The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 3 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 753rd vang1ong7ang 953 46 2ms 9 days ago 802nd 0xjac 🇨🇭 953 78 296ms 26 Apr 2020 802nd megaturbo 953 78 295ms 11 Jun 2020 802nd roflolilolmao 953 78 297ms 11 Jun 2020 802nd nwellnhof 🇩🇪 953 78 297ms 12 Jul 2020 802nd JayXon 🇺🇸 953 78 304ms 27 Dec 2020 802nd Lydxn 🇨🇦 953 78 290ms 14 Sep 2021 802nd MeWhenI 🇻🇦 953 78 288ms 9 Feb 2023 802nd emplv 🇱🇻 953 78 272ms 28 Mar 2023 802nd Steffan153 🇫🇮 953 78 285ms 29 Mar 2023 802nd stefangimmillaro 953 78 290ms 20 Jun 2023 802nd sean-niemann 🇺🇸 953 78 289ms 27 Jun 2023 802nd Yewzir 🇧🇪 953 78 290ms 21 Oct 2023 802nd Betuaredead 953 78 292ms 12 Nov 2023 802nd sisyphus-ppcg 🇦🇺 953 78 277ms 16 Nov 2023 802nd kkoenig 953 78 299ms 29 Dec 2023 802nd DialFrost 🇸🇬 953 78 280ms 19 Sep 2024 802nd pardouin 🇫🇷 953 78 289ms 29 Sep 2024 802nd fuzzylojik-golf 🇺🇸 953 78 291ms 15 Jul 2025 802nd KasperKivimaeki 🇫🇮 953 78 313ms 11 Dec 2025 802nd albanian-laundromat 953 78 295ms 26 Dec 2025 802nd GolfingSuccess 🇬🇷 953 78 284ms 20 Jan 2026 823rd rambox11 952 34 10ms 25 Mar 2018 823rd frobinsonj 952 34 10ms 28 Jun 2018 823rd squadb3 952 34 14ms 11 Oct 2019 823rd andersk 🇺🇸 952 34 11ms 21 Mar 2020 823rd jwalaszek 952 34 9ms 15 May 2020 823rd cywong-amino 🇭🇰 952 34 13ms 3 Jul 2020 823rd daisy-lau 952 34 11ms 6 Jul 2020 823rd guliyevemil1 🇦🇿 952 34 10ms 3 Feb 2021 823rd Darrennchan8 952 34 10ms 23 Aug 2021 823rd didion0 🇺🇸 952 34 9ms 14 Feb 2022 823rd eranws 952 34 9ms 28 Oct 2022 823rd Nicronmil 952 34 9ms 22 Nov 2022 823rd DayDun 🇸🇪 952 34 10ms 23 Jan 2023 823rd scpchicken 🇵🇼 952 34 10ms 4 Feb 2023 823rd kkoenig 952 34 9ms 8 Jan 2024 823rd Kacarott 🇦🇺 952 34 10ms 6 Jun 2024 823rd targrik 952 34 10ms 5 Feb 2025 840th Steffan153 🇫🇮 951 32 376ms 18 Jan 2024 840th Lydxn 🇨🇦 951 32 414ms 20 Jan 2024 840th JayXon 🇺🇸 951 32 364ms 25 Jan 2024 840th sean-niemann 🇺🇸 951 32 430ms 24 Jan 2025 840th GolfingSuccess 🇬🇷 951 32 452ms 31 Aug 2025 845th primo-ppcg 🇹🇭 950 28 1,021ms 31 Jan 2022 845th HPWiz 🇳🇿 950 28 1,021ms 20 Feb 2022 845th Sakisan 🇧🇪 950 28 1,021ms 11 Jul 2022 848th sisyphus-ppcg 🇦🇺 948 33 1ms 30 Oct 2022 848th Lydxn 🇨🇦 948 33 1ms 18 Jan 2025 850th sisyphus-ppcg 🇦🇺 948 38 121ms 29 May 2021 850th Lydxn 🇨🇦 948 38 121ms 4 Nov 2021 852nd CaedenHarper 🇨🇦 948 58 437ms 24 Sep 2025 852nd error256 948 58 515ms 24 Sep 2025 852nd Shanethegamer 🇺🇸 948 58 444ms 25 Sep 2025 852nd FlyingPenguin223 948 58 454ms 25 Sep 2025 852nd emgordon154 948 58 461ms 25 Sep 2025 852nd duckyluuk 🇳🇱 948 58 447ms 25 Sep 2025 852nd m-tkach 🇺🇦 948 58 373ms 25 Sep 2025 852nd voytxt 🇨🇿 948 58 447ms 25 Sep 2025 852nd Yewzir 🇧🇪 948 58 364ms 2 Oct 2025 852nd Andrey2001 948 58 364ms 24 Nov 2025 852nd dokutan 948 58 382ms 21 Feb 2026 852nd raphaelimahorn 948 58 403ms 16 days ago 864th JayXon 🇺🇸 947 45 87ms 11 Oct 2022 864th stefangimmillaro 947 45 81ms 7 May 2023 866th I-Love-47 🇺🇦 947 70 65ms 8 Feb 2022 866th ZakkkkAttackkkk 🇵🇭 947 70 62ms 27 Jul 2022 866th FlorianCassayre 🇫🇷 947 70 59ms 10 Oct 2022 866th thatbirdguythatuknownot 947 70 60ms 8 Jan 2023 866th tailorspy 947 70 58ms 15 Mar 2023 866th neel11235813 947 70 62ms 16 Dec 2023 866th wlaud9 947 70 61ms 5 Feb 2024 866th SadiinsoSnowfall 🇫🇷 947 70 58ms 15 Feb 2024 866th oceko 947 70 76ms 19 Feb 2024 866th bac0id 947 70 65ms 23 Feb 2024 866th IlkkaTakala 947 70 63ms 26 Apr 2024 866th cefqrn 947 70 60ms 26 May 2024 866th Kacarott 🇦🇺 947 70 59ms 29 Aug 2024 866th plcc0 947 70 58ms 27 Mar 2025 866th emgordon154 947 70 54ms 1 Jun 2025 First Prev 801–880 of 9,823 Next Last