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 721st Joashhh 597 139 11ms 1 Sep 2023 722nd Lemonz-13223 593 140 11ms 12 May 2022 722nd StoverGitHub 593 140 11ms 15 Jun 2022 722nd NerdyMcNerd42 593 140 11ms 13 Aug 2022 722nd Rythoka 593 140 11ms 17 Oct 2022 722nd SkydivingSquid 593 140 10ms 29 Nov 2022 722nd Pyro569 593 140 12ms 4 Jul 2023 722nd tknight00 593 140 15ms 5 Mar 2024 729th confy 589 141 11ms 28 Dec 2021 729th doppelar0n 🇩🇪 589 141 12ms 2 Oct 2022 729th desecaw13 589 141 11ms 24 Jan 2025 732nd estomagordo 🇳🇱 585 142 12ms 9 Dec 2021 732nd Armangharleghi1999 585 142 12ms 25 May 2022 732nd roylucas 585 142 11ms 18 Jan 2023 732nd sciencedjinn 585 142 11ms 8 Nov 2024 736th 201170 580 143 12ms 22 Aug 2022 736th Darknova2468 580 143 12ms 20 Nov 2022 736th N25CT13 580 143 12ms 20 Nov 2022 736th willdaspit 580 143 12ms 7 Aug 2023 740th arinhyther 576 144 12ms 19 Jan 2023 740th hidude562 576 144 11ms 1 Jul 2023 740th ggmartin32 576 144 12ms 18 May 2024 743rd jamespeilunli 572 145 18ms 20 Mar 2022 743rd SaberSwordBoy 572 145 11ms 23 Apr 2022 743rd PeterDekkers 572 145 12ms 7 Aug 2022 743rd JackieAlacrity2373 572 145 12ms 12 Feb 2025 743rd katss2 572 145 11ms 17 Aug 2025 748th Ole-Magnus-Hoi 568 146 11ms 12 Sep 2023 748th therealnumbers 568 146 11ms 17 Nov 2023 748th Neon-MT 568 146 12ms 18 Sep 2025 751st blankschyn 565 147 11ms 28 Dec 2021 751st Anthony-Williams-06 565 147 12ms 15 Nov 2022 751st enbyte 565 147 11ms 1 May 2023 751st quarl 565 147 12ms 12 Nov 2024 755th infinityTheorist 561 148 11ms 28 Jan 2024 756th CubingBadWolf 557 149 18ms 27 Feb 2022 756th Sharrrkkk 557 149 12ms 20 Jul 2025 758th ztaggart 553 150 11ms 5 Jan 2022 758th reni-hristova 553 150 11ms 28 Jan 2022 758th drewhead118 553 150 11ms 29 May 2022 758th DrPrettyman 553 150 11ms 23 Oct 2023 758th therandompersonn 553 150 10ms 28 Sep 2024 758th gelvetica 553 150 12ms 17 Nov 2024 764th BrysonHamlin 🇺🇸 550 151 12ms 2 Feb 2022 764th borosilicate 550 151 23ms 7 Apr 2022 764th HaiPaul 550 151 11ms 4 Mar 2024 767th rohith-kola 546 152 11ms 4 Oct 2024 768th Brain-Boy-53 539 154 11ms 17 Jun 2024 769th remijn 532 156 11ms 21 Mar 2023 769th dscarulla 532 156 11ms 11 Oct 2023 771st Sturla22 529 157 17ms 1 Apr 2022 771st haettead 529 157 10ms 19 Sep 2024 773rd wvansolk 522 159 11ms 4 Oct 2023 773rd joshua-el-samalouti 🇩🇪 522 159 11ms 26 May 2024 773rd theonetruenerd 522 159 11ms 15 Aug 2024 776th RasmusBV 519 160 12ms 9 May 2022 776th pharmony01 519 160 11ms 24 Sep 2022 778th CllsPy 516 161 11ms 7 May 2024 779th katharine67 512 162 12ms 8 Oct 2022 780th zt14427 509 163 13ms 28 Feb 2023 780th kellantech 509 163 93ms 18 Jun 2023 780th Gusic06 509 163 18ms 13 Mar 2024 783rd M053b 506 164 11ms 12 Sep 2022 783rd brendantuckerman 506 164 11ms 19 Oct 2022 783rd jmmographer 506 164 11ms 20 Oct 2023 786th contrick64 503 165 11ms 29 Mar 2024 787th pecholsjones 500 166 11ms 8 Dec 2021 787th Tagfox 500 166 11ms 16 Jul 2022 789th Bit125 497 167 12ms 28 Mar 2024 790th josephabbey 494 168 17ms 6 Apr 2022 791st joeybranch 491 169 12ms 11 May 2024 792nd Mr-McChicken 488 170 13ms 4 Oct 2025 793rd Ayushft 480 173 11ms 7 Dec 2021 793rd Crabbex 480 173 11ms 14 Aug 2025 793rd NoneTheFewer 480 173 11ms 25 Dec 2025 796th tterem 477 174 13ms 7 Jun 2022 797th Great-Gamer 474 175 12ms 24 Feb 2022 797th tmanternach 474 175 11ms 22 Nov 2022 799th a-penton 472 176 12ms 22 Sep 2022 799th LookAgain2 472 176 11ms 20 Dec 2022 First Prev 721–800 of 879 Next Last
