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 79th pxeger 🇬🇧 877 235 18ms 18 Mar 2022 82nd raspofabs 873 236 10ms 15 Jul 2024 83rd FlorianCassayre 🇫🇷 869 237 10ms 28 Oct 2022 83rd mikehanus 869 237 10ms 20 Nov 2023 83rd Anonymousellama21 869 237 9ms 6 Mar 2024 83rd Johnor12 869 237 10ms 4 Jun 2024 83rd fourth-bit 869 237 10ms 27 Jul 2024 83rd yanjs 869 237 17ms 3 Jul 2025 89th Irratix 🇳🇱 866 238 11ms 28 Apr 2022 89th neel11235813 866 238 16ms 8 Jan 2023 89th RYNO8 866 238 11ms 22 Aug 2023 89th ndren 866 238 17ms 30 Jan 2024 89th FranklinJiaChen 866 238 17ms 14 Jun 2024 89th Baroniket 866 238 17ms 13 Aug 2025 95th yzhs 🇩🇪 862 239 9ms 8 Feb 2020 95th jakobkordez 🇸🇮 862 239 10ms 30 Nov 2022 95th KatieLG 🇬🇧 862 239 10ms 9 Jan 2026 98th nullie 858 240 17ms 20 Jan 2021 98th kyleclaassen 858 240 10ms 12 Mar 2022 100th stertooy 🇧🇪 855 241 10ms 13 Jun 2024 100th moustave 855 241 10ms 30 Oct 2024 100th DrakeSeteraO 855 241 11ms 12 Nov 2025 103rd benson-z 851 242 11ms 3 Dec 2024 104th Crambor 848 243 10ms 9 Jan 2020 104th knutae 🇳🇴 848 243 10ms 29 Nov 2021 106th daedals 844 244 11ms 25 Apr 2019 106th dzhang314 844 244 10ms 11 Aug 2019 106th pique0822 844 244 11ms 1 Jul 2021 106th TimHuisman1703 844 244 9ms 7 Jan 2022 106th ZoeyKD 844 244 17ms 13 May 2023 106th Glinte 844 244 17ms 15 Dec 2023 106th l-donovan 844 244 10ms 18 Jan 2024 106th zhaohm14 844 244 10ms 6 Jan 2026 114th Kloppermand 🇩🇰 841 245 10ms 9 Aug 2021 114th amollberg 🇸🇪 841 245 10ms 5 Jan 2022 114th logvp 841 245 10ms 11 Jan 2024 117th kevinmchung 837 246 10ms 26 Feb 2018 117th jakubtomany 837 246 9ms 20 Apr 2020 117th urojony 🇵🇱 837 246 10ms 28 Dec 2020 117th Powerroff 837 246 12ms 18 Jan 2025 121st jacklynnepenick 834 247 10ms 20 Aug 2021 121st sultan 834 247 11ms 13 Jun 2022 121st lucasvazq 🇦🇷 834 247 15ms 7 Dec 2022 121st yishayv 834 247 16ms 18 Jan 2023 121st JorgiEagle 834 247 10ms 8 Feb 2024 121st Artemis21 🇬🇧 834 247 17ms 1 Jan 2025 121st davecame 834 247 17ms 2 Oct 2025 128th mediocr3 831 248 10ms 11 Aug 2023 128th greentruff 831 248 16ms 7 Dec 2025 128th CommandLeo 🇮🇹 831 248 15ms 26 Dec 2025 131st suchir 827 249 10ms 5 Jun 2021 131st bbakersmith 827 249 9ms 19 Jul 2021 131st Fracture17 827 249 10ms 2 Apr 2023 131st keelimeguy 🇺🇸 827 249 10ms 5 Nov 2023 131st pfaion 🇩🇪 827 249 9ms 3 Mar 2024 131st SB-945 827 249 10ms 17 Apr 2024 131st andrewjc2000 827 249 10ms 14 Jul 2025 131st erikji 827 249 9ms 28 Jul 2025 131st YAJUE114514 827 249 9ms 10 Dec 2025 140th ZakkkkAttackkkk 🇵🇭 824 250 16ms 30 Dec 2021 140th SomeKitten 🇺🇸 824 250 10ms 5 Jul 2025 142nd tobyLovick 817 252 10ms 7 Dec 2023 142nd JunkIce 817 252 17ms 5 Mar 2025 142nd GodlyProgrammer1 817 252 18ms 22 Nov 2025 145th akhil99 814 253 10ms 14 May 2020 145th BenBanerjeeRichards 814 253 10ms 6 Nov 2021 145th guilhem-roy 🇫🇷 814 253 9ms 23 Feb 2022 145th fgrosshans 🇫🇷 814 253 11ms 5 May 2023 145th cefqrn 814 253 11ms 15 May 2023 150th SaagarGodithi 811 254 10ms 10 May 2020 150th kenny14231 811 254 12ms 17 Aug 2022 150th jhpaques 🇫🇷 811 254 11ms 30 Nov 2022 150th rollershutter 811 254 11ms 5 May 2024 150th solisolu 811 254 11ms 17 Oct 2025 155th Vdubro 808 255 10ms 6 Jun 2022 155th ZorblaxV 808 255 10ms 19 Jan 2025 155th LuisGoncalves05 🇵🇹 808 255 11ms 17 Jul 2025 155th AstroOrbis 808 255 17ms 23 Jul 2025 159th FomichevAK106 805 256 9ms 29 Sep 2024 160th Ailko 🇧🇪 802 257 16ms 17 Jan 2025 First Prev 81–160 of 1,100 Next Last