The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 9 mins. 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 76th InigoK 🇺🇸 906 456 10ms 10 Oct 2025 76th plcc0 906 456 9ms 31 Jan 2026 83rd Haksell 🇦🇶 904 457 10ms 4 Feb 2021 83rd solisolu 904 457 10ms 24 days ago 85th lordnord 902 458 10ms 2 May 2020 85th davitf 902 458 9ms 7 May 2020 85th knutae 🇳🇴 902 458 9ms 9 Feb 2022 85th M0PKOBKA 902 458 9ms 27 Dec 2022 85th drochom 902 458 10ms 16 Jun 2024 85th fourth-bit 902 458 10ms 25 Sep 2024 91st magnickolas 900 459 10ms 30 Aug 2020 91st Shanethegamer 🇺🇸 900 459 10ms 11 Mar 2022 91st QuincyNash 🇺🇸 900 459 10ms 29 Nov 2022 91st keelimeguy 🇺🇸 900 459 30ms 25 Dec 2023 91st Liniarc 900 459 9ms 21 Nov 2024 91st cefqrn 900 459 9ms 18 Jan 2025 91st dirckvdende 900 459 10ms 29 Jun 2025 98th marcin7Cd 898 460 9ms 11 Dec 2020 98th RYNO8 898 460 10ms 29 Aug 2021 98th lucasvazq 🇦🇷 898 460 9ms 20 Mar 2022 98th jz268 898 460 10ms 6 Jul 2022 98th tooningelaere 898 460 10ms 4 Dec 2022 98th Fracture17 898 460 10ms 2 Apr 2023 98th dscholtz-lab49 898 460 10ms 15 May 2023 98th ndren 898 460 30ms 23 Dec 2023 98th CommandLeo 🇮🇹 898 460 10ms 4 Oct 2025 107th Faweks1 896 461 10ms 3 Aug 2018 107th elldur 896 461 10ms 17 Mar 2019 107th ludwig-n 896 461 9ms 7 Apr 2021 107th Indivicivet 896 461 9ms 26 Oct 2021 107th sultan 896 461 31ms 7 Jun 2022 107th idavidka 🇭🇺 896 461 10ms 17 May 2023 107th driri85 896 461 31ms 16 Feb 2024 107th kalex 896 461 9ms 17 Jul 2024 115th daedals 894 462 10ms 19 Jun 2019 115th xbjfk 894 462 10ms 25 Nov 2020 115th tpaxman 🇨🇦 894 462 10ms 15 Dec 2020 115th myleopard 894 462 10ms 29 Jan 2021 115th inventshah 894 462 10ms 27 Apr 2022 115th Edjyzod 894 462 10ms 3 Oct 2022 115th apreg 894 462 10ms 1 Jun 2023 115th emgordon154 894 462 11ms 14 Apr 2025 115th AnAwesomGuy 894 462 9ms 21 Dec 2025 124th Fishron 892 463 10ms 28 Dec 2021 124th TaserTheFox 🇺🇸 892 463 10ms 27 Apr 2023 124th jeff-at-tamer-dot-codes 🇺🇸 892 463 10ms 31 May 2023 124th JasonMcCallion 892 463 29ms 20 Dec 2023 124th CaedenHarper 🇨🇦 892 463 10ms 24 Jul 2024 124th jatloe 892 463 9ms 23 Oct 2024 124th snydej 892 463 9ms 29 Dec 2024 131st dzhang314 890 464 10ms 14 Aug 2019 131st DialFrost 🇸🇬 890 464 10ms 9 Feb 2023 131st eiburns 890 464 10ms 26 Oct 2023 131st kurkale6ka 890 464 9ms 3 Dec 2023 131st Vaekor 890 464 10ms 7 Feb 2024 131st l-donovan 890 464 11ms 27 Jun 2024 131st FortuiteMan 🇫🇷 890 464 10ms 17 Oct 2024 131st vhoulbreque 🇫🇷 890 464 11ms 30 Nov 2025 131st KatieLG 🇬🇧 890 464 9ms 9 Jan 2026 140th stordev 888 465 10ms 26 Feb 2021 140th omkarjois 888 465 10ms 17 Oct 2021 140th rickypoon 888 465 10ms 22 Jul 2022 140th DrPiranoid 888 465 10ms 26 Sep 2022 140th joll05 🇸🇪 888 465 10ms 1 Nov 2022 140th SirBogman 🇺🇸 888 465 10ms 5 Jan 2023 140th ehulinsky 🇺🇸 888 465 10ms 7 May 2023 140th erikji 888 465 9ms 3 Feb 2025 140th CornerMercury 🇬🇧 888 465 10ms 26 Oct 2025 149th lrustand 886 466 9ms 3 Feb 2018 149th TobyBoyne 🇬🇧 886 466 9ms 1 Jun 2019 149th RDShah 886 466 10ms 2 Feb 2020 149th dim-an 886 466 10ms 8 Dec 2020 149th OllieBoyne 🇬🇧 886 466 9ms 31 Dec 2020 149th ihalseide 🇺🇸 886 466 9ms 5 Jun 2021 149th Anonymousellama21 886 466 9ms 9 May 2022 149th jakobkordez 🇸🇮 886 466 9ms 19 Oct 2022 149th CatsAreFluffy 886 466 9ms 18 Dec 2022 149th PaulMWeiser 886 466 10ms 25 Mar 2023 149th MWI-polygolf 886 466 10ms 6 Dec 2023 149th logvp 886 466 10ms 12 Jan 2024 First Prev 81–160 of 1,171 Next Last
