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 720th edre 960 37 10ms 2 May 2018 720th tjtnorton 960 37 10ms 8 Nov 2018 720th PawaritL 960 37 10ms 28 Jan 2019 720th PFischbeck 960 37 9ms 2 Aug 2019 720th hoodadam 960 37 9ms 25 Oct 2019 720th CyberTapir 960 37 9ms 29 Jul 2020 720th McAidan99 960 37 10ms 29 Jul 2020 720th obamaman360 960 37 9ms 29 Jul 2020 720th PhonicCanine 960 37 9ms 1 Aug 2020 720th BBoehm 🇩🇪 960 37 10ms 8 Dec 2020 720th neihousaigaai 960 37 10ms 8 May 2021 720th jacklynnepenick 960 37 9ms 13 Aug 2021 720th jrm5399 🇰🇿 960 37 9ms 31 Jan 2022 720th mathisfun271 960 37 9ms 5 Mar 2022 720th Nicronmil 960 37 9ms 22 Nov 2022 720th CatsAreFluffy 960 37 9ms 18 Feb 2023 720th cesarm4 960 37 9ms 30 Apr 2023 720th AlexanderFair 960 37 9ms 29 Jun 2023 720th nyoshe 960 37 11ms 10 Oct 2023 720th Grrisly 960 37 9ms 9 Nov 2023 720th 5cw 🇺🇸 960 37 9ms 13 Jul 2024 720th Zounon 960 37 11ms 18 Sep 2025 720th hellopir2 960 37 10ms 11 Oct 2025 720th Coolbeansyeah 960 37 11ms 18 Feb 2026 745th JayXon 🇺🇸 958 64 135ms 14 Jan 2022 745th kumavale 958 64 126ms 14 Jan 2022 745th frozolotl 958 64 133ms 19 Jan 2022 745th lyphyser 958 64 128ms 21 Jul 2023 745th lynn 958 64 118ms 7 Jul 2024 745th acotis 958 64 126ms 23 Jan 2025 745th DialFrost 🇸🇬 958 64 133ms 4 Apr 2025 745th edsrzf 🇳🇿 958 64 131ms 5 Apr 2025 745th pardouin 🇫🇷 958 64 127ms 17 Apr 2025 745th error256 958 64 140ms 17 Apr 2025 745th emgordon154 958 64 131ms 18 Apr 2025 745th ovs-code 🇩🇪 958 64 155ms 20 Apr 2025 745th plcc0 958 64 130ms 21 Apr 2025 745th sean-niemann 🇺🇸 958 64 127ms 4 Jun 2025 745th Shanethegamer 🇺🇸 958 64 128ms 13 Jun 2025 745th brie-r 958 64 135ms 26 Nov 2025 745th ian-h-chamberlain 🇺🇸 958 64 126ms 18 Dec 2025 745th elgan65536 🇺🇸 958 64 132ms 7 Feb 2026 745th Steffan153 🇫🇮 958 64 151ms 16 Feb 2026 745th cefqrn 958 64 127ms 10 days ago 745th vang1ong7ang 958 64 131ms 10 days ago 766th sisyphus-ppcg 🇦🇺 953 28 89ms 14 Dec 2022 766th Lydxn 🇨🇦 953 28 92ms 15 Dec 2022 766th DialFrost 🇸🇬 953 28 93ms 5 Jul 2025 766th ovs-code 🇩🇪 953 28 90ms 11 Dec 2025 770th prplz 🇦🇺 953 47 2ms 9 Mar 2019 770th filharmonista 953 47 1ms 13 Mar 2020 770th Attero 🇸🇪 953 47 1ms 14 May 2020 770th nwellnhof 🇩🇪 953 47 1ms 4 Oct 2020 770th primo-ppcg 🇹🇭 953 47 1ms 5 Oct 2020 770th alexdreptate 953 47 2ms 9 Oct 2020 770th paulcirstean-yonder 🇷🇴 953 47 1ms 10 Oct 2020 770th urojony 🇵🇱 953 47 1ms 28 Dec 2020 770th GrayJoKing 🇦🇺 953 47 1ms 9 Jan 2021 770th mihaits 953 47 2ms 29 Jan 2021 770th NewDefectus 🇮🇱 953 47 2ms 1 Feb 2021 770th MatheusAvellar 🇧🇷 953 47 1ms 7 May 2021 770th inventshah 953 47 1ms 8 May 2021 770th pandapawskat 953 47 1ms 1 Sep 2021 770th Irratix 🇳🇱 953 47 1ms 1 Sep 2021 770th lynn 953 47 2ms 2 Oct 2021 770th vang1ong7ang 953 47 1ms 26 Oct 2021 770th janbehrens 🇩🇪 953 47 1ms 26 Oct 2021 770th m-tkach 🇺🇦 953 47 1ms 2 Dec 2021 770th SirBogman 🇺🇸 953 47 1ms 14 Dec 2021 770th btnlq 953 47 1ms 5 Jan 2022 770th jared-hughes 953 47 1ms 4 Mar 2022 770th shellbertt 🇨🇦 953 47 1ms 7 Apr 2022 770th saito-ta 🇯🇵 953 47 1ms 21 Jun 2022 770th Shanethegamer 🇺🇸 953 47 1ms 11 Jul 2022 770th AlephSquirrel 953 47 1ms 16 Jul 2022 770th ZakkkkAttackkkk 🇵🇭 953 47 1ms 26 Jul 2022 770th FlorianCassayre 🇫🇷 953 47 1ms 8 Oct 2022 770th ValentinCassayre 953 47 1ms 8 Oct 2022 770th Alex-x90 🇺🇸 953 47 2ms 17 Oct 2022 770th MeWhenI 🇻🇦 953 47 2ms 17 Oct 2022 First Prev 721–800 of 9,889 Next Last