The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 3 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 639th PotatoSaladOverlord 359 329 10ms 13 Mar 2023 639th CorporalCrawdad 359 329 10ms 19 Aug 2024 643rd Icymice 358 330 10ms 16 Mar 2020 643rd twrogers1 358 330 10ms 12 Aug 2020 643rd SlicesOfficial 358 330 10ms 16 Oct 2021 643rd luca1339 358 330 11ms 24 May 2024 647th ejerrard 356 331 9ms 20 Jun 2020 647th LukasFolwarczny 🇨🇿 356 331 10ms 17 Sep 2022 647th wampixel 356 331 15ms 12 Nov 2022 650th DonCharlesLambert 355 332 17ms 21 Feb 2024 650th ioorik 355 332 10ms 6 Mar 2025 652nd david-wiles6 354 333 10ms 24 Jan 2020 652nd bastienvoirin 🇫🇷 354 333 9ms 28 Nov 2020 652nd dzybine 354 333 12ms 7 Mar 2022 652nd 2xback 354 333 10ms 3 Feb 2023 652nd midnattssol 🇸🇪 354 333 10ms 27 Jul 2023 652nd ABC00012345 354 333 11ms 21 Feb 2024 652nd TheZwierzLF 🇵🇱 354 333 10ms 22 Nov 2025 652nd omicron-4 354 333 10ms 31 Jan 2026 660th ciaranmag 353 334 10ms 25 Jan 2019 660th Malin001 353 334 11ms 3 Jan 2020 660th peterprescott 353 334 10ms 18 Nov 2021 660th piano-miles 353 334 10ms 8 Jan 2023 660th wa1ker38552 353 334 11ms 20 May 2023 660th arjunc12 353 334 9ms 28 Dec 2023 666th frogtd 352 335 18ms 23 Feb 2021 666th joonaspu 352 335 10ms 3 Jun 2023 666th xoxo-ily 352 335 10ms 12 Dec 2023 669th docd 351 336 9ms 7 Aug 2022 669th AbuzarN 351 336 10ms 22 Nov 2023 671st dahrens 350 337 11ms 4 Jul 2019 671st Darkrizen7 350 337 10ms 4 Apr 2020 671st MrFuzz32 350 337 10ms 9 Feb 2021 671st yourlefthandman 350 337 16ms 17 Aug 2023 675th oAsAo 349 338 11ms 21 Jan 2020 675th orifu 349 338 10ms 22 Feb 2021 675th OppositeShark 349 338 10ms 8 Apr 2022 675th shreyasminocha 349 338 10ms 20 Sep 2022 675th underscorelior 349 338 10ms 5 Nov 2022 675th lcubelongren 349 338 11ms 15 Feb 2024 675th jameswmccarty 349 338 10ms 2 Jan 2025 682nd danielwang5 348 339 17ms 1 Aug 2020 682nd wrhm 348 339 10ms 12 Dec 2020 682nd imtiendat0311 348 339 18ms 14 Apr 2022 682nd Lunik 348 339 10ms 7 Nov 2022 682nd TJK-S 348 339 10ms 4 Nov 2025 687th fynnkroeger 347 340 10ms 17 Mar 2021 687th nishusb 347 340 10ms 15 Jun 2021 687th vuxlee584 🇻🇳 347 340 10ms 15 Aug 2022 687th WillowBee7 347 340 10ms 1 Jun 2023 687th seejaecee 347 340 9ms 7 Feb 2025 687th HunterC14 347 340 11ms 17 Nov 2025 693rd PFischbeck 346 341 10ms 20 Dec 2017 693rd TheYMI 346 341 9ms 19 May 2020 693rd Bananapants22 346 341 9ms 4 Aug 2022 693rd jiji7879 346 341 10ms 20 Jun 2025 697th maxumusprime 345 342 12ms 18 Feb 2020 697th GreenyNeko 345 342 10ms 24 Jul 2020 697th foskaos 345 342 10ms 29 Oct 2023 697th ComputerKWasTaken 🇺🇸 345 342 10ms 9 Jun 2024 697th arjunarya1 345 342 9ms 28 Aug 2025 702nd bretthat0 344 343 12ms 28 Dec 2018 702nd aazuspan 344 343 10ms 14 May 2022 702nd KingSkyrock 🇺🇸 344 343 11ms 5 Nov 2022 702nd DrKristoff 344 343 9ms 27 Aug 2024 706th Ibozz91 343 344 10ms 8 Jun 2025 707th tcoard 342 345 10ms 21 Feb 2018 707th aposteriorist 🇨🇦 342 345 9ms 15 Feb 2022 707th Natz12 342 345 10ms 20 Jan 2023 707th peternordby 342 345 10ms 23 Nov 2023 707th Pale-Vessel 342 345 10ms 10 Jan 2024 707th RucatJ 342 345 10ms 17 Apr 2025 713th skibur 341 346 10ms 11 Oct 2019 713th sech1p 🇵🇱 341 346 16ms 4 Jul 2021 713th venividovici 341 346 11ms 17 Nov 2021 713th cameronezell 341 346 11ms 30 May 2022 713th smartiel 341 346 10ms 14 Sep 2022 713th S3BzA 341 346 10ms 30 Aug 2023 719th hymanimy 340 347 17ms 22 Nov 2021 719th DABANANAMAN120 340 347 12ms 2 Aug 2025 First Prev 641–720 of 1,103 Next Last
