The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 6 days. Why not try and solve them ahead of time?
99 Bottles of Beer 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 239th RoscoeSmith 749 275 16ms 8 Sep 2022 239th ballaire 749 275 10ms 21 Jan 2024 239th Rubiksmath 749 275 15ms 13 Sep 2024 239th shininglegend 749 275 11ms 19 Jun 2025 245th cesarm4 746 276 31ms 12 Dec 2020 245th cros107 🇦🇺 746 276 11ms 3 Jun 2023 247th harrysouthall 744 277 10ms 28 Jul 2022 247th P-Quentin 🇫🇷 744 277 10ms 3 Aug 2022 247th RyGuy101 744 277 10ms 21 Jul 2023 247th RaBa21 🇭🇺 744 277 10ms 1 Aug 2025 247th luuumine 🇫🇷 744 277 16ms 7 Oct 2025 247th Babafaba 744 277 10ms 3 Nov 2025 253rd Deepztream 741 278 17ms 2 Sep 2018 253rd Mojken 741 278 16ms 2 Sep 2018 253rd lmolteno 741 278 10ms 7 Mar 2021 253rd befoster 741 278 10ms 10 Apr 2021 253rd ValentinCassayre 741 278 17ms 20 Oct 2022 253rd CutSandstone 741 278 18ms 4 Jul 2024 253rd bob-th 741 278 10ms 26 Jul 2024 253rd Marsolo1 741 278 16ms 29 Sep 2024 261st maheshmurag 738 279 18ms 10 May 2020 261st HengGe3 738 279 11ms 9 May 2021 261st Phidet 738 279 31ms 26 Jun 2021 261st vishwathg 738 279 10ms 10 Aug 2022 261st masalawarrior 738 279 17ms 10 Jan 2023 261st fjd35 738 279 11ms 3 Jun 2023 261st aalec 738 279 17ms 10 May 2024 261st thomashendrix 738 279 10ms 11 Sep 2024 261st sciencedjinn 738 279 10ms 8 Nov 2024 270th SimonPeatman 736 280 17ms 29 Dec 2018 270th richard-oelze 🇩🇪 736 280 10ms 24 Dec 2020 270th keegan-t 🇨🇦 736 280 10ms 19 Sep 2021 270th Supermac30 736 280 11ms 29 Dec 2022 270th adamnielson42 🇺🇸 736 280 11ms 12 May 2023 270th JudeTyrrell 736 280 10ms 5 Oct 2024 270th croc54 736 280 16ms 22 Dec 2024 270th Coolbeansyeah 736 280 11ms 18 Feb 2026 278th SpeedyNinja 733 281 17ms 20 Oct 2020 278th itsbjoern 733 281 10ms 11 Dec 2020 278th SimonSieber 733 281 17ms 25 Nov 2022 278th 5quiwyrm 733 281 18ms 12 Nov 2024 278th smilesformiles3 733 281 10ms 11 Jun 2025 278th davidludwik2370 733 281 18ms 17 days ago 284th myfatemi04 730 282 10ms 11 Jan 2018 284th bkshrader 730 282 16ms 11 Jan 2019 284th buffalocat 730 282 10ms 3 May 2021 284th celiendonze 🇨🇭 730 282 10ms 22 Jun 2023 284th msbranicky 730 282 17ms 25 Jul 2023 284th AbhilashaTandon 730 282 10ms 21 Sep 2023 284th curohu 🇺🇸 730 282 10ms 13 Oct 2024 291st dymowski 728 283 11ms 12 Jul 2019 291st clementblaudeau 728 283 17ms 1 Jun 2021 291st hiichbindermax 728 283 10ms 25 Feb 2022 291st Xzyaihni 728 283 17ms 16 Jan 2024 291st codingisgreatbutiamnot 728 283 9ms 14 Jul 2024 291st OSYCh314 🇦🇺 728 283 10ms 21 Nov 2024 291st p214974_edj 728 283 10ms 17 Sep 2025 298th tzlils 725 284 10ms 25 Mar 2023 298th quimey 725 284 10ms 21 Jul 2023 298th VictorStenvers 🇳🇱 725 284 10ms 2 Oct 2024 298th xiaoyiming123 725 284 10ms 13 Aug 2025 298th robin-scragg 725 284 10ms 20 Sep 2025 303rd mmniaziqb 723 285 17ms 15 May 2018 303rd 77Tigers 723 285 16ms 7 Feb 2021 303rd CedricGebistorf 723 285 10ms 11 Mar 2022 303rd QuincyNash 🇺🇸 723 285 10ms 29 Nov 2022 303rd AlexanderFair 723 285 10ms 20 Jul 2023 303rd Terobero 723 285 17ms 2 Sep 2024 303rd kbeat 🇰🇿 723 285 10ms 18 May 2025 303rd Luke44565 723 285 16ms 25 Jun 2025 303rd wobblybits 723 285 10ms 16 Aug 2025 312th sawall 720 286 17ms 17 Aug 2019 312th JackGiffordRA 720 286 10ms 12 Jun 2020 312th Dazza314 🇬🇧 720 286 10ms 1 Nov 2020 312th Poarthan 720 286 11ms 6 Mar 2022 312th dtaylor0 720 286 17ms 25 Dec 2022 312th bobbysq 720 286 9ms 2 May 2023 312th RobertHoeh 720 286 16ms 5 Dec 2023 312th yousefalizadeh 720 286 9ms 3 Apr 2024 312th elgan65536 🇺🇸 720 286 10ms 16 Apr 2024 First Prev 241–320 of 1,100 Next Last