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?
Fibonacci in all languages 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 461st voytasify 🇵🇱 965 51 384ms 21 Nov 2021 461st btnlq 965 51 390ms 28 Nov 2021 461st prplz 🇦🇺 965 51 384ms 7 Jan 2022 461st GrayJoKing 🇦🇺 965 51 376ms 17 Oct 2022 461st DialFrost 🇸🇬 965 51 365ms 7 Jan 2023 461st Steffan153 🇫🇮 965 51 380ms 28 Jan 2023 461st peeveen 🇬🇧 965 51 387ms 15 Sep 2023 461st Herbert00709 🇵🇱 965 51 372ms 18 Nov 2023 461st roupiq 🇵🇱 965 51 377ms 19 Feb 2024 461st Mandrzejy 🇵🇱 965 51 351ms 27 Mar 2024 461st jipsong 🇩🇪 965 51 392ms 13 Jun 2024 461st namelessiw 965 51 390ms 13 Jun 2024 461st Jacob385 965 51 381ms 30 Jul 2024 461st pardouin 🇫🇷 965 51 435ms 24 Sep 2024 461st stefangimmillaro 965 51 438ms 24 Sep 2024 461st b-illy 🇬🇧 965 51 383ms 17 Jan 2025 461st Yax42 🇫🇷 965 51 439ms 6 Feb 2025 461st fuzzylojik-golf 🇺🇸 965 51 379ms 2 Jun 2025 461st AdrienHache 🇫🇷 965 51 421ms 7 Sep 2025 461st Decrare 965 51 430ms 11 Sep 2025 461st snoozingnewt 🇨🇦 965 51 415ms 4 Oct 2025 461st edsrzf 🇳🇿 965 51 432ms 31 Dec 2025 503rd pardouin 🇫🇷 964 57 364ms 24 Sep 2025 503rd DialFrost 🇸🇬 964 57 492ms 24 Sep 2025 503rd JayXon 🇺🇸 964 57 475ms 24 Sep 2025 503rd fuzzylojik-golf 🇺🇸 964 57 629ms 24 Sep 2025 503rd snoozingnewt 🇨🇦 964 57 341ms 24 Sep 2025 503rd b-illy 🇬🇧 964 57 358ms 24 Sep 2025 503rd sean-niemann 🇺🇸 964 57 479ms 24 Sep 2025 503rd GolfingSuccess 🇬🇷 964 57 432ms 25 Sep 2025 503rd btnlq 964 57 428ms 25 Sep 2025 503rd nwellnhof 🇩🇪 964 57 444ms 25 Sep 2025 503rd namelessiw 964 57 367ms 2 Oct 2025 503rd ovs-code 🇩🇪 964 57 493ms 3 Oct 2025 503rd Yax42 🇫🇷 964 57 492ms 4 Oct 2025 503rd stefangimmillaro 964 57 470ms 6 Oct 2025 503rd Apataras 964 57 386ms 7 Oct 2025 503rd Jacob385 964 57 443ms 27 Oct 2025 503rd MeWhenI 🇻🇦 964 57 402ms 7 Nov 2025 503rd cefqrn 964 57 369ms 17 Nov 2025 503rd sisyphus-ppcg 🇦🇺 964 57 378ms 25 Nov 2025 503rd h3ra993huskp 🇯🇵 964 57 480ms 30 Nov 2025 503rd KasperKivimaeki 🇫🇮 964 57 457ms 2 Dec 2025 503rd Lydxn 🇨🇦 964 57 443ms 12 Dec 2025 503rd edsrzf 🇳🇿 964 57 460ms 31 Dec 2025 503rd Steffan153 🇫🇮 964 57 367ms 11 Feb 2026 503rd Herbert00709 🇵🇱 964 57 352ms 18 days ago 528th HPWiz 🇳🇿 963 28 205ms 30 Jan 2021 528th JayXon 🇺🇸 963 28 184ms 20 Jun 2021 528th Lydxn 🇨🇦 963 28 204ms 20 Jun 2021 528th btnlq 963 28 174ms 4 Feb 2022 528th antimon2 🇯🇵 963 28 206ms 28 Oct 2022 528th sisyphus-ppcg 🇦🇺 963 28 185ms 7 Mar 2023 528th Steffan153 🇫🇮 963 28 190ms 8 Mar 2023 528th tidalDisruptionEvent 🇨🇦 963 28 200ms 14 Mar 2023 528th lynn 963 28 210ms 14 Mar 2023 528th ovs-code 🇩🇪 963 28 193ms 15 Mar 2023 528th alemelis 963 28 179ms 20 Mar 2023 528th DialFrost 🇸🇬 963 28 210ms 2 Jan 2024 528th twolfive 963 28 189ms 5 Oct 2024 528th sean-niemann 🇺🇸 963 28 206ms 24 Jan 2025 528th plcc0 963 28 189ms 25 Feb 2026 543rd icy-lava 961 43 1ms 5 Feb 2018 543rd Erutuon 961 43 1ms 21 Feb 2018 543rd Florob 961 43 1ms 1 Apr 2018 543rd kartik-s 961 43 1ms 13 Apr 2018 543rd cafehaine 🇫🇷 961 43 1ms 30 Jul 2018 543rd esparano 961 43 2ms 25 Apr 2019 543rd primo-ppcg 🇹🇭 961 43 1ms 15 Feb 2020 543rd Shanethegamer 🇺🇸 961 43 1ms 23 Feb 2020 543rd GalladeGuy 🇺🇸 961 43 1ms 23 Feb 2020 543rd prplz 🇦🇺 961 43 1ms 24 Feb 2020 543rd DaCoolOne 961 43 1ms 25 Feb 2020 543rd Attero 🇸🇪 961 43 1ms 5 Mar 2020 543rd bastienvoirin 🇫🇷 961 43 1ms 5 Apr 2020 543rd Darkrizen7 961 43 1ms 8 Apr 2020 543rd dmoa 961 43 1ms 10 Jul 2020 543rd janbehrens 🇩🇪 961 43 1ms 20 Aug 2020 543rd Waffle3z 961 43 1ms 25 Sep 2020 543rd marcin7Cd 961 43 1ms 8 Oct 2020 First Prev 481–560 of 9,889 Next Last