The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 5 days. Why not try and solve them ahead of time?
Fibonacci 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 444th fuzzylojik-golf 🇺🇸 965 51 379ms 2 Jun 2025 444th AdrienHache 🇫🇷 965 51 421ms 7 Sep 2025 444th Decrare 965 51 430ms 11 Sep 2025 444th snoozingnewt 🇨🇦 965 51 415ms 4 Oct 2025 444th edsrzf 🇳🇿 965 51 432ms 31 Dec 2025 486th pardouin 🇫🇷 964 57 449ms 24 Sep 2025 486th DialFrost 🇸🇬 964 57 492ms 24 Sep 2025 486th JayXon 🇺🇸 964 57 475ms 24 Sep 2025 486th fuzzylojik-golf 🇺🇸 964 57 629ms 24 Sep 2025 486th snoozingnewt 🇨🇦 964 57 341ms 24 Sep 2025 486th b-illy 🇬🇧 964 57 358ms 24 Sep 2025 486th sean-niemann 🇺🇸 964 57 479ms 24 Sep 2025 486th GolfingSuccess 🇬🇷 964 57 432ms 25 Sep 2025 486th btnlq 964 57 428ms 25 Sep 2025 486th nwellnhof 🇩🇪 964 57 444ms 25 Sep 2025 486th namelessiw 964 57 367ms 2 Oct 2025 486th ovs-code 🇩🇪 964 57 493ms 3 Oct 2025 486th Yax42 🇫🇷 964 57 492ms 4 Oct 2025 486th stefangimmillaro 964 57 470ms 6 Oct 2025 486th Apataras 964 57 386ms 7 Oct 2025 486th Jacob385 964 57 443ms 27 Oct 2025 486th MeWhenI 🇻🇦 964 57 402ms 7 Nov 2025 486th cefqrn 964 57 369ms 17 Nov 2025 486th sisyphus-ppcg 🇦🇺 964 57 378ms 25 Nov 2025 486th h3ra993huskp 🇯🇵 964 57 480ms 30 Nov 2025 486th KasperKivimaeki 🇫🇮 964 57 457ms 2 Dec 2025 486th Lydxn 🇨🇦 964 57 443ms 12 Dec 2025 486th edsrzf 🇳🇿 964 57 460ms 31 Dec 2025 486th Steffan153 🇫🇮 964 57 367ms 11 Feb 2026 486th Herbert00709 🇵🇱 964 57 352ms 15 days ago 511th HPWiz 🇳🇿 963 28 205ms 30 Jan 2021 511th JayXon 🇺🇸 963 28 184ms 20 Jun 2021 511th Lydxn 🇨🇦 963 28 204ms 20 Jun 2021 511th btnlq 963 28 174ms 4 Feb 2022 511th antimon2 🇯🇵 963 28 206ms 27 Oct 2022 511th sisyphus-ppcg 🇦🇺 963 28 185ms 7 Mar 2023 511th Steffan153 🇫🇮 963 28 190ms 8 Mar 2023 511th tidalDisruptionEvent 🇨🇦 963 28 200ms 14 Mar 2023 511th lynn 963 28 210ms 14 Mar 2023 511th ovs-code 🇩🇪 963 28 193ms 15 Mar 2023 511th alemelis 963 28 179ms 20 Mar 2023 511th DialFrost 🇸🇬 963 28 210ms 2 Jan 2024 511th twolfive 963 28 189ms 5 Oct 2024 511th sean-niemann 🇺🇸 963 28 206ms 24 Jan 2025 511th plcc0 963 28 189ms 25 Feb 2026 526th icy-lava 961 43 1ms 5 Feb 2018 526th Erutuon 961 43 1ms 21 Feb 2018 526th Florob 961 43 1ms 1 Apr 2018 526th kartik-s 961 43 1ms 13 Apr 2018 526th cafehaine 🇫🇷 961 43 1ms 30 Jul 2018 526th esparano 961 43 2ms 25 Apr 2019 526th primo-ppcg 🇹🇭 961 43 1ms 15 Feb 2020 526th Shanethegamer 🇺🇸 961 43 1ms 23 Feb 2020 526th GalladeGuy 🇺🇸 961 43 1ms 23 Feb 2020 526th prplz 🇦🇺 961 43 1ms 24 Feb 2020 526th DaCoolOne 961 43 1ms 25 Feb 2020 526th Attero 🇸🇪 961 43 1ms 5 Mar 2020 526th bastienvoirin 🇫🇷 961 43 1ms 5 Apr 2020 526th Darkrizen7 961 43 1ms 8 Apr 2020 526th dmoa 961 43 1ms 10 Jul 2020 526th janbehrens 🇩🇪 961 43 1ms 20 Aug 2020 526th Waffle3z 961 43 1ms 25 Sep 2020 526th marcin7Cd 961 43 1ms 8 Oct 2020 526th GoateSo 961 43 1ms 18 Oct 2020 526th BBoehm 🇩🇪 961 43 1ms 4 Jan 2021 526th GrayJoKing 🇦🇺 961 43 1ms 12 Jan 2021 526th Lydxn 🇨🇦 961 43 1ms 13 Jan 2021 526th Irratix 🇳🇱 961 43 1ms 14 Jan 2021 526th sisyphus-ppcg 🇦🇺 961 43 1ms 20 Jan 2021 526th JayXon 🇺🇸 961 43 1ms 19 Feb 2021 526th oljoi 961 43 1ms 2 Apr 2021 526th s-g-stavely 961 43 1ms 3 May 2021 526th MatheusAvellar 🇧🇷 961 43 1ms 6 May 2021 526th Natanaelel 🇸🇪 961 43 1ms 18 May 2021 526th call23re 961 43 1ms 4 Sep 2021 526th StarmaQ 961 43 1ms 10 Sep 2021 526th btnlq 961 43 1ms 27 Sep 2021 526th MeWhenI 🇻🇦 961 43 1ms 11 Oct 2021 526th RockOfStone 961 43 1ms 8 Nov 2021 526th funkkiy 🇧🇷 961 43 1ms 20 Nov 2021 First Prev 481–560 of 9,822 Next Last