The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 32 hours. 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 721st NatNgs 609 213 13ms 7 Jan 2020 722nd Solathian 608 128 6ms 17 days ago 723rd llwwns 608 143 39ms 1 May 2023 724th FlyingPenguin223 608 248 6ms 13 Oct 2023 725th vezzick 607 265 219ms 12 Mar 2021 726th arctouch-cristiannevianna 607 270 469ms 16 Nov 2023 727th realslacker 604 172 432ms 6 Jun 2022 728th relet 604 266 1,072ms 10 Aug 2018 728th cbondurant 604 266 37ms 1 Oct 2021 730th ovs-code 🇩🇪 604 296 297ms 7 Jul 2024 731st jared-hughes 603 173 2ms 1 Nov 2022 732nd pandapawskat 603 182 6ms 9 Sep 2021 732nd jb-lopez 🇺🇸 603 182 6ms 8 Nov 2021 734th janbehrens 🇩🇪 603 221 72ms 20 Nov 2022 735th ImpressedByRocks 602 267 29ms 24 Dec 2024 735th codingisgreatbutiamnot 602 267 220ms 8 hours ago 737th igmcdowell 601 216 19ms 27 Jan 2022 737th janbehrens 🇩🇪 601 216 13ms 17 Jun 2023 739th kimbo 🇺🇸 601 328 337ms 16 Dec 2022 740th TomatOid 600 174 2ms 26 May 2021 740th PurkkaKoodari 🇫🇮 600 174 2ms 23 Nov 2024 742nd CatsAreFluffy 600 268 17ms 3 Jan 2023 743rd MeWhenI 🇻🇦 600 272 411ms 27 Jul 2024 744th Nefsen402 598 217 16ms 24 Jan 2019 745th Phanabani 🇺🇸 598 269 315ms 22 Oct 2020 745th msbranicky 598 269 27ms 24 Jul 2023 745th te-chnical 598 269 18ms 23 Nov 2025 748th Shanethegamer 🇺🇸 597 284 252ms 5 Oct 2024 749th stuarthighley 597 330 359ms 25 Apr 2020 750th Szum123321 🇵🇱 597 396 178ms 20 Mar 2024 751st MeWhenI 🇻🇦 596 253 14ms 13 Oct 2023 752nd Michiocre 595 218 14ms 18 Jun 2024 753rd dymowski 595 270 13ms 6 Aug 2019 753rd salipshitz 595 270 24ms 16 Apr 2020 753rd abhishekg999 595 270 344ms 21 Sep 2024 756th TheDarkThatBarks 593 219 13ms 18 May 2024 757th michelebastione 🇮🇹 593 271 338ms 21 Jul 2021 758th dokutan 592 212 155ms 8 Sep 2025 759th lynn 592 245 209ms 22 May 2021 760th ConorOBrien-Foxx 591 147 43ms 10 Apr 2018 760th Waffle3z 591 147 41ms 12 Oct 2020 762nd EnTerr 591 272 17ms 15 Sep 2024 762nd julian-hoelz 591 272 20ms 22 Sep 2024 762nd Pyroan 591 272 323ms 24 Feb 2025 765th urojony 🇵🇱 590 177 2ms 2 Jan 2021 766th neihousaigaai 589 273 14ms 20 Apr 2021 767th abailey2020 🇺🇸 587 274 16ms 13 Dec 2020 767th argusdusty 🇺🇸 587 274 16ms 27 Dec 2020 769th MrPsyware 587 336 315ms 16 Apr 2020 770th qrakhen 586 280 405ms 17 Nov 2025 771st KrausRaus 🇺🇸 585 222 11ms 4 Oct 2020 772nd GameChaos 585 275 361ms 14 May 2021 772nd Lv0Sys 🇵🇱 585 275 15ms 20 Feb 2026 774th dcgjb 584 178 2,734ms 4 Jun 2024 775th user189032 584 339 199ms 29 May 2019 776th wiebecommajonas 584 405 191ms 31 Oct 2021 777th Mandrzejy 🇵🇱 583 179 2ms 14 Apr 2024 778th GrayJoKing 🇦🇺 582 127 5ms 22 Jun 2025 779th Juici 582 223 17ms 8 Feb 2021 779th zakariamouhid 582 223 12ms 10 Jan 2023 781st orifu 582 276 25ms 25 Feb 2021 781st jeff-at-tamer-dot-codes 🇺🇸 582 276 17ms 12 Mar 2023 781st RaBa21 🇭🇺 582 276 16ms 3 Aug 2025 784th weliveinhell 🇭🇹 581 339 295ms 10 Aug 2024 785th lemogne 580 277 284ms 16 Nov 2021 785th rsgray 580 277 19ms 3 Feb 2024 785th greentruff 580 277 21ms 7 Dec 2025 788th Xbot781 579 224 13ms 12 Aug 2023 789th janbehrens 🇩🇪 578 190 7ms 2 Jul 2023 790th SamuelMcGowan 578 278 286ms 12 Jan 2021 790th jatloe 578 278 26ms 28 Oct 2024 792nd zohassadar 577 225 25ms 21 Mar 2025 793rd MeWhenI 🇻🇦 577 231 66ms 29 Nov 2022 794th yzhs 🇩🇪 576 151 38ms 20 Jul 2022 795th MeWhenI 🇻🇦 576 205 8ms 15 Nov 2022 796th mrnomm 576 279 21ms 30 Jul 2022 796th kenballus 576 279 16ms 4 Apr 2023 796th roguh 🇬🇹 576 279 16ms 7 Jan 2024 796th spy404 🇮🇷 576 279 16ms 5 Jun 2024 796th LvLError 576 279 15ms 29 May 2025 First Prev 721–800 of 1,458 Next Last