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?
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 161st Ailko 🇧🇪 802 257 16ms 17 Jan 2025 161st fkantelberg 802 257 10ms 15 Jul 2025 163rd ageneric 798 258 10ms 22 Jul 2023 163rd EnTerr 798 258 16ms 26 Jun 2024 165th msrawson 795 259 10ms 10 Aug 2018 165th Sakaala 795 259 10ms 24 Apr 2019 165th tomh1012 795 259 11ms 7 Jan 2021 165th NicoAdams 795 259 10ms 30 Dec 2021 165th OllieBoyne 🇬🇧 795 259 10ms 29 Apr 2022 165th Andrey2001 795 259 10ms 1 Feb 2026 171st abailey2020 🇺🇸 792 260 10ms 13 Dec 2020 171st InigoK 🇺🇸 792 260 10ms 26 Sep 2025 171st Matter1024 🇮🇳 792 260 10ms 14 Feb 2026 174th thisishowmymindworks 🇳🇴 789 261 17ms 5 Oct 2020 174th Bonjour27891 🇻🇳 789 261 17ms 13 Mar 2022 174th MaxElf999 789 261 11ms 28 Sep 2022 174th TaserTheFox 🇺🇸 789 261 17ms 27 Apr 2023 174th Deppyforce 789 261 16ms 14 days ago 179th tnecio 786 262 10ms 29 Aug 2020 179th Indivicivet 786 262 10ms 26 Oct 2021 179th gchenfc 786 262 10ms 21 Jan 2022 179th LogicalJoe 786 262 9ms 26 Sep 2022 179th NDR0216 🇹🇼 786 262 10ms 12 Feb 2023 179th DrPrettyman 786 262 11ms 22 Dec 2025 185th rplnt 783 263 10ms 20 Apr 2020 185th Koshu 783 263 10ms 2 Dec 2023 185th Troon 783 263 10ms 14 Mar 2025 188th lrustand 780 264 10ms 5 Feb 2018 188th stefangimmillaro 780 264 10ms 20 Dec 2022 188th NOS4A5I 780 264 10ms 28 Dec 2022 188th rehoboth23 780 264 10ms 21 Dec 2023 188th khavik 780 264 17ms 18 May 2024 188th UwUcifer 780 264 10ms 5 Aug 2025 194th bernardgardner 777 265 10ms 13 Jun 2019 194th HerLovelyTentacles 777 265 31ms 7 Feb 2021 194th jfallon1997 777 265 11ms 15 Aug 2022 194th Bmrl7 777 265 9ms 17 Mar 2024 194th ASampsonMu31 777 265 10ms 15 days ago 199th rowboat1 772 267 14ms 11 Aug 2018 199th asadullayev 772 267 9ms 1 Sep 2020 199th kacogg5 772 267 12ms 11 Jul 2022 199th Mabeloid 🇳🇴 772 267 10ms 23 Sep 2024 199th xyangst 772 267 11ms 3 Oct 2024 199th fuzzylojik-golf 🇺🇸 772 267 16ms 21 May 2025 205th mizuzimu 769 268 16ms 3 Feb 2020 205th cubed-guy 769 268 11ms 21 Aug 2021 205th wuduculfre 769 268 10ms 3 Aug 2025 208th Pargolo 766 269 10ms 9 May 2021 208th Vafdaf12 766 269 10ms 29 Aug 2023 208th WillConker 766 269 10ms 9 Mar 2024 208th OCNeve 766 269 11ms 17 Jun 2024 208th xdaniel-lim 766 269 10ms 24 Jan 2025 208th qpwoeirut 766 269 11ms 16 Aug 2025 208th Aquateraneal 🇺🇸 766 269 11ms 5 days ago 215th RDShah 763 270 11ms 12 Jun 2022 216th xorraxrax 760 271 16ms 13 Oct 2019 216th dim-an 760 271 11ms 8 Dec 2020 216th CarsonChr 🇺🇸 760 271 10ms 17 Sep 2022 216th jeff-at-tamer-dot-codes 🇺🇸 760 271 10ms 31 May 2023 216th tri1212 🇻🇳 760 271 11ms 3 Jun 2024 216th 6440916 760 271 10ms 17 Oct 2024 216th countlpaul-dotcom 760 271 10ms 19 Oct 2025 223rd geofft 757 272 11ms 10 Dec 2020 223rd ItsMeNoobieboy 757 272 17ms 22 Dec 2022 223rd ceeb9 757 272 10ms 8 Jun 2023 223rd GeneralPoxter 757 272 10ms 7 Dec 2023 223rd jasonho2582001 757 272 10ms 1 Jul 2024 223rd DoubleUynn 757 272 10ms 19 Jun 2025 223rd jenuk 757 272 10ms 2 Dec 2025 230th JanJSmejkal 755 273 18ms 25 Apr 2019 230th darknoon 755 273 12ms 14 Jan 2020 230th kops-cg 755 273 17ms 6 Apr 2021 230th zach333 755 273 11ms 15 Jul 2024 230th CaedenHarper 🇨🇦 755 273 10ms 18 Jan 2025 235th galloj 🇨🇿 752 274 18ms 28 Jan 2021 235th zbreit 🇺🇸 752 274 16ms 31 May 2021 235th zoemarschner 752 274 16ms 16 May 2022 235th blaykemac 752 274 9ms 28 Jul 2022 235th tobeannouncd 752 274 12ms 3 Jan 2024 240th alangodfrey 749 275 11ms 6 Feb 2019 First Prev 161–240 of 1,102 Next Last