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 717th bingbingcrosby 544 114 10ms 8 Oct 2022 717th hotmanga 544 114 10ms 17 Oct 2023 717th xbxbxb007 544 114 10ms 10 Jan 2024 724th connorwagner 539 115 10ms 26 Jun 2018 724th ktnguyen2 539 115 9ms 4 Jan 2020 724th GreenyNeko 539 115 10ms 24 Jul 2020 727th Maxou73 534 116 9ms 16 Jun 2022 727th kevinnaviapaiva 534 116 10ms 12 Feb 2025 729th newc0m 530 117 10ms 15 Dec 2018 729th plasmaofthedawn 530 117 10ms 19 Feb 2019 729th befoster 530 117 9ms 10 Apr 2021 729th shibacho 🇯🇵 530 117 10ms 18 Mar 2022 729th Zach10za 530 117 11ms 29 Nov 2022 729th muser-logiccpu 🇺🇦 530 117 10ms 9 Aug 2025 735th hardlyBearable 525 118 10ms 12 May 2019 735th SchmulRosenzwe1g 525 118 10ms 2 Mar 2021 735th arinhyther 525 118 10ms 16 Jan 2023 735th eddvrs 525 118 9ms 20 Dec 2023 735th JoaoFelipe3 525 118 10ms 15 Jan 2024 735th Hyperoplex145 525 118 9ms 9 Nov 2025 741st raymond-li16 521 119 10ms 10 Jul 2020 741st keegan-t 🇨🇦 521 119 11ms 18 Sep 2021 741st StoverGitHub 521 119 10ms 15 Jun 2022 741st LeoTheMiner12 521 119 9ms 12 Jul 2025 745th ramonmedeiros 517 120 10ms 15 Dec 2020 745th Techno504 517 120 9ms 22 Sep 2021 747th ArturLange 512 121 10ms 17 Apr 2020 747th sli-Lut 512 121 9ms 11 Oct 2023 749th mkski 504 123 10ms 9 Jun 2019 749th MattUDCompSci 504 123 9ms 22 Sep 2022 751st jmjaggi1202 500 124 10ms 13 Dec 2023 752nd fabs1 496 125 9ms 22 Mar 2019 752nd dcure73 496 125 9ms 7 Jun 2019 752nd cross 496 125 10ms 9 Nov 2024 752nd Rago-Tony 496 125 9ms 24 Jun 2025 752nd plopa1 496 125 10ms 15 Sep 2025 757th cseiter 492 126 10ms 22 Jun 2022 757th sgaltair 492 126 10ms 22 Feb 2023 759th ClasherKasten-zz 488 127 10ms 3 May 2020 759th jackdonofrio 488 127 9ms 25 Sep 2020 759th freerainboxbox 488 127 9ms 23 Jul 2021 759th AleksKnezevic 488 127 10ms 21 Feb 2024 763rd Nick-Sullivan 484 128 10ms 12 Dec 2021 763rd Rambso 484 128 9ms 19 Feb 2023 765th niallcurtis 481 129 10ms 8 Dec 2020 765th Nibamot 481 129 11ms 17 Dec 2021 767th anclrii 477 130 9ms 14 Feb 2023 768th Guptacos 473 131 10ms 29 Mar 2021 768th Creator-land 473 131 10ms 30 Nov 2023 770th zstearman3 466 133 9ms 23 Apr 2020 770th JackSealy 466 133 10ms 17 Feb 2021 772nd jgermain48 463 134 10ms 9 Dec 2019 772nd TheBitShepherd 463 134 10ms 5 Apr 2021 772nd JakeI 463 134 10ms 15 Jun 2021 775th chris3145 456 136 9ms 30 Jun 2022 776th Dejgz 453 137 9ms 11 Sep 2023 777th AreYouW 449 138 10ms 6 Dec 2019 778th CRHillman 446 139 10ms 17 Aug 2018 778th rowboat1 446 139 10ms 10 Jun 2022 778th alfonsoalves 446 139 10ms 21 Jul 2024 781st mokymok 🇺🇸 440 141 11ms 22 Oct 2021 782nd jhawk101 437 142 10ms 12 Mar 2021 783rd Crito02 434 143 10ms 2 Mar 2021 784th Thive-N 428 145 10ms 10 Oct 2020 785th DGipe 425 146 9ms 2 Dec 2022 786th dylanjones92 422 147 9ms 22 Jan 2024 787th jcrutle 416 149 10ms 30 Mar 2021 787th MiranDaniel 🇨🇿 416 149 10ms 30 Aug 2023 789th jimenez20 413 150 10ms 16 Dec 2019 789th elekktrozone 413 150 10ms 6 Dec 2021 789th NoneTheFewer 413 150 10ms 25 Dec 2025 792nd warrinerbros 411 151 10ms 7 Dec 2021 793rd oAsAo 408 152 11ms 21 Jan 2020 794th TheAtrossian 400 155 10ms 5 Jan 2025 795th CuboidRaptor 🇨🇦 388 160 10ms 18 Jan 2022 796th jersonjgarcia 385 161 10ms 22 Sep 2020 797th Crankbrother 383 162 10ms 26 Jun 2020 798th leon-w 378 164 11ms 7 Jan 2019 799th tmanternach 373 166 10ms 23 Nov 2022 800th danwley 371 167 10ms 29 Jul 2019 First Prev 721–800 of 849 Next Last
