The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 14 hours. Why not try and solve them ahead of time?
Leap Years in Raku 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 primo-ppcg 🇹🇭 1,000 23 148ms 11 Apr 2020 1st GrayJoKing 🇦🇺 1,000 23 143ms 18 Oct 2020 1st HPWiz 🇳🇿 1,000 23 146ms 17 Apr 2021 1st nwellnhof 🇩🇪 1,000 23 158ms 28 Sep 2021 1st Lydxn 🇨🇦 1,000 23 161ms 2 Mar 2023 6th sisyphus-ppcg 🇦🇺 958 24 146ms 21 Jun 2021 7th somebody1234 885 26 131ms 5 Dec 2018 7th AlexDaniel 🇪🇪 885 26 137ms 5 Apr 2020 9th retrohun 852 27 144ms 30 Apr 2019 10th prplz 🇦🇺 821 28 132ms 14 Mar 2020 10th SirBogman 🇺🇸 821 28 130ms 5 May 2020 12th Natanaelel 🇸🇪 793 29 118ms 27 Sep 2021 13th Attero 🇸🇪 767 30 140ms 9 Apr 2020 13th error256 767 30 131ms 13 May 2024 15th metakuna 742 31 120ms 17 Apr 2019 15th Will-Howard 742 31 137ms 19 Dec 2021 15th helbling 🇨🇭 742 31 138ms 19 Aug 2024 18th m-dango 719 32 137ms 7 May 2020 19th elisherer 🇮🇱 697 33 140ms 23 Apr 2019 20th Indivicivet 676 34 127ms 22 Mar 2021 20th sean-niemann 🇺🇸 676 34 246ms 10 Apr 2022 20th trist224 🇫🇷 676 34 133ms 14 Dec 2022 23rd Shanethegamer 🇺🇸 657 35 110ms 11 Sep 2021 23rd MeWhenI 🇻🇦 657 35 132ms 30 Jan 2023 23rd SirFireball3521 657 35 106ms 2 Mar 2023 23rd denkyuu1 657 35 146ms 23 Feb 2026 23rd fuzzylojik-golf 🇺🇸 657 35 111ms 3 days ago 28th ash 639 36 145ms 15 Dec 2018 28th janbehrens 🇩🇪 639 36 139ms 22 May 2021 28th NewDefectus 🇮🇱 639 36 113ms 27 May 2021 31st yokasuretsu 622 37 114ms 4 Dec 2018 31st JRaspass 🇬🇧 622 37 122ms 7 Oct 2020 31st scpchicken 🇵🇼 622 37 137ms 11 Mar 2022 34th yzhs 🇩🇪 605 38 130ms 7 Mar 2020 34th lynn 605 38 129ms 12 Apr 2021 34th voytxt 🇨🇿 605 38 128ms 13 Mar 2024 37th dokutan 590 39 125ms 14 Oct 2024 38th Phraeyll 575 40 120ms 30 Mar 2019 38th itiievskyi 🇺🇦 575 40 145ms 21 Aug 2020 40th heypwesto 🇳🇿 561 41 135ms 20 Apr 2021 40th DaCuteRaccoon 561 41 130ms 12 Dec 2022 40th roguh 🇬🇹 561 41 119ms 14 Jan 2024 43rd RustemB 🇷🇺 548 42 122ms 18 May 2020 44th jjatria 523 44 129ms 11 Jul 2020 45th Betuaredead 511 45 145ms 17 Jan 2023 46th Yewzir 🇧🇪 489 47 121ms 7 Feb 2024 47th annaproxy 469 49 131ms 14 Feb 2022 48th polyrtm 460 50 118ms 5 Mar 2019 49th alphafalfa 442 52 117ms 9 Dec 2024 50th dymowski 434 53 122ms 13 Jul 2019 51st mcreenan 426 54 132ms 6 Dec 2018 52nd snoozingnewt 🇨🇦 418 55 118ms 6 Oct 2023 53rd thisishowmymindworks 🇳🇴 397 58 120ms 22 Jul 2020 53rd p-vf 🇨🇭 397 58 133ms 28 Oct 2021 55th msbranicky 383 60 116ms 10 Sep 2023 56th massung 377 61 126ms 25 Mar 2019 56th juntuu 377 61 138ms 25 Mar 2019 58th KatieLG 🇬🇧 38 598 125ms 30 Nov 2025 59th KatieLG-Transpiler 🇬🇧 31 735 114ms 24 Jun 2022 59th HumanoidCPU 31 735 142ms 18 May 2024 59th Mabeloid 🇳🇴 31 735 111ms 22 Sep 2024 59th CaedenHarper 🇨🇦 31 735 114ms 16 Aug 2025 63rd lancew 🇳🇿 31 750 117ms 10 Jul 2020 64th mokymok 🇺🇸 26 880 136ms 10 Nov 2021 1–64 of 64
