The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 22 hours. Why not try and solve them ahead of time?
Leap Years in Raku 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 1st HPWiz 🇳🇿 1,000 28 149ms 4 Oct 2020 1st primo-ppcg 🇹🇭 1,000 28 126ms 5 Oct 2020 1st GrayJoKing 🇦🇺 1,000 28 146ms 18 Oct 2020 1st sisyphus-ppcg 🇦🇺 1,000 28 156ms 21 Jun 2021 1st Lydxn 🇨🇦 1,000 28 143ms 25 Sep 2021 1st nwellnhof 🇩🇪 1,000 28 159ms 28 Sep 2021 7th metakuna 848 33 120ms 17 Apr 2019 7th Will-Howard 848 33 137ms 19 Dec 2021 9th somebody1234 800 35 131ms 5 Dec 2018 9th prplz 🇦🇺 800 35 133ms 14 Oct 2020 9th sean-niemann 🇺🇸 800 35 202ms 31 Mar 2022 9th MeWhenI 🇻🇦 800 35 132ms 30 Jan 2023 9th fuzzylojik-golf 🇺🇸 800 35 111ms 3 days ago 14th retrohun 778 36 144ms 30 Apr 2019 14th Attero 🇸🇪 778 36 121ms 18 Oct 2020 14th janbehrens 🇩🇪 778 36 139ms 22 May 2021 14th Natanaelel 🇸🇪 778 36 104ms 27 Sep 2021 14th helbling 🇨🇭 778 36 136ms 19 Aug 2024 19th NewDefectus 🇮🇱 757 37 115ms 27 May 2021 19th SirBogman 🇺🇸 757 37 133ms 4 Nov 2021 19th scpchicken 🇵🇼 757 37 137ms 11 Mar 2022 19th SirFireball3521 757 37 106ms 2 Mar 2023 23rd JRaspass 🇬🇧 737 38 121ms 3 Dec 2018 23rd Indivicivet 737 38 155ms 22 Mar 2021 23rd lynn 737 38 129ms 12 Apr 2021 23rd error256 737 38 123ms 13 May 2024 23rd denkyuu1 737 38 159ms 23 Feb 2026 28th Shanethegamer 🇺🇸 718 39 116ms 22 May 2021 28th voytxt 🇨🇿 718 39 117ms 11 Mar 2024 30th yzhs 🇩🇪 700 40 130ms 7 Mar 2020 30th yokasuretsu 700 40 112ms 2 Jan 2025 32nd AlexDaniel 🇪🇪 683 41 137ms 5 Apr 2020 32nd heypwesto 🇳🇿 683 41 135ms 20 Apr 2021 32nd DaCuteRaccoon 683 41 130ms 12 Dec 2022 32nd trist224 🇫🇷 683 41 124ms 14 Dec 2022 32nd roguh 🇬🇹 683 41 119ms 14 Jan 2024 37th ash 667 42 145ms 15 Dec 2018 38th itiievskyi 🇺🇦 636 44 145ms 21 Aug 2020 38th dokutan 636 44 126ms 14 Oct 2024 40th elisherer 🇮🇱 622 45 140ms 23 Apr 2019 40th m-dango 622 45 137ms 7 May 2020 40th Betuaredead 622 45 145ms 17 Jan 2023 43rd jjatria 609 46 129ms 11 Jul 2020 44th Yewzir 🇧🇪 596 47 121ms 7 Feb 2024 45th RustemB 🇷🇺 583 48 122ms 18 May 2020 46th annaproxy 571 49 131ms 14 Feb 2022 47th polyrtm 549 51 118ms 5 Mar 2019 48th alphafalfa 538 52 117ms 9 Dec 2024 49th dymowski 528 53 122ms 13 Jul 2019 50th Phraeyll 509 55 120ms 30 Mar 2019 50th snoozingnewt 🇨🇦 509 55 118ms 6 Oct 2023 52nd thisishowmymindworks 🇳🇴 483 58 120ms 22 Jul 2020 52nd p-vf 🇨🇭 483 58 133ms 28 Oct 2021 54th msbranicky 467 60 116ms 10 Sep 2023 55th massung 459 61 126ms 25 Mar 2019 55th juntuu 459 61 138ms 25 Mar 2019 57th mcreenan 418 67 132ms 6 Dec 2018 58th KatieLG 🇬🇧 47 598 125ms 30 Nov 2025 59th KatieLG-Transpiler 🇬🇧 38 735 114ms 24 Jun 2022 59th HumanoidCPU 38 735 142ms 18 May 2024 59th Mabeloid 🇳🇴 38 735 111ms 22 Sep 2024 59th CaedenHarper 🇨🇦 38 735 114ms 16 Aug 2025 63rd lancew 🇳🇿 37 750 117ms 10 Jul 2020 64th mokymok 🇺🇸 32 880 136ms 10 Nov 2021 1–64 of 64
