The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 7 days. Why not try and solve them ahead of time?
Continued Fractions 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 1st MeWhenI 🇻🇦 1,000 37 6ms 19 days ago 2nd pardouin 🇫🇷 958 53 35ms 5 days ago 2nd Steffan153 🇫🇮 958 53 32ms 5 days ago 4th khvdm 954 85 15ms 29 Nov 2025 4th hellopir2 954 85 16ms 5 Dec 2025 4th Mukundan314 954 85 76ms 5 Dec 2025 4th hallvabo 🇳🇴 954 85 15ms 6 Dec 2025 4th sunleonid 954 85 73ms 17 Dec 2025 4th Seek64 🇩🇪 954 85 15ms 8 Jan 2026 4th pardouin 🇫🇷 954 85 81ms 15 Feb 2026 4th CornerMercury 🇬🇧 954 85 15ms 22 Feb 2026 4th kg583 🇺🇸 954 85 16ms 25 days ago 4th Steffan153 🇫🇮 954 85 15ms 25 days ago 4th plcc0 954 85 15ms 23 days ago 4th lukegustafson 🇺🇸 954 85 78ms 23 days ago 4th JayXon 🇺🇸 954 85 73ms 23 days ago 17th saito-ta 🇯🇵 953 49 46ms 24 days ago 18th Natanaelel 🇸🇪 948 50 155ms 24 days ago 18th Steffan153 🇫🇮 948 50 160ms 23 days ago 20th ovs-code 🇩🇪 935 55 3ms 20 Nov 2025 21st albanian-laundromat 932 87 10ms 19 Nov 2025 21st anter69 🇭🇺 932 87 10ms 27 Nov 2025 21st sean-niemann 🇺🇸 932 87 10ms 15 Jan 2026 21st CaedenHarper 🇨🇦 932 87 10ms 25 days ago 21st ndren 932 87 11ms 25 days ago 21st LostSyntax21 🇬🇧 932 87 10ms 24 days ago 21st emgordon154 932 87 10ms 23 days ago 21st npc1234cyber 932 87 11ms 22 days ago 21st fuzzylojik-golf 🇺🇸 932 87 31ms 3 days ago 30th JayXon 🇺🇸 930 90 18ms 20 days ago 31st pardouin 🇫🇷 926 80 481ms 15 Feb 2026 31st kg583 🇺🇸 926 80 399ms 25 days ago 31st Steffan153 🇫🇮 926 80 365ms 24 days ago 31st JayXon 🇺🇸 926 80 466ms 23 days ago 35th KatieLG 🇬🇧 921 88 10ms 23 days ago 35th snoozingnewt 🇨🇦 921 88 10ms 13 days ago 35th FortuiteMan 🇫🇷 921 88 10ms 11 days ago 35th dokutan 921 88 10ms 9 days ago 39th sean-niemann 🇺🇸 920 91 25ms 15 Jan 2026 39th rucin93 🇵🇱 920 91 29ms 15 Jan 2026 39th Steffan153 🇫🇮 920 91 12ms 23 days ago 39th lukegustafson 🇺🇸 920 91 17ms 23 days ago 43rd Just4FunCoder 911 89 11ms 14 days ago 44th fuzzylojik-golf 🇺🇸 903 82 401ms 38 hours ago 45th FortuiteMan 🇫🇷 902 41 6ms 11 days ago 46th rhdqor213 902 108 2ms 20 days ago 47th canissimia 🇦🇶 901 77 3ms 8 days ago 48th ovs-code 🇩🇪 898 52 45ms 20 Nov 2025 48th GolfingSuccess 🇬🇷 898 52 41ms 21 Nov 2025 50th JayXon 🇺🇸 895 78 137ms 21 days ago 51st GrayJoKing 🇦🇺 894 53 153ms 19 days ago 52nd albanian-laundromat 892 83 383ms 27 days ago 52nd emgordon154 892 83 380ms 23 days ago 54th saito-ta 🇯🇵 891 81 3ms 24 days ago 55th pardouin 🇫🇷 890 94 16ms 23 days ago 56th Steffan153 🇫🇮 890 97 1,290ms 23 days ago 57th edsrzf 🇳🇿 889 94 11ms 21 days ago 57th Steffan153 🇫🇮 889 94 11ms 20 days ago 59th ovs-code 🇩🇪 888 79 31ms 20 Nov 2025 60th 2bular 886 58 2ms 20 Nov 2025 61st antimon2 🇯🇵 886 86 429ms 23 days ago 62nd edsrzf 🇳🇿 886 92 860ms 20 days ago 63rd snoozingnewt 🇨🇦 882 84 393ms 13 days ago 64th MeWhenI 🇻🇦 881 53 46ms 19 days ago 65th saito-ta 🇯🇵 881 78 17ms 22 days ago 66th GolfingSuccess 🇬🇷 881 95 9ms 24 days ago 66th edsrzf 🇳🇿 881 95 15ms 21 days ago 68th AdrienHache 🇫🇷 879 134 464ms 24 days ago 69th sean-niemann 🇺🇸 878 79 2ms 14 days ago 70th albanian-laundromat 877 73 4ms 22 days ago 71st Steffan153 🇫🇮 875 117 2ms 22 days ago 71st edsrzf 🇳🇿 875 117 2ms 22 days ago 71st GolfingSuccess 🇬🇷 875 117 2ms 3 days ago 74th KasperKivimaeki 🇫🇮 874 139 432ms 19 Nov 2025 75th namelessiw 873 135 489ms 22 days ago 76th Lv0Sys 🇵🇱 872 96 14ms 23 days ago 77th anter69 🇭🇺 872 99 1,252ms 4 Feb 2026 77th pardouin 🇫🇷 872 99 1,303ms 15 Feb 2026 77th stefangimmillaro 872 99 1,320ms 21 Feb 2026 77th edsrzf 🇳🇿 872 99 1,238ms 24 days ago 1–80 of 371 Next Last