The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 4 days. Why not try and solve them ahead of time?
Odious 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 lynn 970 19 32ms 19 Mar 2021 150th o0lit3 🇺🇸 970 19 33ms 23 Mar 2021 150th Lydxn 🇨🇦 970 19 34ms 20 Jul 2021 150th kurkale6ka 970 19 33ms 25 Aug 2021 150th rak1507 🇬🇧 970 19 33ms 13 Sep 2021 150th Bubbler-4 970 19 33ms 17 Nov 2021 150th NewDefectus 🇮🇱 970 19 33ms 5 Dec 2021 150th ovs-code 🇩🇪 970 19 32ms 3 Feb 2022 150th 4hg 🇺🇸 970 19 32ms 11 Jul 2022 150th saltysylvi 970 19 33ms 11 Oct 2022 150th scpchicken 🇵🇼 970 19 33ms 1 Jan 2023 150th Steffan153 🇫🇮 970 19 33ms 11 Jan 2023 150th DialFrost 🇸🇬 970 19 32ms 25 Jan 2023 150th sean-niemann 🇺🇸 970 19 32ms 26 Jan 2023 150th ashtraypettingzoo 🇺🇸 970 19 33ms 24 Feb 2023 150th jipsong 🇩🇪 970 19 32ms 22 Aug 2024 150th pardouin 🇫🇷 970 19 33ms 24 Sep 2024 150th Natanaelel 🇸🇪 970 19 33ms 8 Nov 2024 150th JayXon 🇺🇸 970 19 33ms 8 Mar 2025 150th fuzzylojik-golf 🇺🇸 970 19 32ms 21 Aug 2025 150th 2bular 970 19 33ms 25 Aug 2025 150th snoozingnewt 🇨🇦 970 19 33ms 3 Dec 2025 183rd lukegustafson 🇺🇸 970 37 10ms 4 Aug 2024 183rd rucin93 🇵🇱 970 37 10ms 13 Oct 2024 183rd sean-niemann 🇺🇸 970 37 10ms 27 Dec 2024 186th nwellnhof 🇩🇪 966 21 103ms 6 Dec 2021 186th Lydxn 🇨🇦 966 21 101ms 1 May 2022 186th GrayJoKing 🇦🇺 966 21 108ms 16 Dec 2022 189th primo-ppcg 🇹🇭 966 26 34ms 3 Jan 2020 189th sisyphus-ppcg 🇦🇺 966 26 36ms 10 Feb 2021 189th JayXon 🇺🇸 966 26 35ms 20 Feb 2021 189th Lydxn 🇨🇦 966 26 36ms 17 Aug 2021 189th nwellnhof 🇩🇪 966 26 39ms 30 Dec 2021 189th stefangimmillaro 966 26 34ms 3 Aug 2023 189th MeWhenI 🇻🇦 966 26 36ms 3 Aug 2023 189th radarek 🇵🇱 966 26 33ms 16 Dec 2024 189th pardouin 🇫🇷 966 26 35ms 11 Apr 2025 189th Steffan153 🇫🇮 966 26 37ms 20 days ago 199th Lydxn 🇨🇦 963 24 230ms 5 Jan 2024 200th alangodfrey 956 41 10ms 12 Jun 2019 200th yzhs 🇩🇪 956 41 9ms 8 Sep 2020 200th Waffle3z 956 41 10ms 25 Oct 2020 200th argusdusty 🇺🇸 956 41 9ms 26 Dec 2020 200th stordev 956 41 10ms 26 Feb 2021 200th jascotm 956 41 9ms 8 Apr 2021 200th Romain-1 🇫🇷 956 41 10ms 3 May 2022 200th SniperSmiley 🇺🇸 956 41 10ms 28 Jul 2022 200th andersk 🇺🇸 956 41 11ms 25 Oct 2022 200th nstearns96 🇬🇧 956 41 9ms 21 Dec 2022 200th scpchicken 🇵🇼 956 41 10ms 2 Jan 2023 200th fkantelberg 956 41 10ms 22 Jul 2023 200th MWI-polygolf 956 41 9ms 6 Dec 2023 200th thatbirdguythatuknownot 956 41 11ms 24 Jan 2024 200th Just4FunCoder 956 41 10ms 17 Feb 2024 200th f-tucker 956 41 10ms 20 Feb 2024 200th sultan 956 41 11ms 3 Mar 2024 200th markusgraube 956 41 10ms 8 Mar 2024 200th HumanoidCPU 956 41 9ms 4 May 2024 200th hiichbindermax 956 41 10ms 17 Sep 2024 200th klixel 🇨🇦 956 41 10ms 18 Jan 2025 200th qpwoeirut 956 41 9ms 13 Aug 2025 200th albanian-laundromat 956 41 9ms 4 Oct 2025 200th firegene 🇮🇪 956 41 10ms 11 Feb 2026 224th rhdqor213 956 49 2ms 10 Dec 2025 224th Lydxn 🇨🇦 956 49 2ms 11 Dec 2025 226th primo-ppcg 🇹🇭 953 26 3ms 21 Nov 2019 226th Lydxn 🇨🇦 953 26 3ms 17 Jun 2023 228th Lydxn 🇨🇦 950 37 4ms 13 May 2024 229th primo-ppcg 🇹🇭 949 28 213ms 23 Aug 2019 229th HPWiz 🇳🇿 949 28 209ms 23 Aug 2019 229th JayXon 🇺🇸 949 28 218ms 16 Feb 2021 229th Lydxn 🇨🇦 949 28 232ms 29 Sep 2022 229th Steffan153 🇫🇮 949 28 221ms 25 Apr 2023 229th sean-niemann 🇺🇸 949 28 229ms 27 Dec 2024 235th primo-ppcg 🇹🇭 944 38 10ms 21 Nov 2019 235th Argeento 🇵🇱 944 38 24ms 7 Oct 2020 235th JayXon 🇺🇸 944 38 10ms 17 Feb 2021 235th Lydxn 🇨🇦 944 38 10ms 25 Mar 2021 235th Steffan153 🇫🇮 944 38 9ms 6 Mar 2023 235th orthoplex 🇨🇽 944 38 9ms 4 Oct 2023 First Prev 161–240 of 4,138 Next Last
