The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 27 hours. Why not try and solve them ahead of time?
Fibonacci in JavaScript 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 795th logalex8369 🇺🇸 458 72 26ms 18 Dec 2025 802nd plibither8 446 74 9ms 27 Apr 2020 802nd TheZwierzLF 🇵🇱 446 74 26ms 9 Jan 2026 804th robertfairley 440 75 31ms 21 Feb 2018 804th dillon-duncando 440 75 26ms 21 Dec 2021 804th Hyperoplex145 440 75 12ms 2 Jan 2026 807th sethimcclaine 434 76 11ms 5 Apr 2019 807th James-revans 434 76 10ms 31 Dec 2019 807th thacuber2a03 🇩🇴 434 76 10ms 24 Jul 2024 810th tfk333 429 77 11ms 23 Feb 2018 811th skinnersp 423 78 27ms 13 Jul 2020 811th PoseidonCoder 423 78 9ms 25 Aug 2020 811th Meatballman 423 78 9ms 1 Aug 2022 811th MyXoToD 🇩🇪 423 78 9ms 7 May 2025 815th marissa999 418 79 10ms 9 Jan 2018 815th StronkCheese 🇺🇸 418 79 12ms 13 Mar 2023 817th Starwort 🇬🇧 413 80 12ms 15 Dec 2018 817th marea 413 80 9ms 18 Jun 2020 819th dcure73 407 81 9ms 7 Jun 2019 819th tickct 407 81 26ms 13 Sep 2019 819th shawphy 407 81 10ms 15 Oct 2021 819th PowershellKnut 🇳🇴 407 81 9ms 7 Jan 2024 823rd jakethakur 402 82 10ms 30 Mar 2018 823rd steedwards241 402 82 11ms 12 Nov 2020 823rd brodie-m 402 82 10ms 24 Nov 2022 823rd rushi0326 402 82 10ms 26 Dec 2023 827th pashabou 398 83 9ms 5 Apr 2018 827th WilleyOhana 398 83 25ms 26 Feb 2021 827th rossmacfarlane 398 83 9ms 9 Nov 2022 830th MarlonClark 393 84 11ms 30 Dec 2019 830th ThePyProgrammer 393 84 10ms 14 Dec 2021 830th ahorihan 393 84 12ms 3 Aug 2022 833rd syedad218 384 86 12ms 12 Jul 2023 834th MatthewDietrich 379 87 29ms 6 Jun 2018 835th dkdub 371 89 10ms 2 Jun 2018 835th dbkirk4211 371 89 10ms 3 May 2024 837th aloehan 367 90 10ms 18 Dec 2017 837th Designer023 367 90 10ms 7 Feb 2020 837th feherd 367 90 10ms 15 Nov 2023 840th hacker19374 363 91 10ms 8 Mar 2023 840th JackieAlacrity2373 363 91 11ms 14 May 2024 842nd nickforddev 359 92 9ms 28 Nov 2023 843rd Alice-Cheshire 355 93 12ms 26 Feb 2018 844th pablaber 347 95 27ms 28 Sep 2017 845th kelvinauta 340 97 28ms 28 Dec 2025 846th kevinnaviapaiva 337 98 10ms 17 Feb 2025 847th polyrtm 330 100 9ms 17 Nov 2018 847th jtaxen 330 100 9ms 18 Mar 2022 849th itsabdelrahman 324 102 9ms 22 May 2018 850th Noah-Fox 311 106 8ms 1 Jun 2022 851st mathu99 287 115 9ms 11 Oct 2017 852nd ryanarobbins 284 116 29ms 4 Jun 2020 853rd Raka-Raka 282 117 10ms 18 Jan 2020 854th zbaklund 277 119 9ms 12 Apr 2018 854th danielproctor31 277 119 10ms 28 Mar 2019 854th patrick96 277 119 10ms 4 Jan 2020 857th jcwebhole 275 120 10ms 28 Jun 2018 858th shuabrannigan 260 127 10ms 3 Apr 2023 859th AlexGoldthorpe 250 132 11ms 23 Oct 2020 860th nephila-nacrea 🇬🇧 236 140 9ms 17 Aug 2020 861st KatieLG-Transpiler 🇬🇧 232 142 9ms 23 Jun 2022 862nd alvincentinio 209 158 12ms 9 Jul 2019 863rd NathanGabrielson 205 161 9ms 30 Mar 2022 864th mothcolada 🇺🇸 192 172 9ms 13 Apr 2021 864th mokymok 🇺🇸 192 172 9ms 9 Nov 2021 866th kmegoryc 177 186 9ms 29 Oct 2019 867th Yen-Peng 173 191 10ms 14 Jul 2020 868th PaulCouthouis 167 198 10ms 30 Nov 2022 869th BKGSr2 164 201 10ms 17 Mar 2023 870th bensrobe 136 243 9ms 25 Feb 2019 871st seanleken 123 269 30ms 7 Oct 2019 First Prev 801–871 of 871
