The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 4 days. Why not try and solve them ahead of time?
brainfuck 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 401st Johannesd3 758 312 182ms 2 Feb 2021 402nd Shanethegamer 🇺🇸 757 167 1,605ms 2 Nov 2022 403rd stefangimmillaro 757 235 691ms 6 Oct 2025 404th inventshah 755 172 20ms 7 May 2021 404th MathisBullinger 755 172 14ms 28 Nov 2021 404th Salutations45 755 172 13ms 18 Nov 2024 407th SwordF-Official 🇺🇸 755 212 8ms 9 Sep 2025 408th 2011-Chan-Ethan 755 213 50ms 16 Sep 2023 409th stefangimmillaro 755 261 301ms 21 Sep 2024 410th artyom-razinov 754 318 187ms 13 Feb 2020 411th snyderek 🇺🇸 753 177 66ms 23 Nov 2024 412th elgan65536 🇺🇸 753 314 157ms 28 Mar 2024 413th MeWhenI 🇻🇦 752 168 1,534ms 15 Feb 2023 414th atenfyr 751 213 3ms 21 Jun 2020 414th Shanethegamer 🇺🇸 751 213 4ms 5 Oct 2024 414th Blendi-Goose 751 213 3ms 5 Oct 2025 417th SirBogman 🇺🇸 750 116 45ms 26 Dec 2023 418th user189032 750 173 13ms 29 May 2019 418th daniel-pedersen 🇸🇪 750 173 13ms 6 Mar 2022 418th kirjavascript 750 173 13ms 12 Oct 2025 421st SirBogman 🇺🇸 748 104 6ms 7 Jun 2024 422nd Shanethegamer 🇺🇸 748 182 11ms 28 Sep 2024 423rd xorraxrax 748 215 21ms 31 Oct 2019 423rd dzshn 748 215 43ms 7 Feb 2023 423rd yokasuretsu 748 215 22ms 7 Jan 2025 426th alexkunin 746 174 15ms 11 Jul 2019 426th two-bad 🇬🇧 746 174 13ms 23 Feb 2024 426th helbling 🇨🇭 746 174 16ms 24 Apr 2024 426th TeodorDyakov 🇧🇬 746 174 13ms 13 Jan 2026 430th MeWhenI 🇻🇦 746 220 472ms 19 Jun 2025 430th Yax42 🇫🇷 746 220 440ms 3 Aug 2025 432nd MeWhenI 🇻🇦 746 246 3,079ms 2 Dec 2024 433rd SirBogman 🇺🇸 744 190 659ms 20 Jan 2024 434th lrustand 744 216 22ms 1 Feb 2018 435th MeWhenI 🇻🇦 744 239 505ms 7 Nov 2025 436th lynn 744 266 360ms 19 Sep 2021 437th mousetail 🇳🇱 743 318 150ms 14 Mar 2024 438th kcinnu 🇱🇹 742 175 14ms 2 May 2023 438th CaedenHarper 🇨🇦 742 175 13ms 7 Oct 2025 438th Protothor 742 175 14ms 17 days ago 441st martion2007 741 217 22ms 22 Sep 2024 442nd dloscutoff 739 171 954ms 27 Nov 2018 443rd namelessiw 739 222 491ms 9 Apr 2025 444th Argeento 🇵🇱 738 170 194ms 3 Aug 2024 444th emgordon154 738 170 167ms 14 May 2025 446th proton 🇩🇪 737 118 42ms 9 Jun 2020 446th anter69 🇭🇺 737 118 44ms 19 Mar 2024 448th not-optikk 🇺🇸 737 217 3ms 14 Dec 2022 449th dzhang314 737 218 22ms 15 Aug 2019 449th netfri25 🇮🇱 737 218 21ms 14 Feb 2026 451st ovs-code 🇩🇪 735 230 471ms 27 Jul 2024 452nd Mikey-Beep 🇬🇧 734 219 21ms 5 Sep 2024 453rd QuincyNash 🇺🇸 733 177 16ms 29 Nov 2025 454th GrayJoKing 🇦🇺 732 223 394ms 8 May 2022 455th edsrzf 🇳🇿 732 225 145ms 23 Mar 2025 456th dim-an 731 220 31ms 9 Dec 2020 456th PaulMWeiser 731 220 24ms 26 Feb 2023 456th commandz0 🇺🇸 731 220 24ms 12 Apr 2023 456th ahmetdemirag 🇨🇾 731 220 375ms 25 Apr 2025 460th CatsAreFluffy 730 83 54ms 30 Jan 2023 461st CaedenHarper 🇨🇦 729 138 2,464ms 4 Sep 2025 462nd iliazeus 729 178 15ms 10 Mar 2023 462nd tayloia 🇬🇧 729 178 14ms 15 May 2023 464th hughsimpson 727 107 28ms 2 Feb 2018 465th jhu04 727 221 22ms 18 Jan 2024 465th snydej 727 221 245ms 28 Nov 2024 467th dokutan 727 279 9ms 21 Feb 2025 468th edsrzf 🇳🇿 726 475 174ms 7 Mar 2025 469th Lv0Sys 🇵🇱 725 179 15ms 21 Dec 2025 470th WilliamDeBlieck 725 180 570ms 26 days ago 471st m42km 725 195 518ms 3 Feb 2024 472nd edsrzf 🇳🇿 725 208 9ms 25 days ago 473rd dokutan 724 139 3,245ms 30 Aug 2025 474th daedals 724 222 28ms 12 Jun 2019 474th PyPylia 🇦🇺 724 222 22ms 24 May 2021 474th diddily 724 222 22ms 18 Nov 2022 474th fkantelberg 724 222 24ms 17 Jul 2023 478th ian-h-chamberlain 🇺🇸 723 327 171ms 26 Jul 2022 479th HumanoidCPU 723 332 122ms 29 Mar 2025 480th SirBogman 🇺🇸 723 435 83ms 6 Nov 2022 First Prev 401–480 of 1,458 Next Last