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 chars. 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 Chars Time Submitted 241st tnecio 450 262 10ms 29 Aug 2020 241st Indivicivet 450 262 10ms 26 Oct 2021 241st gchenfc 450 262 10ms 21 Jan 2022 241st LogicalJoe 450 262 9ms 26 Sep 2022 241st NDR0216 🇹🇼 450 262 10ms 12 Feb 2023 241st DrPrettyman 450 262 11ms 22 Dec 2025 247th rplnt 449 263 10ms 20 Apr 2020 247th Troon 449 263 10ms 14 Mar 2025 249th lrustand 447 264 10ms 5 Feb 2018 249th stefangimmillaro 447 264 10ms 20 Dec 2022 249th NOS4A5I 447 264 10ms 28 Dec 2022 249th rehoboth23 447 264 10ms 21 Dec 2023 249th khavik 447 264 17ms 18 May 2024 249th UwUcifer 447 264 10ms 5 Aug 2025 255th bernardgardner 445 265 10ms 13 Jun 2019 255th HerLovelyTentacles 445 265 31ms 7 Feb 2021 255th jfallon1997 445 265 11ms 15 Aug 2022 255th Bmrl7 445 265 9ms 17 Mar 2024 259th rowboat1 442 267 14ms 11 Aug 2018 259th asadullayev 442 267 9ms 1 Sep 2020 259th kacogg5 442 267 12ms 11 Jul 2022 259th fuzzylojik-golf 🇺🇸 442 267 16ms 21 May 2025 263rd mizuzimu 440 268 16ms 3 Feb 2020 263rd cubed-guy 440 268 11ms 21 Aug 2021 263rd wuduculfre 440 268 10ms 3 Aug 2025 266th Pargolo 439 269 10ms 9 May 2021 266th Vafdaf12 439 269 10ms 29 Aug 2023 266th WillConker 439 269 10ms 9 Mar 2024 266th OCNeve 439 269 11ms 17 Jun 2024 266th xdaniel-lim 439 269 10ms 24 Jan 2025 266th qpwoeirut 439 269 11ms 16 Aug 2025 272nd RDShah 437 270 11ms 12 Jun 2022 273rd xorraxrax 435 271 16ms 13 Oct 2019 273rd dim-an 435 271 11ms 8 Dec 2020 273rd 6440916 435 271 10ms 17 Oct 2024 273rd countlpaul-dotcom 435 271 10ms 19 Oct 2025 277th geofft 434 272 11ms 10 Dec 2020 277th ceeb9 434 272 10ms 8 Jun 2023 277th GeneralPoxter 434 272 10ms 7 Dec 2023 277th jasonho2582001 434 272 10ms 1 Jul 2024 277th jenuk 434 272 10ms 2 Dec 2025 282nd JanJSmejkal 432 273 18ms 25 Apr 2019 282nd darknoon 432 273 12ms 14 Jan 2020 282nd kops-cg 432 273 17ms 6 Apr 2021 282nd CaedenHarper 🇨🇦 432 273 10ms 18 Jan 2025 286th galloj 🇨🇿 431 274 18ms 28 Jan 2021 286th zbreit 🇺🇸 431 274 16ms 31 May 2021 286th zoemarschner 431 274 16ms 16 May 2022 286th blaykemac 431 274 9ms 28 Jul 2022 286th tobeannouncd 431 274 12ms 3 Jan 2024 291st alangodfrey 429 275 11ms 6 Feb 2019 291st martinnorling 🇸🇪 429 275 11ms 7 Mar 2022 291st RoscoeSmith 429 275 16ms 8 Sep 2022 291st ballaire 429 275 10ms 21 Jan 2024 291st Rubiksmath 429 275 15ms 13 Sep 2024 291st shininglegend 429 275 11ms 19 Jun 2025 297th cesarm4 428 276 31ms 12 Dec 2020 297th cros107 🇦🇺 428 276 11ms 3 Jun 2023 299th harrysouthall 426 277 10ms 28 Jul 2022 299th RyGuy101 426 277 10ms 21 Jul 2023 301st Deepztream 424 278 17ms 2 Sep 2018 301st Mojken 424 278 16ms 2 Sep 2018 301st lmolteno 424 278 10ms 7 Mar 2021 301st befoster 424 278 10ms 10 Apr 2021 301st ValentinCassayre 424 278 17ms 20 Oct 2022 301st CutSandstone 424 278 18ms 4 Jul 2024 301st Marsolo1 424 278 16ms 29 Sep 2024 308th maheshmurag 423 279 18ms 10 May 2020 308th HengGe3 423 279 11ms 9 May 2021 308th Phidet 423 279 31ms 26 Jun 2021 308th vishwathg 423 279 10ms 10 Aug 2022 308th masalawarrior 423 279 17ms 10 Jan 2023 308th fjd35 423 279 11ms 3 Jun 2023 308th aalec 423 279 17ms 10 May 2024 308th thomashendrix 423 279 10ms 11 Sep 2024 308th sciencedjinn 423 279 10ms 8 Nov 2024 317th SimonPeatman 421 280 17ms 29 Dec 2018 317th richard-oelze 🇩🇪 421 280 10ms 24 Dec 2020 317th Supermac30 421 280 11ms 29 Dec 2022 317th adamnielson42 🇺🇸 421 280 11ms 12 May 2023 First Prev 241–320 of 1,100 Next Last
