The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 38 hours. Why not try and solve them ahead of time?
Arabic to Roman in JavaScript 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 sean-niemann 🇺🇸 1,000 90 28ms 18 Jan 2025 1st rucin93 🇵🇱 1,000 90 33ms 19 Jan 2025 1st Steffan153 🇫🇮 1,000 90 27ms 2 days ago 4th primo-ppcg 🇹🇭 989 91 36ms 28 Nov 2020 5th Argeento 🇵🇱 947 95 39ms 8 Oct 2020 6th JayXon 🇺🇸 938 96 16ms 18 Jan 2025 7th emplv 🇱🇻 918 98 26ms 19 Jan 2025 8th taklam 882 102 17ms 4 Jul 2020 8th Irratix 🇳🇱 882 102 16ms 30 Aug 2020 8th tomtheisen 🇺🇸 882 102 216ms 2 Oct 2020 8th cywong-amino 🇭🇰 882 102 17ms 7 Oct 2020 8th BBoehm 🇩🇪 882 102 16ms 12 Feb 2021 8th nwellnhof 🇩🇪 882 102 24ms 3 Oct 2022 14th prplz 🇦🇺 874 103 15ms 17 Mar 2020 14th Lydxn 🇨🇦 874 103 17ms 18 Jul 2025 16th lukegustafson 🇺🇸 865 104 21ms 27 Jun 2024 17th thisishowmymindworks 🇳🇴 849 106 24ms 31 Aug 2020 17th MeWhenI 🇻🇦 849 106 20ms 14 Jul 2021 17th akshatj27 🇦🇶 849 106 26ms 11 Jan 2022 17th DialFrost 🇸🇬 849 106 27ms 26 Sep 2023 17th nsprd 849 106 19ms 18 Jan 2024 17th XenThe 🇬🇧 849 106 20ms 1 Jul 2025 23rd solmyr2000 841 107 16ms 10 Jun 2022 24th frobinsonj 833 108 27ms 6 Dec 2019 24th rambox11 833 108 22ms 6 Dec 2019 24th voytxt 🇨🇿 833 108 19ms 20 Jul 2025 27th PatrickStephansen 🇿🇦 826 109 26ms 16 Oct 2020 28th niklv 🇷🇺 818 110 19ms 21 Dec 2023 29th Sam-Vrgl 811 111 13ms 13 May 2025 30th KatieLG 🇬🇧 804 112 18ms 5 Oct 2025 31st emgordon154 796 113 20ms 1 Aug 2024 32nd ETHproductions 🇺🇸 789 114 16ms 23 May 2018 32nd vlpx 🇫🇮 789 114 24ms 23 Sep 2024 34th KrausRaus 🇺🇸 776 116 31ms 2 Sep 2020 35th xyangst 769 117 15ms 28 Sep 2024 35th ArmaanAS 769 117 25ms 18 Feb 2025 37th elisherer 🇮🇱 763 118 14ms 8 Apr 2019 37th tayloia 🇬🇧 763 118 33ms 15 May 2023 37th ovs-code 🇩🇪 763 118 14ms 18 Nov 2024 40th blaztoma 🇱🇹 756 119 14ms 4 Oct 2025 41st Shanethegamer 🇺🇸 738 122 20ms 1 Dec 2022 42nd justecorruptio 726 124 24ms 14 Apr 2018 43rd p01 720 125 19ms 26 Jan 2018 43rd tpiechaczek 🇵🇱 720 125 19ms 29 Jan 2020 43rd olivermrose 🇺🇸 720 125 20ms 27 Aug 2021 43rd dmrichwa 🇺🇸 720 125 22ms 16 Apr 2022 43rd two-bad 🇬🇧 720 125 23ms 23 Nov 2023 43rd dylanarmstrong 720 125 19ms 10 Dec 2023 43rd kkoenig 720 125 21ms 23 Dec 2023 43rd helbling 🇨🇭 720 125 28ms 21 Mar 2024 43rd duckyluuk 🇳🇱 720 125 20ms 3 Oct 2024 43rd acollett89 720 125 20ms 4 Aug 2025 43rd iczelia 🇩🇪 720 125 20ms 10 Oct 2025 54th vang1ong7ang 714 126 19ms 29 Oct 2021 55th efgen 709 127 17ms 26 Dec 2023 56th targrik 698 129 58ms 4 Sep 2025 57th dokutan 682 132 15ms 1 Feb 2026 58th AlephSquirrel 677 133 24ms 15 Feb 2023 58th jbt 677 133 24ms 25 Dec 2023 60th janbehrens 🇩🇪 672 134 22ms 12 Nov 2023 61st itsh01 662 136 18ms 9 Aug 2021 62nd stefangimmillaro 657 137 17ms 12 Sep 2024 63rd Lv0Sys 🇵🇱 643 140 14ms 27 Nov 2025 64th jared-hughes 638 141 25ms 10 Sep 2021 64th Andrey-Plotnikov 638 141 13ms 25 Oct 2024 66th uttumuttu 🇫🇮 634 142 26ms 4 Jan 2022 66th iliazeus 634 142 19ms 3 Sep 2022 66th LukeBridges 🇬🇧 634 142 23ms 28 Oct 2022 66th madeforlosers 634 142 20ms 2 Nov 2023 70th mamamia5x 629 143 14ms 8 Mar 2024 71st FireyFly 625 144 20ms 14 Apr 2018 71st skps2010 625 144 14ms 1 Jan 2019 71st didion0 🇺🇸 625 144 15ms 22 Apr 2021 71st NewDefectus 🇮🇱 625 144 16ms 8 Oct 2021 71st raphaelimahorn 625 144 17ms 26 Oct 2022 76th legrottagliegionata 616 146 22ms 7 Dec 2021 77th trinityy-7 612 147 19ms 26 Jan 2026 78th daniel-pedersen 🇸🇪 608 148 18ms 6 Mar 2022 78th stop-amertime 608 148 16ms 5 Dec 2022 80th daisy-lau 604 149 15ms 13 Jul 2020 1–80 of 194 Next Last
