The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 5 days. Why not try and solve them ahead of time?
brainfuck in Python 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 321st robin-scragg 436 381 19ms 3 Oct 2025 322nd skps2010 435 382 14ms 2 Jan 2019 323rd AforAmpere 433 383 15ms 20 Sep 2023 324th hymanimy 432 384 11ms 5 Dec 2021 324th DrPiranoid 432 384 14ms 2 Oct 2022 326th Andrey135296 431 385 28ms 23 Dec 2022 327th RiedleroD 430 386 12ms 19 Oct 2022 328th l-donovan 427 389 18ms 1 Feb 2024 329th ballaire 425 391 13ms 27 Jan 2024 330th adesanjo 423 392 15ms 21 Jun 2018 331st yuchuehw 422 393 184ms 8 Jan 2024 332nd 1231234md5 🇨🇳 419 396 12ms 11 Dec 2023 333rd WalrusesAreAwesome 416 399 18ms 24 Mar 2025 334th ArmaanAS 415 400 19ms 5 Apr 2021 334th Fracture17 415 400 15ms 15 Apr 2023 336th celiendonze 🇨🇭 414 401 16ms 25 Apr 2023 337th cingulataluke 413 402 15ms 27 Aug 2023 338th fajost 412 403 419ms 10 Sep 2020 339th DrPrettyman 411 404 13ms 4 Jul 2023 340th lmallez 407 408 18ms 14 Jun 2019 341st xenufo 406 409 14ms 18 Nov 2020 342nd mrmena 🇦🇺 402 413 16ms 29 Mar 2024 343rd Peter-Lande 401 414 12ms 5 Jun 2022 343rd zt14427 401 414 17ms 28 Dec 2023 345th Cynthaer 390 426 14ms 6 Dec 2019 346th croc54 384 432 12ms 27 Dec 2024 347th GoodClover 🇬🇧 382 435 15ms 11 Nov 2020 348th PogLop 🇨🇿 372 446 13ms 15 Oct 2022 349th vonKrafft 368 451 15ms 27 Mar 2020 350th twocatsinatrenchcoat 366 453 457ms 20 Jul 2022 351st zuparnowa 356 466 23ms 8 Feb 2019 351st henrytranter 356 466 22ms 20 Sep 2019 353rd EnisEfe0 352 471 14ms 18 May 2025 354th theonlytruemathnerd 345 481 22ms 21 Jul 2020 355th Andrey2001 336 494 26ms 13 days ago 356th TimSvensson 335 496 16ms 10 Apr 2025 357th ArchFin 329 504 13ms 27 Feb 2025 358th CyberTapir 329 505 12ms 30 Aug 2024 359th mbittner20 326 509 13ms 27 Jul 2024 360th unknown25001 322 515 206ms 22 Jul 2024 361st zyc-2024 🇨🇳 321 517 34ms 5 Oct 2024 362nd PikalaxALT 318 522 13ms 21 May 2022 363rd atazzam 🇺🇸 317 523 22ms 27 Feb 2023 364th 404dcd 302 549 16ms 21 Sep 2019 364th Stev51 302 549 14ms 14 Dec 2025 366th kurkale6ka 262 634 13ms 15 Dec 2025 367th Bananapants22 257 647 17ms 26 Aug 2022 368th Haksell 🇦🇶 243 682 13ms 22 Feb 2023 369th NoneTheFewer 240 692 14ms 25 Dec 2025 370th Unknownuserfrommars 228 729 12ms 5 Aug 2025 371st loganmacdougall 🇨🇦 224 741 18ms 19 Nov 2021 372nd MichaelClasby0 🇬🇧 200 830 155ms 15 Oct 2023 373rd kkoenig 175 949 13ms 22 Dec 2023 374th osmith93 166 999 12ms 13 Dec 2022 375th jacobtaxen 152 1,089 13ms 24 Oct 2021 376th jalbertgordon 152 1,091 13ms 23 Oct 2023 377th taha-daneshmand 134 1,242 15ms 2 Oct 2024 378th roupiq 🇵🇱 134 1,243 14ms 20 Feb 2024 379th joshuamkite 133 1,244 15ms 20 Aug 2023 380th AidanWalter 111 1,492 12ms 3 Jan 2025 381st Zhenyu-Bo 70 2,360 13ms 1 Aug 2025 First Prev 321–381 of 381
