The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 3 hours. Why not try and solve them ahead of time?
12 Days of Christmas 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 149th PotatoSaladOverlord 886 466 9ms 19 Jan 2024 149th smilesformiles3 886 466 10ms 11 Jun 2025 149th Aphadion 886 466 10ms 19 Feb 2026 164th TheAristos 884 467 10ms 25 Oct 2019 164th reedwilemon 884 467 9ms 12 Jun 2020 164th georgehulme 884 467 10ms 26 Jan 2022 164th SniperSmiley 🇺🇸 884 467 11ms 5 Dec 2022 164th nstearns96 🇬🇧 884 467 9ms 13 Jan 2023 164th isorlab49 884 467 10ms 24 May 2023 164th yzhs 🇩🇪 884 467 9ms 23 Jun 2023 164th LocNgu 884 467 9ms 13 Jul 2023 164th CorporalCrawdad 884 467 10ms 5 Sep 2024 164th andrewjc2000 884 467 10ms 25 Feb 2025 164th qpwoeirut 884 467 10ms 2 Oct 2025 164th jet689 884 467 10ms 3 Jan 2026 176th xorraxrax 882 468 10ms 31 Oct 2019 176th Crambor 882 468 9ms 9 Jan 2020 176th vort3 882 468 10ms 1 May 2020 176th urojony 🇵🇱 882 468 10ms 4 Jan 2021 176th NanduBC 882 468 10ms 14 Mar 2021 176th osmith93 882 468 10ms 31 Jul 2021 176th face0xff 882 468 10ms 28 Dec 2021 176th joshmoody24 882 468 10ms 4 Mar 2022 176th pascscha 882 468 10ms 9 May 2022 176th MaxElf999 882 468 10ms 29 Sep 2022 176th fredrik-bakke 🇳🇴 882 468 30ms 5 Oct 2022 176th za3k 882 468 10ms 12 Oct 2022 176th Troon 882 468 9ms 25 Oct 2022 176th commandz0 🇺🇸 882 468 10ms 21 Nov 2022 176th mathb0y512 882 468 10ms 20 Jan 2023 176th eddvrs 882 468 10ms 22 Dec 2023 176th JorgiEagle 882 468 10ms 8 Feb 2024 176th SB-945 882 468 10ms 17 Apr 2024 176th EnTerr 882 468 10ms 8 Sep 2024 176th lhulinsky 882 468 10ms 31 Oct 2024 176th dokutan 882 468 9ms 20 Apr 2025 176th jtyliu 882 468 9ms 6 Aug 2025 198th sisyphus-ppcg 🇦🇺 881 469 10ms 11 Nov 2020 198th argusdusty 🇺🇸 881 469 9ms 25 Dec 2020 198th jacklynnepenick 881 469 10ms 10 Aug 2021 198th Thestralos 881 469 10ms 24 Feb 2023 198th quimey 881 469 10ms 23 Mar 2023 198th keegan-t 🇨🇦 881 469 10ms 20 Sep 2023 198th Entropite 881 469 10ms 20 Aug 2024 198th croc54 881 469 9ms 13 Dec 2024 198th Pyroan 881 469 9ms 22 Feb 2025 198th now4est 🇯🇵 881 469 10ms 24 Sep 2025 198th dvckyduck 🇧🇬 881 469 11ms 7 Feb 2026 209th zdzc 879 470 10ms 3 Feb 2018 209th celynw 879 470 9ms 26 Dec 2018 209th petroselo 879 470 10ms 11 Apr 2022 209th Just4FunCoder 879 470 10ms 26 Oct 2022 209th PATTRIM 879 470 9ms 4 Jan 2023 209th mbittner20 879 470 10ms 8 Feb 2023 209th 2011-Chan-Ethan 879 470 10ms 9 Jul 2023 209th GeneralPoxter 879 470 10ms 7 Dec 2023 209th cuboids 879 470 10ms 16 Jul 2024 209th thoraage 879 470 10ms 21 Oct 2024 209th starfihs 879 470 9ms 28 Dec 2024 209th To5BG 879 470 10ms 16 Nov 2025 209th iliaspapa 879 470 9ms 10 Dec 2025 209th tomh1012 879 470 10ms 27 days ago 223rd PiterAnnema 877 471 10ms 30 Aug 2020 223rd wirewolf010 877 471 10ms 3 Jan 2022 223rd CedricGebistorf 877 471 9ms 25 Feb 2022 223rd jmerle 🇳🇱 877 471 10ms 22 Jun 2023 223rd JunkIce 877 471 10ms 24 Sep 2024 223rd lukelarson 877 471 10ms 22 Apr 2025 223rd smaass 877 471 10ms 12 Jul 2025 223rd jacklee1792 877 471 11ms 6 Aug 2025 231st Gymhgy 875 472 10ms 23 Apr 2019 231st rak1507 🇬🇧 875 472 10ms 15 Oct 2020 231st awnion 875 472 9ms 26 Dec 2020 231st harrymwilkins 🇬🇧 875 472 10ms 19 Jul 2021 231st OpesMentis 875 472 10ms 29 Oct 2021 231st TimHuisman1703 875 472 10ms 7 Jan 2022 231st Hakiwen 875 472 10ms 21 Jan 2022 231st jm600 875 472 10ms 19 Apr 2022 231st twocatsinatrenchcoat 875 472 9ms 4 May 2022 231st PogLop 🇨🇿 875 472 10ms 15 Oct 2022 First Prev 161–240 of 1,171 Next Last
