The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 30 hours. Why not try and solve them ahead of time?
Fibonacci in JavaScript 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 381st Tavress 786 42 10ms 11 May 2023 381st charliegaming 786 42 12ms 3 Oct 2023 381st dommmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmy 786 42 10ms 15 May 2024 381st desecaw13 786 42 11ms 24 Jan 2025 381st ffelixm 786 42 10ms 11 Jun 2025 381st acollett89 786 42 9ms 15 Jul 2025 381st tknight-dev 786 42 9ms 25 Jul 2025 381st 52525rr 786 42 10ms 20 Oct 2025 381st matricronia 786 42 10ms 31 Jan 2026 381st Europe2048 786 42 10ms 19 days ago 411th GiftOfDeath 767 43 10ms 5 Feb 2018 411th ian-odonnell 767 43 10ms 12 Mar 2018 411th dangilkerson 767 43 11ms 28 Sep 2018 411th paudr 767 43 10ms 4 May 2019 411th dorinoltean 767 43 11ms 1 Oct 2019 411th xAlien95 767 43 9ms 15 Jul 2020 411th Non-J 767 43 9ms 26 Sep 2020 411th redstarrer 767 43 10ms 12 Jan 2021 411th Bejofo 767 43 9ms 17 Mar 2021 411th jhunterkohler 767 43 11ms 19 May 2021 411th shaunjc 767 43 10ms 2 Jul 2021 411th wansacis 🇩🇪 767 43 11ms 26 Jul 2021 411th vidmantasa 767 43 10ms 24 Sep 2021 411th rollershutter 767 43 9ms 26 Nov 2021 411th nguyenl2 767 43 9ms 23 May 2022 411th GeorgeStechman 🇬🇧 767 43 10ms 19 Jun 2022 411th Mortis66666 767 43 9ms 28 Jun 2022 411th eshilo-draper 767 43 11ms 5 Oct 2022 411th dukeaccent 🇫🇮 767 43 10ms 23 Nov 2022 411th amiralitaheri 767 43 11ms 14 Feb 2023 411th Inbarw100 767 43 10ms 10 Jun 2023 411th mqyhlkahu 767 43 9ms 9 Sep 2023 411th SanderRuud 767 43 10ms 3 Oct 2023 411th unfinishedprogram 767 43 10ms 12 Dec 2023 411th epic-programmer-guy 767 43 10ms 2 Jan 2024 411th itserasmus 767 43 9ms 26 Jan 2024 411th inverseLorentz 🇦🇺 767 43 9ms 21 Feb 2024 411th CarsonChr 🇺🇸 767 43 10ms 6 Apr 2024 411th draem 767 43 10ms 31 Jul 2024 411th hippopotam00sehead 🇨🇦 767 43 11ms 11 Sep 2024 411th jdcodes28 767 43 10ms 11 Sep 2024 411th dtbao20 🇻🇳 767 43 9ms 30 Sep 2024 411th sulphemi 767 43 9ms 3 Apr 2025 411th ToE42 767 43 10ms 16 May 2025 411th Protothor 767 43 10ms 9 Jul 2025 411th csharpython 767 43 12ms 23 Jul 2025 411th bpharaldsson 767 43 10ms 17 Feb 2026 448th owenoclee 750 44 9ms 7 Oct 2017 448th NegativePotato 750 44 8ms 20 Mar 2018 448th Sloff 750 44 11ms 15 May 2018 448th gschlect 750 44 9ms 22 Nov 2018 448th darryletc 750 44 11ms 4 Jan 2019 448th rowboat1 750 44 10ms 18 Feb 2019 448th oskarl 750 44 9ms 2 Aug 2019 448th ioioii 750 44 10ms 13 Dec 2019 448th lcba 750 44 10ms 14 Jan 2020 448th anissen 750 44 12ms 1 May 2020 448th generot 🇧🇬 750 44 11ms 2 Jul 2020 448th patterson-tom 750 44 9ms 26 Aug 2020 448th eecb 750 44 9ms 24 Nov 2020 448th Andre3582 750 44 11ms 25 Jan 2021 448th aguldstrand 750 44 10ms 18 Mar 2021 448th florton 750 44 9ms 6 Apr 2021 448th Ehrs 750 44 10ms 11 Apr 2021 448th willpiam 750 44 12ms 21 Sep 2021 448th c0d3-4-F00d 🇩🇪 750 44 9ms 19 Nov 2021 448th shreyasminocha 750 44 9ms 11 Dec 2021 448th AlexNeep 750 44 12ms 28 Mar 2022 448th DaCuteRaccoon 750 44 13ms 8 Apr 2022 448th JavaScriptizer101 750 44 10ms 19 May 2022 448th destofr 750 44 10ms 23 Aug 2022 448th ashtraypettingzoo 🇺🇸 750 44 11ms 16 Feb 2023 448th joakim-ronning 750 44 9ms 23 May 2023 448th biocommando 🇫🇮 750 44 10ms 22 Aug 2023 448th Maximizer02 750 44 10ms 4 Oct 2023 448th TheDarkThatBarks 750 44 12ms 31 Jan 2024 448th jbjd 750 44 10ms 24 Feb 2024 448th xyangst 750 44 10ms 8 Oct 2024 448th TheAtrossian 750 44 14ms 27 Mar 2025 448th codewrite 🇬🇧 750 44 10ms 18 Apr 2025 First Prev 401–480 of 871 Next Last
