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?
Foo Fizz Buzz Bar 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 480th Elliott-R-Shaw 847 98 11ms 2 Feb 2023 480th zalazalaza 847 98 11ms 2 Feb 2023 480th ehulinsky 🇺🇸 847 98 11ms 16 May 2023 480th ridingqwerty 🇺🇸 847 98 12ms 29 Nov 2023 480th qwjhvbxi 847 98 12ms 7 Feb 2024 480th dtbao20 🇻🇳 847 98 11ms 30 Sep 2024 480th NotNoper 847 98 11ms 24 Oct 2024 480th Europe2048 847 98 12ms 2 Dec 2024 489th vale075 838 99 12ms 1 May 2022 489th PkmnQ 838 99 48ms 25 Jul 2022 489th TheoKeller1 838 99 11ms 5 Jun 2023 489th jgh713 838 99 10ms 7 Sep 2023 489th KadinSchultz 838 99 11ms 8 Jan 2024 489th knyghty 838 99 11ms 17 Feb 2024 489th jbjd 838 99 11ms 24 Feb 2024 489th pquline 838 99 11ms 5 Mar 2025 489th jiji7879 838 99 11ms 20 Jun 2025 498th Alfiecxn 🇬🇧 830 100 11ms 7 May 2022 498th dcc5480 830 100 12ms 12 Jan 2023 498th taesungh 830 100 11ms 16 Oct 2023 498th tobyLovick 830 100 11ms 17 Nov 2023 498th hhjellup 830 100 11ms 21 Jul 2025 503rd rowboat1 822 101 48ms 19 Jun 2022 503rd Heathcorp 🇦🇺 822 101 11ms 28 Jul 2022 503rd Andre3582 822 101 11ms 31 Oct 2022 503rd brimstonetrader 822 101 11ms 18 Dec 2023 503rd Bmrl7 822 101 12ms 24 Feb 2024 503rd inverseLorentz 🇦🇺 822 101 12ms 11 Mar 2024 503rd madeforlosers 822 101 12ms 5 Sep 2024 503rd yokasuretsu 822 101 12ms 13 Jan 2025 503rd PKFire18 822 101 11ms 25 Jun 2025 512th michelebastione 🇮🇹 814 102 13ms 21 Nov 2021 512th georgehulme 814 102 42ms 26 Jan 2022 512th pedrocoelhosilva 814 102 11ms 4 Nov 2022 512th OwPowell 814 102 11ms 17 Dec 2023 516th bsoyka 🇺🇸 806 103 11ms 9 Jan 2022 516th hvdnsz 806 103 11ms 9 May 2022 516th james-downey 806 103 10ms 10 Jul 2022 516th Bodo171 806 103 11ms 27 Nov 2022 516th shersch 806 103 11ms 20 Jan 2023 516th Lwi-Sandwich 806 103 12ms 20 Jul 2023 516th feherd 806 103 11ms 16 Nov 2023 516th Isaac-Metthez 806 103 11ms 19 Dec 2023 524th cubed-guy 798 104 12ms 13 Feb 2022 524th argusdusty 🇺🇸 798 104 48ms 21 Aug 2022 524th commandz0 🇺🇸 798 104 12ms 31 Aug 2022 524th n0Oo0Oo0b 798 104 13ms 29 Dec 2022 524th Razzula 798 104 12ms 4 Oct 2023 524th logvp 798 104 13ms 15 Jan 2024 530th jiaminglimjm 🇲🇾 790 105 12ms 25 Mar 2023 530th dlutolf 790 105 11ms 30 Apr 2023 530th SodiumFluoride 790 105 12ms 14 Sep 2024 530th staniec 790 105 59ms 5 Dec 2024 534th mdnestor 783 106 12ms 23 Dec 2022 534th redhann 783 106 11ms 1 Apr 2023 534th Peanut-XIV 783 106 11ms 9 Apr 2023 534th mbittner20 783 106 11ms 27 May 2023 534th AbhilashaTandon 783 106 12ms 21 Sep 2023 534th levavft 783 106 12ms 26 Oct 2023 534th julian-hoelz 783 106 10ms 19 Sep 2024 534th damoose717 783 106 11ms 23 May 2025 542nd Higashida-Daisuke 776 107 11ms 19 Dec 2021 542nd pol-7 776 107 12ms 6 Mar 2025 542nd tknight-dev 776 107 12ms 30 Jul 2025 542nd zgialor-lab 776 107 12ms 17 days ago 546th Kasci 761 109 40ms 6 Dec 2021 546th aazuspan 761 109 12ms 27 Dec 2021 546th vigneshhari 761 109 18ms 18 Jan 2022 546th quasar098 761 109 12ms 16 Mar 2022 546th hippopotam00sehead 🇨🇦 761 109 11ms 11 Sep 2024 546th lgoeldner 761 109 10ms 15 Jan 2025 552nd TheSmilingTurtle 755 110 11ms 14 May 2022 552nd randomn4me 755 110 58ms 7 Oct 2022 552nd rachitkeyal 755 110 11ms 9 Nov 2022 552nd BlakeBleem 755 110 11ms 21 Apr 2023 552nd anonymaew 755 110 12ms 2 Aug 2023 552nd MisterrLuck 755 110 10ms 3 Sep 2023 552nd cloudberry-DeaDev 755 110 12ms 19 Dec 2023 552nd gracetyy 🇭🇰 755 110 9ms 2 Jul 2024 552nd ebeinroth 755 110 10ms 6 Aug 2024 First Prev 481–560 of 879 Next Last
