The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 8 days. Why not try and solve them ahead of time?
Abundant Numbers (Long) in all languages in bytes. 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 Bytes Time Submitted 560th KasperKivimaeki 🇫🇮 902 89 378ms 30 Nov 2025 562nd Shanethegamer 🇺🇸 901 75 115ms 19 Nov 2022 562nd emplv 🇱🇻 901 75 130ms 5 Dec 2022 562nd Yewzir 🇧🇪 901 75 111ms 28 Mar 2024 562nd fuzzylojik-golf 🇺🇸 901 75 100ms 28 Aug 2025 566th syntax-rules 901 76 328ms 15 May 2023 567th ovs-code 🇩🇪 901 86 476ms 12 May 2024 567th DialFrost 🇸🇬 901 86 483ms 23 Jul 2024 569th m-tkach 🇺🇦 901 89 49ms 4 Jan 2024 570th clockworknazo 900 55 32ms 2 Dec 2022 570th primo-ppcg 🇹🇭 900 55 23ms 2 Dec 2022 570th xsot 🇸🇬 900 55 29ms 1 May 2025 573rd MeWhenI 🇻🇦 900 81 44ms 22 Nov 2022 574th GolfingSuccess 🇬🇷 899 62 425ms 15 Jan 2024 574th GrayJoKing 🇦🇺 899 62 4,141ms 16 Jan 2024 574th neel11235813 899 62 443ms 27 Mar 2024 574th CornerMercury 🇬🇧 899 62 430ms 12 Oct 2025 574th Andriamanitra 🇫🇮 899 62 425ms 7 hours ago 579th davidwangd 899 64 208ms 6 Apr 2025 580th GrayJoKing 🇦🇺 899 68 2ms 19 Nov 2022 581st GolfingSuccess 🇬🇷 899 72 24ms 22 Feb 2026 581st GrayJoKing 🇦🇺 899 72 39ms 22 Feb 2026 581st frankgraziano 899 72 42ms 23 Feb 2026 581st edsrzf 🇳🇿 899 72 35ms 26 days ago 581st DialFrost 🇸🇬 899 72 36ms 25 days ago 581st Steffan153 🇫🇮 899 72 25ms 25 days ago 581st emgordon154 899 72 24ms 22 days ago 581st snoozingnewt 🇨🇦 899 72 24ms 19 days ago 589th Shanethegamer 🇺🇸 898 46 57ms 19 Nov 2022 589th GrayJoKing 🇦🇺 898 46 58ms 19 Nov 2022 589th JayXon 🇺🇸 898 46 59ms 19 Nov 2022 589th Steffan153 🇫🇮 898 46 100ms 19 Nov 2022 589th sisyphus-ppcg 🇦🇺 898 46 55ms 20 Nov 2022 589th MeWhenI 🇻🇦 898 46 58ms 20 Nov 2022 589th primo-ppcg 🇹🇭 898 46 58ms 20 Nov 2022 589th nwellnhof 🇩🇪 898 46 57ms 20 Nov 2022 589th janlelis 898 46 56ms 29 Nov 2022 589th stefangimmillaro 898 46 54ms 4 Dec 2022 589th prplz 🇦🇺 898 46 65ms 17 Jan 2023 589th ovs-code 🇩🇪 898 46 58ms 9 May 2023 589th DialFrost 🇸🇬 898 46 57ms 3 Jun 2024 589th mrondon8 898 46 105ms 2 Dec 2024 589th sean-niemann 🇺🇸 898 46 109ms 5 Feb 2025 589th pardouin 🇫🇷 898 46 58ms 10 Apr 2025 589th blaztoma 🇱🇹 898 46 58ms 13 Oct 2025 606th Irratix 🇳🇱 897 55 13ms 19 Nov 2022 606th GrayJoKing 🇦🇺 897 55 11ms 19 Nov 2022 606th voytxt 🇨🇿 897 55 10ms 20 Nov 2022 606th nwellnhof 🇩🇪 897 55 11ms 20 Nov 2022 606th Attero 🇸🇪 897 55 11ms 25 Nov 2022 606th dmrichwa 🇺🇸 897 55 12ms 2 Dec 2022 606th KrausRaus 🇺🇸 897 55 12ms 2 Dec 2022 606th inventshah 897 55 11ms 2 Dec 2022 606th didion0 🇺🇸 897 55 11ms 14 Dec 2022 606th ovs-code 🇩🇪 897 55 12ms 16 Dec 2022 606th tayloia 🇬🇧 897 55 11ms 12 Jan 2023 606th DialFrost 🇸🇬 897 55 11ms 8 Feb 2023 606th thisishowmymindworks 🇳🇴 897 55 11ms 11 May 2023 606th PatrickStephansen 🇿🇦 897 55 12ms 21 Jun 2023 606th Maznek 897 55 10ms 6 Jul 2023 606th MeWhenI 🇻🇦 897 55 11ms 21 Aug 2023 606th Argeento 🇵🇱 897 55 12ms 25 Aug 2023 606th itserasmus 897 55 11ms 25 Jan 2024 606th emgordon154 897 55 13ms 13 Jun 2024 606th fuzzylojik-golf 🇺🇸 897 55 12ms 6 May 2025 606th acollett89 897 55 11ms 21 Jul 2025 606th nathanadams 🇳🇿 897 55 11ms 6 Oct 2025 606th tigerdan2 🇩🇪 897 55 10ms 25 Oct 2025 606th biocommando 🇫🇮 897 55 13ms 27 Oct 2025 606th attila8192 897 55 43ms 6 Feb 2026 606th Lv0Sys 🇵🇱 897 55 13ms 26 days ago 632nd DialFrost 🇸🇬 897 73 8ms 10 Mar 2025 633rd kg583 🇺🇸 897 86 57ms 13 Feb 2025 634th primo-ppcg 🇹🇭 896 72 143ms 20 Nov 2022 635th nwellnhof 🇩🇪 896 112 286ms 11 Mar 2023 635th MeWhenI 🇻🇦 896 112 290ms 1 Jun 2023 635th m-tkach 🇺🇦 896 112 297ms 14 Jun 2023 635th stefangimmillaro 896 112 297ms 14 Jun 2023 635th Shanethegamer 🇺🇸 896 112 307ms 7 Feb 2024 635th Steffan153 🇫🇮 896 112 254ms 8 days ago First Prev 561–640 of 2,757 Next Last