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 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 776th DialFrost 🇸🇬 953 46 1,475ms 6 Dec 2023 776th namelessiw 953 46 1ms 28 Dec 2023 776th kkoenig 953 46 2ms 28 Dec 2023 776th byronknoll 🇺🇸 953 46 1ms 6 Feb 2024 776th SadiinsoSnowfall 🇫🇷 953 46 1ms 14 Feb 2024 776th Jonatan6 🇩🇰 953 46 1ms 15 Mar 2024 776th Herbert00709 🇵🇱 953 46 1ms 1 Apr 2024 776th Mandrzejy 🇵🇱 953 46 1ms 12 Apr 2024 776th Luca2812 953 46 1ms 11 Sep 2024 776th FlyingPenguin223 953 46 1ms 28 Sep 2024 776th pardouin 🇫🇷 953 46 1ms 29 Sep 2024 776th SimBys 953 46 1ms 22 Oct 2024 776th kaurakeksi 🇫🇮 953 46 1ms 29 Dec 2024 776th kivibot 🇫🇮 953 46 1,589ms 30 Dec 2024 776th Iznoanygod 🇺🇸 953 46 1ms 16 Apr 2025 776th fuzzylojik-golf 🇺🇸 953 46 2ms 31 May 2025 776th Mukundan314 953 46 1,391ms 31 May 2025 776th b-illy 🇬🇧 953 46 1ms 31 May 2025 776th oscargeerts 953 46 1ms 23 Jun 2025 776th iczelia 🇩🇪 953 46 1ms 16 Oct 2025 776th cefqrn 953 46 2ms 17 Nov 2025 776th snoozingnewt 🇨🇦 953 46 2ms 3 Dec 2025 776th Yax42 🇫🇷 953 46 2ms 8 Jan 2026 776th vang1ong7ang 953 46 2ms 11 days ago 825th rambox11 952 34 10ms 25 Mar 2018 825th frobinsonj 952 34 10ms 28 Jun 2018 825th squadb3 952 34 14ms 11 Oct 2019 825th andersk 🇺🇸 952 34 11ms 21 Mar 2020 825th jwalaszek 952 34 9ms 15 May 2020 825th cywong-amino 🇭🇰 952 34 13ms 3 Jul 2020 825th daisy-lau 952 34 11ms 6 Jul 2020 825th guliyevemil1 🇦🇿 952 34 10ms 3 Feb 2021 825th Darrennchan8 952 34 10ms 23 Aug 2021 825th didion0 🇺🇸 952 34 9ms 14 Feb 2022 825th eranws 952 34 9ms 28 Oct 2022 825th Nicronmil 952 34 9ms 22 Nov 2022 825th DayDun 🇸🇪 952 34 10ms 23 Jan 2023 825th scpchicken 🇵🇼 952 34 10ms 4 Feb 2023 825th kkoenig 952 34 9ms 8 Jan 2024 825th Kacarott 🇦🇺 952 34 10ms 6 Jun 2024 825th targrik 952 34 10ms 5 Feb 2025 842nd Steffan153 🇫🇮 951 32 376ms 18 Jan 2024 842nd Lydxn 🇨🇦 951 32 414ms 20 Jan 2024 842nd JayXon 🇺🇸 951 32 364ms 25 Jan 2024 842nd sean-niemann 🇺🇸 951 32 430ms 24 Jan 2025 842nd GolfingSuccess 🇬🇷 951 32 452ms 31 Aug 2025 847th primo-ppcg 🇹🇭 950 28 1,021ms 31 Jan 2022 847th HPWiz 🇳🇿 950 28 1,021ms 20 Feb 2022 847th Sakisan 🇧🇪 950 28 1,021ms 11 Jul 2022 850th sisyphus-ppcg 🇦🇺 949 33 1ms 30 Oct 2022 850th Lydxn 🇨🇦 949 33 1ms 18 Jan 2025 852nd sisyphus-ppcg 🇦🇺 948 38 121ms 29 May 2021 852nd Lydxn 🇨🇦 948 38 121ms 4 Nov 2021 854th CaedenHarper 🇨🇦 948 58 437ms 24 Sep 2025 854th error256 948 58 515ms 24 Sep 2025 854th Shanethegamer 🇺🇸 948 58 444ms 25 Sep 2025 854th FlyingPenguin223 948 58 454ms 25 Sep 2025 854th emgordon154 948 58 461ms 25 Sep 2025 854th duckyluuk 🇳🇱 948 58 447ms 25 Sep 2025 854th m-tkach 🇺🇦 948 58 373ms 25 Sep 2025 854th voytxt 🇨🇿 948 58 447ms 25 Sep 2025 854th Yewzir 🇧🇪 948 58 364ms 2 Oct 2025 854th Andrey2001 948 58 364ms 24 Nov 2025 854th dokutan 948 58 382ms 21 Feb 2026 854th raphaelimahorn 948 58 403ms 18 days ago 866th JayXon 🇺🇸 947 45 87ms 11 Oct 2022 866th stefangimmillaro 947 45 81ms 7 May 2023 868th I-Love-47 🇺🇦 947 70 65ms 8 Feb 2022 868th ZakkkkAttackkkk 🇵🇭 947 70 62ms 27 Jul 2022 868th FlorianCassayre 🇫🇷 947 70 59ms 10 Oct 2022 868th thatbirdguythatuknownot 947 70 60ms 8 Jan 2023 868th tailorspy 947 70 58ms 15 Mar 2023 868th neel11235813 947 70 62ms 16 Dec 2023 868th wlaud9 947 70 61ms 5 Feb 2024 868th SadiinsoSnowfall 🇫🇷 947 70 58ms 15 Feb 2024 868th oceko 947 70 76ms 19 Feb 2024 868th bac0id 947 70 65ms 23 Feb 2024 868th IlkkaTakala 947 70 63ms 26 Apr 2024 868th cefqrn 947 70 60ms 26 May 2024 868th Kacarott 🇦🇺 947 70 59ms 29 Aug 2024 First Prev 801–880 of 9,854 Next Last