The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 2 days. Why not try and solve them ahead of time?
Pernicious Numbers in all languages 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 160th JayXon 🇺🇸 968 34 9ms 9 Feb 2021 160th primo-ppcg 🇹🇭 968 34 10ms 9 Feb 2021 160th prplz 🇦🇺 968 34 9ms 10 Feb 2021 160th sisyphus-ppcg 🇦🇺 968 34 9ms 10 Feb 2021 160th Lydxn 🇨🇦 968 34 11ms 10 Feb 2021 160th Waffle3z 968 34 12ms 10 Feb 2021 160th o0lit3 🇺🇸 968 34 10ms 11 Feb 2021 160th NewDefectus 🇮🇱 968 34 10ms 8 May 2021 160th orthoplex 🇨🇽 968 34 9ms 12 Aug 2021 160th lynn 968 34 10ms 11 Sep 2021 160th akshatj27 🇦🇶 968 34 12ms 12 Nov 2021 160th Irratix 🇳🇱 968 34 9ms 22 Mar 2022 160th dmrichwa 🇺🇸 968 34 9ms 20 May 2022 160th inventshah 968 34 10ms 15 Jun 2022 160th AlephSquirrel 968 34 9ms 18 Jul 2022 160th sean-niemann 🇺🇸 968 34 9ms 4 Nov 2022 160th stefangimmillaro 968 34 12ms 4 Nov 2022 160th MeWhenI 🇻🇦 968 34 9ms 5 Nov 2022 160th emplv 🇱🇻 968 34 9ms 22 Nov 2022 160th Steffan153 🇫🇮 968 34 10ms 26 Nov 2022 160th DialFrost 🇸🇬 968 34 10ms 12 Jan 2023 160th rucin93 🇵🇱 968 34 10ms 14 Jan 2023 160th Argeento 🇵🇱 968 34 14ms 19 Jan 2023 160th Shanethegamer 🇺🇸 968 34 9ms 6 Feb 2023 160th xsot 🇸🇬 968 34 12ms 14 Jul 2023 160th ovs-code 🇩🇪 968 34 12ms 17 Jul 2023 160th Yewzir 🇧🇪 968 34 11ms 11 Oct 2023 160th Betuaredead 968 34 9ms 11 Nov 2023 160th lukegustafson 🇺🇸 968 34 10ms 3 Mar 2024 160th vlpx 🇫🇮 968 34 11ms 18 Jun 2024 160th pardouin 🇫🇷 968 34 10ms 17 Aug 2024 160th b-illy 🇬🇧 968 34 12ms 29 Sep 2024 160th voytxt 🇨🇿 968 34 13ms 19 Jan 2025 160th fuzzylojik-golf 🇺🇸 968 34 10ms 1 Jul 2025 160th CaedenHarper 🇨🇦 968 34 10ms 2 Sep 2025 160th snoozingnewt 🇨🇦 968 34 10ms 20 Oct 2025 160th emgordon154 968 34 11ms 8 Feb 2026 160th GolfingSuccess 🇬🇷 968 34 10ms 16 days ago 199th GrayJoKing 🇦🇺 967 24 105ms 9 May 2021 199th sisyphus-ppcg 🇦🇺 967 24 103ms 9 May 2021 199th prplz 🇦🇺 967 24 104ms 9 May 2021 199th primo-ppcg 🇹🇭 967 24 113ms 10 May 2021 199th Lydxn 🇨🇦 967 24 103ms 25 Sep 2021 199th lynn 967 24 108ms 3 Jun 2022 199th JayXon 🇺🇸 967 24 112ms 8 Sep 2022 199th Steffan153 🇫🇮 967 24 101ms 26 Nov 2022 199th DialFrost 🇸🇬 967 24 100ms 13 Jan 2023 199th sean-niemann 🇺🇸 967 24 93ms 29 Jan 2023 199th SirFireball3521 967 24 97ms 13 Mar 2023 199th Yewzir 🇧🇪 967 24 104ms 12 Oct 2023 199th Betuaredead 967 24 118ms 12 Nov 2023 199th ovs-code 🇩🇪 967 24 106ms 2 Jan 2024 199th pardouin 🇫🇷 967 24 106ms 19 Aug 2024 199th fuzzylojik-golf 🇺🇸 967 24 103ms 6 Jul 2025 199th snoozingnewt 🇨🇦 967 24 97ms 3 Dec 2025 216th primo-ppcg 🇹🇭 966 29 35ms 9 Feb 2021 216th prplz 🇦🇺 966 29 34ms 10 Feb 2021 216th NewDefectus 🇮🇱 966 29 38ms 8 May 2021 216th akshatj27 🇦🇶 966 29 36ms 11 Jan 2022 216th stefangimmillaro 966 29 32ms 4 Nov 2022 216th m-tkach 🇺🇦 966 29 37ms 23 Nov 2022 216th Steffan153 🇫🇮 966 29 39ms 1 Jan 2023 216th DialFrost 🇸🇬 966 29 36ms 13 Jan 2023 216th sean-niemann 🇺🇸 966 29 37ms 29 Jan 2023 216th MeWhenI 🇻🇦 966 29 37ms 30 Jan 2023 216th JayXon 🇺🇸 966 29 35ms 25 Dec 2023 216th sisyphus-ppcg 🇦🇺 966 29 39ms 25 Dec 2023 216th Yewzir 🇧🇪 966 29 32ms 25 Dec 2023 216th GrayJoKing 🇦🇺 966 29 34ms 26 Dec 2023 216th Lydxn 🇨🇦 966 29 38ms 29 Dec 2023 216th xsot 🇸🇬 966 29 32ms 30 Dec 2023 216th radarek 🇵🇱 966 29 40ms 7 Jul 2024 216th pardouin 🇫🇷 966 29 37ms 29 Mar 2025 216th fuzzylojik-golf 🇺🇸 966 29 38ms 30 Aug 2025 216th snoozingnewt 🇨🇦 966 29 36ms 3 Dec 2025 216th GolfingSuccess 🇬🇷 966 29 32ms 16 days ago 237th GrayJoKing 🇦🇺 965 24 3ms 9 Feb 2021 237th JayXon 🇺🇸 965 24 3ms 9 Feb 2021 237th primo-ppcg 🇹🇭 965 24 3ms 9 Feb 2021 237th prplz 🇦🇺 965 24 3ms 10 Feb 2021 First Prev 161–240 of 3,463 Next Last
