The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 5 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 397th mbittner20 401 294 11ms 28 Feb 2023 397th ross-i 401 294 10ms 5 Jul 2023 397th mar-moraes 401 294 10ms 13 Dec 2023 397th theadamabrams 401 294 10ms 1 Jan 2024 397th BREMAUCY 🇫🇷 401 294 17ms 27 Mar 2024 397th willow-iam 401 294 10ms 10 Jul 2024 397th edsrzf 🇳🇿 401 294 11ms 28 Sep 2024 397th tpolster 401 294 30ms 9 Oct 2024 409th Vaekor 400 295 9ms 18 Nov 2020 409th argusdusty 🇺🇸 400 295 10ms 26 Dec 2020 409th inverseLorentz 🇦🇺 400 295 11ms 6 Jun 2022 409th andre-de-lorde 400 295 10ms 1 Sep 2022 409th suhasdara 400 295 10ms 29 Oct 2022 409th eiburns 400 295 10ms 21 Jan 2023 409th MiranDaniel 🇨🇿 400 295 17ms 1 May 2023 409th lillian314159 400 295 10ms 13 Jul 2023 409th Andrey135296 400 295 10ms 26 Sep 2023 409th nhausspiegel 400 295 17ms 25 Oct 2023 409th blueCormorant 400 295 9ms 26 May 2024 409th sacredeux 400 295 10ms 2 Aug 2024 409th Malizma333 400 295 10ms 17 Oct 2024 409th ridingqwerty 🇺🇸 400 295 16ms 17 Mar 2025 409th SectorCorruptor 400 295 16ms 25 Jul 2025 409th Hyperoplex145 400 295 11ms 10 Nov 2025 425th drew-loukusa 399 296 11ms 27 May 2020 425th CodyMiner 399 296 29ms 17 Nov 2021 425th Will-Howard 399 296 10ms 19 Dec 2021 425th The3gs 399 296 10ms 5 Jan 2022 425th ThijsLuttikhuis 399 296 10ms 4 Mar 2024 425th GeneralFabian 399 296 12ms 14 Dec 2024 425th RobGLambert 399 296 10ms 7 Jun 2025 425th RodAlc24 🇪🇸 399 296 10ms 26 days ago 433rd jotslo 🇬🇧 397 297 12ms 14 Jul 2019 433rd b4dpxl 397 297 9ms 14 Nov 2019 433rd lamba09 397 297 16ms 20 Aug 2020 433rd petroselo 397 297 11ms 9 Apr 2022 433rd jm600 397 297 10ms 14 Apr 2022 433rd nstearns96 🇬🇧 397 297 10ms 10 Dec 2022 433rd Edjyzod 397 297 10ms 7 Mar 2023 433rd taesungh 397 297 10ms 15 Oct 2023 433rd askipio 397 297 9ms 22 Nov 2023 433rd j3mak 397 297 10ms 16 Jan 2024 433rd Mathrew2012 397 297 10ms 30 Aug 2024 433rd damoose717 397 297 16ms 23 May 2025 445th sombreWeb 396 298 11ms 5 Nov 2020 445th chbea1 396 298 17ms 30 Mar 2021 445th asheeri 396 298 10ms 15 Aug 2021 445th qwjhvbxi 396 298 10ms 5 Feb 2024 445th estrawitch 396 298 10ms 9 days ago 450th surbainczyk 395 299 10ms 20 Jul 2022 450th oneWaveAdrian 🇩🇪 395 299 10ms 14 Oct 2022 450th PaulMWeiser 395 299 11ms 14 Feb 2023 450th fenix-bear 395 299 10ms 3 Jul 2023 450th DavidVadnais 395 299 10ms 15 Feb 2024 450th Pyroan 395 299 11ms 19 Apr 2025 456th leny-mi 393 300 10ms 27 Jul 2020 456th gardarjuto 393 300 11ms 16 Nov 2020 456th mrmena 🇦🇺 393 300 10ms 27 May 2021 456th eoinfennessy 393 300 10ms 23 Jul 2021 456th jwfiredragon 393 300 11ms 15 May 2025 456th maxficco 393 300 11ms 27 Sep 2025 462nd SniperSmiley 🇺🇸 392 301 11ms 1 Jul 2021 462nd ramsay 392 301 10ms 8 Aug 2022 462nd alexhroom 392 301 9ms 1 Sep 2022 462nd Dundunbra 🇳🇴 392 301 9ms 18 Sep 2022 466th HassanAliKadhem 🇧🇭 391 302 17ms 5 Jan 2022 466th PhysicDev 🇫🇷 391 302 11ms 5 Sep 2022 466th za3k 391 302 9ms 8 Oct 2022 466th en4rab 391 302 9ms 7 May 2023 466th fbe 391 302 10ms 18 May 2023 471st starsandspirals 389 303 13ms 9 Jul 2020 471st goldstraw 389 303 10ms 30 Nov 2021 471st thiccaxe 389 303 10ms 2 Oct 2022 471st tails618 389 303 10ms 10 Sep 2023 471st resoNathan 389 303 10ms 8 Jul 2024 471st NoneTheFewer 389 303 10ms 5 Jan 2026 477th adesanjo 388 304 11ms 16 Jun 2018 477th JackM25 388 304 17ms 28 Sep 2020 477th MurrayHS 388 304 17ms 28 Sep 2020 477th hidude562 388 304 10ms 19 Oct 2022 First Prev 401–480 of 1,102 Next Last
