The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 12 hours. Why not try and solve them ahead of time?
φ 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 799th jfallon1997 693 73 25ms 3 Jan 2023 799th RandGuy 693 73 23ms 25 Jan 2024 803rd albanian-laundromat 693 173 56ms 8 Sep 2025 804th vang1ong7ang 693 206 151ms 6 hours ago 805th dokutan 692 50 1,949ms 31 Dec 2023 805th msbranicky 692 50 165ms 12 Jan 2024 807th emgordon154 692 69 7ms 10 Dec 2024 808th trinityy-7 689 39 8ms 16 Feb 2024 809th JunkIce 687 67 400ms 3 Dec 2024 810th fisxoj 687 72 22ms 28 Apr 2018 811th albanian-laundromat 687 172 1,410ms 18 Oct 2025 812th Irratix 🇳🇱 686 49 82ms 1 Jul 2022 813th janbehrens 🇩🇪 686 130 502ms 21 Nov 2021 814th lynn 685 236 226ms 4 Aug 2023 815th yzhs 🇩🇪 684 33 33ms 7 Sep 2020 816th mueller14003 683 74 12ms 7 Apr 2018 816th ly0va 683 74 13ms 3 Jan 2019 816th skps2010 683 74 12ms 12 Jan 2019 816th markus-rekdal 683 74 24ms 31 May 2019 816th hoodadam 683 74 14ms 19 Jul 2019 816th dzhang314 683 74 13ms 14 Aug 2019 816th marcin7Cd 683 74 11ms 4 Sep 2019 816th sk- 683 74 12ms 11 Sep 2019 816th Haksell 🇦🇶 683 74 12ms 1 Dec 2019 816th Jviscus1 683 74 12ms 24 Apr 2020 816th itiievskyi 🇺🇦 683 74 13ms 6 Aug 2020 816th Maltysen 683 74 11ms 26 Sep 2020 816th ydevor 🇮🇱 683 74 12ms 22 Feb 2021 816th stordev 683 74 12ms 26 Feb 2021 816th Indivicivet 683 74 13ms 18 Mar 2021 816th neihousaigaai 683 74 12ms 28 Mar 2021 816th ehulinsky 🇺🇸 683 74 13ms 10 Nov 2021 816th sleepyStick 683 74 12ms 7 Dec 2021 816th Bonjour27891 🇻🇳 683 74 13ms 10 Feb 2022 816th PeterDekkers 683 74 25ms 7 Aug 2022 816th Bananapants22 683 74 12ms 16 Aug 2022 816th suwat513 683 74 12ms 23 Sep 2022 816th Omega65536 🇩🇪 683 74 12ms 23 Nov 2022 816th neel11235813 683 74 12ms 11 Jan 2023 816th grave367 683 74 24ms 5 Mar 2023 816th janbehrens 🇩🇪 683 74 13ms 17 Jun 2023 816th msbranicky 683 74 13ms 10 Jul 2023 816th Stockoh 🇫🇷 683 74 13ms 5 Nov 2023 816th smokestacklightnin 🇺🇸 683 74 12ms 29 Dec 2023 816th sultan 683 74 12ms 9 Mar 2024 816th christensendaniel 683 74 13ms 13 May 2024 816th codingisgreatbutiamnot 683 74 12ms 14 Jul 2024 816th xyangst 683 74 13ms 12 Oct 2024 816th gigaprofisi 🇺🇸 683 74 12ms 2 Mar 2025 816th Pyroan 683 74 12ms 18 Mar 2025 816th BenjaminHGong 683 74 13ms 23 May 2025 816th codewrite 🇬🇧 683 74 12ms 25 May 2025 816th JOrE-Softwares 683 74 13ms 31 May 2025 816th sainiayush 683 74 13ms 14 Jul 2025 816th Emutis 🇱🇹 683 74 12ms 6 Oct 2025 816th luuumine 🇫🇷 683 74 12ms 8 Oct 2025 816th TJK-S 683 74 12ms 28 Oct 2025 816th LostSyntax21 🇬🇧 683 74 12ms 9 Nov 2025 816th Andrey2001 683 74 13ms 15 Dec 2025 816th celiendonze 🇨🇭 683 74 12ms 6 Jan 2026 816th Aquateraneal 🇺🇸 683 74 12ms 19 Feb 2026 862nd MeWhenI 🇻🇦 682 237 65ms 6 Jun 2023 863rd CatsAreFluffy 679 28 40ms 6 Jan 2024 864th Emutis 🇱🇹 679 51 178ms 14 Oct 2025 865th CatsAreFluffy 677 68 478ms 15 Jan 2024 866th emgordon154 677 213 4,441ms 22 Oct 2024 867th m-tkach 🇺🇦 677 262 25ms 20 Jun 2022 868th emgordon154 676 124 115ms 30 Nov 2025 869th msrawson 674 75 12ms 30 Aug 2018 869th jmhowl 674 75 12ms 24 Mar 2020 869th Secozzi 674 75 12ms 20 Oct 2020 869th StHagel 674 75 13ms 7 May 2021 869th cubed-guy 674 75 50ms 18 Oct 2021 869th pecholsjones 674 75 12ms 12 Dec 2021 869th BerkeAltiparmak 674 75 12ms 23 May 2022 869th asadullayev 674 75 12ms 8 Jul 2022 869th kenny14231 674 75 13ms 5 Aug 2022 869th DrPiranoid 674 75 13ms 26 Mar 2023 869th Mikey-Beep 🇬🇧 674 75 23ms 24 Aug 2023 869th rollershutter 674 75 13ms 27 May 2024 First Prev 801–880 of 2,496 Next Last
