭 947 32 10ms 3 Apr 2023 763rd markusgraube 947 32 9ms 11 Apr 2023 763rd Hortaros 947 32 9ms 15 Apr 2023 763rd LeeCamp 947 32 9ms 16 Apr 2023 763rd amadeusdotpng 947 32 12ms 27 Apr 2023 763rd DrPiranoid 947 32 10ms 28 Apr 2023 763rd SoraTenshi 🇩🇪 947 32 9ms 30 Apr 2023 763rd Demonarchet 947 32 10ms 1 May 2023 763rd kaptsanovb 947 32 9ms 4 May 2023 763rd ankeetparikh 947 32 9ms 5 May 2023 763rd Yewzir 🇧🇪 947 32 9ms 19 May 2023 763rd msbranicky 947 32 9ms 2 Jul 2023 763rd fourth-bit 947 32 9ms 3 Jul 2023 763rd jmerle 🇳🇱 947 32 10ms 4 Jul 2023 763rd fkantelberg 947 32 10ms 14 Jul 2023 763rd SB-945 947 32 9ms 30 Jul 2023 763rd HumanoidCPU 947 32 9ms 4 Aug 2023 763rd anderium 947 32 9ms 5 Aug 2023 763rd Xbot781 947 32 9ms 8 Aug 2023 763rd Crackson4 947 32 10ms 14 Aug 2023 763rd FortuiteMan 🇫🇷 947 32 10ms 15 Aug 2023 763rd Alessandro-Balconi 🇮🇹 947 32 9ms 16 Aug 2023 763rd adriweb 🇫🇷 947 32 9ms 17 Aug 2023 763rd Re-Adventures 🇮🇳 947 32 9ms 19 Aug 2023 763rd stackofbears 947 32 9ms 9 Sep 2023 763rd dranjohn 947 32 10ms 11 Sep 2023 763rd Azearia 947 32 9ms 16 Sep 2023 763rd Stanbroek 947 32 9ms 19 Sep 2023 763rd FlorianCassayre 🇫🇷 947 32 10ms 23 Sep 2023 763rd minhtrancccp 947 32 9ms 27 Sep 2023 763rd Malizma333 947 32 9ms 28 Sep 2023 763rd weliveinhell 🇭🇹 947 32 10ms 1 Oct 2023 763rd charliegaming 947 32 10ms 4 Oct 2023 763rd htareque 947 32 9ms 5 Oct 2023 763rd Ernest1338 947 32 10ms 7 Oct 2023 763rd m42km 947 32 9ms 7 Oct 2023 763rd Mr-McChicken 947 32 9ms 17 Oct 2023 763rd FlyingPenguin223 947 32 10ms 18 Oct 2023 763rd keelimeguy 🇺🇸 947 32 10ms 22 Oct 2023 763rd funnsam 🇭🇰 947 32 10ms 23 Oct 2023 763rd pde-bakk 🇳🇱 947 32 9ms 23 Oct 2023 763rd arctouch-cristiannevianna 947 32 9ms 1 Nov 2023 763rd speles 🇺🇦 947 32 9ms 5 Nov 2023 763rd Adrien-AM 947 32 9ms 8 Nov 2023 763rd lyphyser 947 32 9ms 11 Nov 2023 763rd VladislavGitter 🇪🇸 947 32 10ms 13 Nov 2023 763rd albanian-laundromat 947 32 10ms 16 Nov 2023 763rd GolfGPT 947 32 9ms 19 Nov 2023 763rd mikehanus 947 32 9ms 21 Nov 2023 763rd KadinSchultz 947 32 9ms 4 Dec 2023 763rd Pale-Vessel 947 32 9ms 6 Dec 2023 763rd 123mjb 947 32 9ms 8 Dec 2023 763rd 1231234md5 🇨🇳 947 32 10ms 10 Dec 2023 763rd dylanarmstrong 947 32 10ms 11 Dec 2023 763rd Creative0708 🇨🇦 947 32 10ms 16 Dec 2023 763rd FluffyFeline8 947 32 11ms 17 Dec 2023 763rd kkoenig 947 32 9ms 20 Dec 2023 763rd michelebastione 🇮🇹 947 32 10ms 20 Dec 2023 763rd ArenaGrenade 947 32 9ms 28 Dec 2023 763rd chartung17 947 32 9ms 1 Jan 2024 763rd Glinte 947 32 9ms 2 Jan 2024 First Prev 1,121–1,200 of 5,782 Next Last