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 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 150th stefangimmillaro 972 22 259ms 4 Nov 2022 150th MeWhenI 🇻🇦 972 22 233ms 5 Nov 2022 150th Steffan153 🇫🇮 972 22 256ms 1 Jan 2023 150th DialFrost 🇸🇬 972 22 262ms 12 Jan 2023 150th sean-niemann 🇺🇸 972 22 252ms 22 Jan 2023 150th Shanethegamer 🇺🇸 972 22 246ms 6 Feb 2023 150th ovs-code 🇩🇪 972 22 242ms 17 Jul 2023 150th Yewzir 🇧🇪 972 22 234ms 19 Nov 2023 150th bitsandbeyond 🇳🇱 972 22 331ms 8 Jun 2024 150th pardouin 🇫🇷 972 22 256ms 19 Aug 2024 150th fuzzylojik-golf 🇺🇸 972 22 265ms 27 Aug 2025 150th snoozingnewt 🇨🇦 972 22 253ms 20 Oct 2025 150th GolfingSuccess 🇬🇷 972 22 242ms 16 days ago 174th GrayJoKing 🇦🇺 968 34 16ms 9 Feb 2021 174th JayXon 🇺🇸 968 34 9ms 9 Feb 2021 174th primo-ppcg 🇹🇭 968 34 10ms 9 Feb 2021 174th prplz 🇦🇺 968 34 9ms 10 Feb 2021 174th sisyphus-ppcg 🇦🇺 968 34 9ms 10 Feb 2021 174th Lydxn 🇨🇦 968 34 11ms 10 Feb 2021 174th Waffle3z 968 34 12ms 10 Feb 2021 174th o0lit3 🇺🇸 968 34 10ms 11 Feb 2021 174th NewDefectus 🇮🇱 968 34 10ms 8 May 2021 174th orthoplex 🇨🇽 968 34 9ms 12 Aug 2021 174th lynn 968 34 10ms 11 Sep 2021 174th akshatj27 🇦🇶 968 34 12ms 12 Nov 2021 174th Irratix 🇳🇱 968 34 9ms 22 Mar 2022 174th dmrichwa 🇺🇸 968 34 9ms 20 May 2022 174th inventshah 968 34 10ms 15 Jun 2022 174th AlephSquirrel 968 34 9ms 18 Jul 2022 174th sean-niemann 🇺🇸 968 34 9ms 4 Nov 2022 174th stefangimmillaro 968 34 12ms 4 Nov 2022 174th MeWhenI 🇻🇦 968 34 9ms 5 Nov 2022 174th emplv 🇱🇻 968 34 9ms 22 Nov 2022 174th Steffan153 🇫🇮 968 34 10ms 26 Nov 2022 174th DialFrost 🇸🇬 968 34 10ms 12 Jan 2023 174th rucin93 🇵🇱 968 34 10ms 14 Jan 2023 174th Argeento 🇵🇱 968 34 14ms 19 Jan 2023 174th Shanethegamer 🇺🇸 968 34 9ms 6 Feb 2023 174th xsot 🇸🇬 968 34 12ms 14 Jul 2023 174th ovs-code 🇩🇪 968 34 12ms 17 Jul 2023 174th Yewzir 🇧🇪 968 34 11ms 11 Oct 2023 174th Betuaredead 968 34 9ms 11 Nov 2023 174th lukegustafson 🇺🇸 968 34 10ms 3 Mar 2024 174th vlpx 🇫🇮 968 34 11ms 18 Jun 2024 174th pardouin 🇫🇷 968 34 10ms 17 Aug 2024 174th b-illy 🇬🇧 968 34 12ms 29 Sep 2024 174th voytxt 🇨🇿 968 34 13ms 19 Jan 2025 174th fuzzylojik-golf 🇺🇸 968 34 10ms 1 Jul 2025 174th CaedenHarper 🇨🇦 968 34 10ms 2 Sep 2025 174th snoozingnewt 🇨🇦 968 34 10ms 20 Oct 2025 174th emgordon154 968 34 11ms 8 Feb 2026 174th GolfingSuccess 🇬🇷 968 34 10ms 16 days ago 213th prplz 🇦🇺 967 28 35ms 3 Jan 2020 213th primo-ppcg 🇹🇭 967 28 35ms 3 Jan 2020 213th stefangimmillaro 967 28 34ms 11 Dec 2024 213th radarek 🇵🇱 967 28 35ms 17 Dec 2024 213th pardouin 🇫🇷 967 28 37ms 12 Apr 2025 213th Steffan153 🇫🇮 967 28 41ms 22 days ago 219th GrayJoKing 🇦🇺 965 24 3ms 9 Feb 2021 219th JayXon 🇺🇸 965 24 3ms 9 Feb 2021 219th primo-ppcg 🇹🇭 965 24 3ms 9 Feb 2021 219th prplz 🇦🇺 965 24 3ms 10 Feb 2021 219th sisyphus-ppcg 🇦🇺 965 24 3ms 10 Feb 2021 219th o0lit3 🇺🇸 965 24 3ms 11 Feb 2021 219th NewDefectus 🇮🇱 965 24 2ms 8 May 2021 219th Lydxn 🇨🇦 965 24 3ms 5 Jun 2021 219th lynn 965 24 3ms 11 Sep 2021 219th HPWiz 🇳🇿 965 24 3ms 13 Oct 2021 219th akshatj27 🇦🇶 965 24 3ms 11 Jan 2022 219th saito-ta 🇯🇵 965 24 3ms 29 Sep 2022 219th Steffan153 🇫🇮 965 24 3ms 26 Nov 2022 219th AlephSquirrel 965 24 3ms 10 Dec 2022 219th DialFrost 🇸🇬 965 24 3ms 12 Jan 2023 219th sean-niemann 🇺🇸 965 24 3ms 28 Jan 2023 219th Shanethegamer 🇺🇸 965 24 4ms 6 Feb 2023 219th MeWhenI 🇻🇦 965 24 2ms 16 Apr 2023 219th ovs-code 🇩🇪 965 24 3ms 17 Jul 2023 219th Betuaredead 965 24 2ms 12 Nov 2023 219th Yewzir 🇧🇪 965 24 3ms 14 Nov 2023 219th pardouin 🇫🇷 965 24 3ms 19 Aug 2024 First Prev 161–240 of 3,435 Next Last
