The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 32 hours. Why not try and solve them ahead of time?
Fibonacci in Perl 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 sisyphus-ppcg 🇦🇺 1,000 24 3ms 14 Mar 2021 1st Lydxn 🇨🇦 1,000 24 3ms 22 May 2022 1st fuzzylojik-golf 🇺🇸 1,000 24 3ms 22 Sep 2025 4th primo-ppcg 🇹🇭 960 25 2ms 24 Jun 2018 4th Steffan153 🇫🇮 960 25 3ms 14 Dec 2022 4th sean-niemann 🇺🇸 960 25 3ms 6 Jan 2026 7th thospel 923 26 3ms 26 Mar 2018 7th somebody1234 923 26 3ms 28 Mar 2018 7th nwellnhof 🇩🇪 923 26 3ms 18 Feb 2020 7th prplz 🇦🇺 923 26 2ms 22 Feb 2020 7th o0lit3 🇺🇸 923 26 2ms 19 Sep 2020 7th GrayJoKing 🇦🇺 923 26 2ms 9 Jan 2021 7th teebee 923 26 3ms 24 Feb 2021 7th lynn 923 26 3ms 26 Mar 2021 7th MeWhenI 🇻🇦 923 26 2ms 16 Apr 2023 7th pardouin 🇫🇷 923 26 3ms 22 Sep 2024 7th saito-ta 🇯🇵 923 26 2ms 4 Oct 2024 7th plcc0 923 26 3ms 31 Mar 2025 19th tynovsky 889 27 2ms 21 Aug 2018 19th JRaspass 🇬🇧 889 27 3ms 4 Jun 2020 19th marcin7Cd 889 27 3ms 12 Jan 2021 19th NewDefectus 🇮🇱 889 27 2ms 4 Jun 2021 19th perlebach 🇨🇿 889 27 2ms 12 Aug 2021 19th btnlq 889 27 3ms 27 Sep 2021 19th scpchicken 🇵🇼 889 27 2ms 2 Jan 2023 19th DialFrost 🇸🇬 889 27 3ms 15 Dec 2023 27th ytaki0801 🇯🇵 857 28 3ms 21 Jun 2021 27th ovs-code 🇩🇪 857 28 2ms 6 Jun 2022 27th Shanethegamer 🇺🇸 857 28 3ms 11 Jul 2022 27th Natanaelel 🇸🇪 857 28 3ms 30 Oct 2022 27th error256 857 28 3ms 10 May 2024 32nd kurkale6ka 828 29 3ms 12 Sep 2021 32nd duckyluuk 🇳🇱 828 29 3ms 16 Jul 2025 34th BBoehm 🇩🇪 800 30 2ms 23 Dec 2020 35th choroba 774 31 2ms 21 Oct 2017 36th janbehrens 🇩🇪 750 32 3ms 30 Mar 2021 37th gusruben 727 33 3ms 18 Sep 2025 38th labster 706 34 2ms 12 Mar 2018 38th SirBogman 🇺🇸 706 34 3ms 6 Jun 2020 40th 71c 686 35 3ms 7 Mar 2018 40th retrohun 686 35 2ms 14 Apr 2019 42nd justecorruptio 649 37 3ms 13 Apr 2018 42nd MatheusAvellar 🇧🇷 649 37 3ms 8 May 2021 42nd snoozingnewt 🇨🇦 649 37 3ms 23 Sep 2023 42nd neel11235813 649 37 3ms 26 Mar 2024 46th markobr 632 38 2ms 21 Oct 2017 46th heypwesto 🇳🇿 632 38 2ms 16 Apr 2021 46th kjetillll 🇮🇩 632 38 2ms 19 May 2021 49th BettaGeorge 615 39 3ms 22 Dec 2017 49th s-nez 615 39 3ms 19 Sep 2018 49th daedals 615 39 2ms 3 Jul 2019 49th KatieLG 🇬🇧 615 39 2ms 29 Nov 2020 49th AlephSquirrel 615 39 3ms 10 Dec 2022 54th erwoba 🇩🇪 600 40 2ms 11 Oct 2019 54th Andrey2001 600 40 2ms 25 Nov 2025 54th Matter1024 🇮🇳 600 40 3ms 2 hours ago 57th raphaelimahorn 585 41 2ms 3 Aug 2021 57th CaedenHarper 🇨🇦 585 41 3ms 26 Aug 2025 59th Athe81 571 42 2ms 30 Oct 2020 59th awnion 571 42 3ms 20 Oct 2022 61st datamuc 558 43 3ms 9 Jan 2020 61st Marin-Kitagawa 558 43 2ms 18 Jul 2021 61st speles 🇺🇦 558 43 2ms 12 Nov 2023 64th bobbogomip 545 44 3ms 19 Oct 2018 64th griffinschreiber 545 44 2ms 2 Nov 2024 64th iczelia 🇩🇪 545 44 3ms 21 Sep 2025 67th ashtraypettingzoo 🇺🇸 533 45 3ms 14 Feb 2023 67th epic-programmer-guy 533 45 3ms 20 Dec 2023 69th yzhs 🇩🇪 522 46 3ms 19 Jan 2020 69th edsrzf 🇳🇿 522 46 2ms 18 Sep 2024 69th desecaw13 522 46 2ms 24 Jan 2025 69th dokutan 522 46 3ms 26 Nov 2025 73rd theunofficialcoder 511 47 2ms 23 May 2021 73rd owen-c-parker 🇺🇸 511 47 3ms 24 Nov 2022 73rd jipsong 🇩🇪 511 47 3ms 13 Jun 2024 76th KrausRaus 🇺🇸 500 48 3ms 9 Mar 2020 76th AkashTandon167 500 48 3ms 9 Sep 2020 76th MichaelMBradley 🇨🇦 500 48 2ms 6 Apr 2022 79th LorenzoTa 490 49 3ms 20 Apr 2019 79th oceko 490 49 3ms 26 Nov 2022 1–80 of 123 Next Last
