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 241st schachmattmatt 551 301 344ms 29 Sep 2021 241st FranklinJiaChen 551 301 34ms 4 Jul 2024 243rd myleopard 548 303 27ms 15 Oct 2021 243rd Heathcorp 🇦🇺 548 303 23ms 5 Dec 2022 243rd BREMAUCY 🇫🇷 548 303 226ms 21 Jul 2025 243rd yoikolover 548 303 19ms 11 Dec 2025 247th nstearns96 🇬🇧 546 304 271ms 22 Jan 2023 247th osNiko 🇧🇷 546 304 14ms 19 Aug 2025 249th DarkTemplar5 542 306 36ms 25 Feb 2020 249th knutae 🇳🇴 542 306 24ms 13 Nov 2021 251st LeeCamp 541 307 274ms 19 Feb 2022 251st namelessiw 541 307 15ms 15 Jan 2024 253rd inverseLorentz 🇦🇺 539 308 19ms 14 May 2024 253rd AtengChen 539 308 151ms 7 Sep 2024 253rd AnnoyedArt1256 539 308 27ms 7 Jan 2025 256th johnathanleung18 537 309 398ms 3 Oct 2021 256th midnattssol 🇸🇪 537 309 26ms 19 Oct 2023 258th andre-lameirinhas 🇵🇹 534 311 321ms 22 Jun 2020 258th jacekwladzinski 534 311 15ms 8 Oct 2025 260th GeorgePerreault 532 312 18ms 6 Jun 2020 261st edre 530 313 32ms 7 Jun 2018 261st keelimeguy 🇺🇸 530 313 14ms 17 May 2025 263rd giacomogallina 529 314 497ms 4 Jan 2020 264th RandGuy 527 315 16ms 9 Nov 2022 264th hiichbindermax 527 315 17ms 3 Sep 2024 264th Alex-Huggett 🇬🇧 527 315 19ms 14 Sep 2025 267th hjcafaroUC 525 316 324ms 9 Aug 2020 268th karhuthebear 524 317 277ms 11 May 2022 268th CutSandstone 524 317 21ms 19 Jul 2024 268th qpwoeirut 524 317 16ms 16 Jul 2025 271st rollershutter 522 318 14ms 11 Oct 2022 272nd 40fied4t 520 319 33ms 6 May 2025 273rd ieeemma 519 320 23ms 1 Feb 2020 274th JunkIce 517 321 321ms 3 Dec 2024 275th rowboat1 511 325 18ms 14 Jun 2022 276th Supermac30 509 326 22ms 3 Jan 2023 276th luuumine 🇫🇷 509 326 20ms 9 Oct 2025 278th bend-n 508 327 32ms 27 Jan 2024 279th adoxography 506 328 18ms 29 Apr 2024 280th leon-w 505 329 22ms 13 Jul 2019 280th ludwig-n 505 329 17ms 7 Apr 2021 282nd richard-oelze 🇩🇪 503 330 335ms 7 May 2021 283rd zgialor-lab 502 331 385ms 1 Feb 2026 284th Bodo171 500 332 146ms 6 Dec 2022 285th Deepztream 496 335 19ms 27 Aug 2018 285th zax2002 496 335 419ms 7 Sep 2020 285th OSYCh314 🇦🇺 496 335 336ms 23 Mar 2025 288th Stockoh 🇫🇷 494 336 28ms 1 May 2024 289th Just4FunCoder 490 339 281ms 26 Mar 2023 289th WillowWispy 490 339 12ms 22 Mar 2025 289th ComradeSquirrel 490 339 14ms 10 hours ago 292nd TaserTheFox 🇺🇸 488 340 19ms 4 Apr 2023 293rd TheZwierzLF 🇵🇱 485 342 20ms 22 Nov 2025 294th P-Quentin 🇫🇷 484 343 16ms 9 Aug 2022 295th SirFireball3521 480 346 21ms 26 Jan 2023 295th wuduculfre 480 346 15ms 28 Jul 2025 297th idans320 478 347 16ms 31 Jul 2022 298th eshilo-draper 477 348 12ms 21 Oct 2022 298th Ythaenagor 477 348 12ms 5 Aug 2024 300th setop 474 350 15ms 19 Aug 2023 301st maggym00 473 351 18ms 14 Mar 2021 301st Wildst 473 351 15ms 23 Sep 2022 303rd glesnick 470 353 14ms 17 Aug 2022 304th mdnestor 469 354 24ms 3 Jan 2023 305th vgamula 🇺🇦 468 355 15ms 16 Jul 2025 306th usnheckler 465 357 28ms 8 Jun 2019 307th geofft 462 359 18ms 11 Dec 2020 307th mokymok 🇺🇸 462 359 20ms 3 Dec 2021 309th descentcare 461 360 16ms 8 Aug 2022 310th Jonson26 460 361 15ms 11 Feb 2026 311th kistlerf 🇨🇭 459 362 15ms 15 May 2025 312th jameswmccarty 457 363 23ms 11 Jul 2024 313th alangodfrey 455 365 19ms 18 Feb 2019 313th potato-jackson 455 365 22ms 5 Sep 2021 315th GulgDev 451 368 15ms 21 Mar 2023 316th hellwue 447 371 18ms 25 Jun 2024 317th ian-h-chamberlain 🇺🇸 443 375 31ms 5 Sep 2020 317th NanduBC 443 375 17ms 18 Mar 2021 319th tomh1012 440 377 17ms 28 Oct 2020 320th 0dyse 437 380 16ms 23 Apr 2025 First Prev 241–320 of 381 Next Last
