The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 6 days. Why not try and solve them ahead of time?
Christmas Trees 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 638th bbakersmith 602 103 17ms 1 Jul 2021 638th LukasFolwarczny 🇨🇿 602 103 9ms 17 Sep 2022 638th goGuru 602 103 9ms 17 Dec 2022 638th roylucas 602 103 9ms 16 Jan 2023 638th Joe85gr 602 103 16ms 30 Sep 2023 638th l-donovan 602 103 9ms 6 Feb 2024 638th NickTheEASDude 🇺🇸 602 103 10ms 11 Apr 2024 638th firegene 🇮🇪 602 103 10ms 16 Feb 2026 638th jusaka 602 103 10ms 6 days ago 650th babulibaba 596 104 9ms 15 Aug 2019 650th besasam 596 104 9ms 31 Mar 2021 650th P-Quentin 🇫🇷 596 104 10ms 8 Aug 2022 650th Hunter-Fairchild 596 104 9ms 30 Aug 2022 650th anonymaew 596 104 10ms 3 Aug 2023 650th azure-blondon 596 104 10ms 10 Feb 2024 650th RobertHoeh 596 104 9ms 16 May 2024 650th DanielBash 596 104 10ms 16 Feb 2025 650th Sharrrkkk 596 104 10ms 21 Jul 2025 659th hjcafaroUC 590 105 10ms 1 Aug 2020 659th wrhm 590 105 9ms 12 Dec 2020 659th gheissen 590 105 9ms 23 Dec 2020 659th krcs 🇵🇱 590 105 10ms 27 Dec 2021 659th alytarik 590 105 11ms 11 Jan 2022 659th petroselo 590 105 10ms 12 Apr 2022 659th jamespeilunli 590 105 11ms 29 Apr 2022 659th Techdude01 590 105 10ms 21 Dec 2023 659th aarooosh 590 105 9ms 8 Aug 2024 659th nemoyatpeace 590 105 10ms 14 Jan 2026 669th Adi-K527 585 106 9ms 24 Apr 2021 669th jbrry 585 106 11ms 5 Jul 2022 669th bartvw 585 106 9ms 28 Oct 2022 669th asmull 585 106 10ms 20 Nov 2023 669th gautambp 585 106 11ms 30 Jun 2025 669th codewrite 🇬🇧 585 106 10ms 4 Jul 2025 669th Mefred 585 106 10ms 30 Jan 2026 676th kusti8 579 107 9ms 30 Jul 2019 676th ValdeQwerty 579 107 10ms 27 Nov 2019 676th Nordle 579 107 10ms 28 Feb 2020 676th cole-wilson 579 107 10ms 3 Dec 2020 676th NicoAdams 579 107 10ms 21 Nov 2021 676th twocatsinatrenchcoat 579 107 9ms 5 May 2022 676th 6lr61 579 107 10ms 1 Dec 2022 676th Smorgasaurus 579 107 10ms 15 Apr 2023 684th ridingqwerty 🇺🇸 574 108 10ms 22 Dec 2023 684th CyberTapir 574 108 10ms 1 Sep 2024 684th Deppyforce 574 108 10ms 12 days ago 687th wilkij1 569 109 10ms 16 Jun 2018 687th h-hh-hhh 🇺🇦 569 109 10ms 10 Jan 2022 687th Trunksistor 🇫🇷 569 109 9ms 21 Apr 2022 687th jorisbertram 569 109 10ms 26 Aug 2022 687th jhpaques 🇫🇷 569 109 10ms 6 Dec 2022 687th JakeDaCake36 569 109 11ms 18 Feb 2024 687th FCORMERAIS 569 109 9ms 5 Mar 2024 694th tkwa 564 110 10ms 4 Dec 2018 694th ionutm82 564 110 10ms 18 Dec 2018 694th zuparnowa 564 110 9ms 28 Jan 2019 694th henrytranter 564 110 10ms 20 Sep 2019 694th cthierfelder 🇲🇨 564 110 10ms 13 Nov 2025 699th adoxography 559 111 9ms 21 May 2018 699th Bananapants22 559 111 10ms 21 Sep 2022 699th Nightmarius 559 111 10ms 19 Jan 2024 702nd GeoffroyF 554 112 10ms 14 May 2018 702nd SimonPeatman 554 112 10ms 29 Dec 2018 702nd LaisaLI 554 112 10ms 4 Oct 2019 702nd JorenZ 554 112 9ms 10 Oct 2021 702nd LeeCamp 554 112 10ms 27 Nov 2021 702nd dragonshadows07 554 112 9ms 7 Feb 2024 702nd mbittner20 554 112 10ms 21 Sep 2024 702nd chenyuan33 554 112 9ms 21 Feb 2026 710th jackkav 549 113 10ms 20 Jan 2019 710th goliwok 549 113 9ms 8 Aug 2020 710th mrmena 🇦🇺 549 113 10ms 22 Jun 2021 710th raphaelimahorn 549 113 9ms 3 Aug 2021 710th zwxzwxzwx21 549 113 10ms 18 Jan 2024 710th julian-hoelz 549 113 9ms 16 Sep 2024 710th Deedogg 549 113 10ms 16 Nov 2024 717th bkshrader 544 114 9ms 19 Mar 2019 717th ieeemma 544 114 9ms 31 Jul 2019 717th mortimervonchappuis 544 114 10ms 7 Mar 2020 717th pyrolitic 🇮🇪 544 114 10ms 7 Apr 2022 First Prev 641–720 of 849 Next Last
