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 chars. 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 Chars Time Submitted 801st UriyaBA 305 177 9ms 19 Jun 2023 802nd twrogers1 302 179 10ms 17 Aug 2020 803rd themtamejaws 295 183 10ms 27 May 2020 804th RobertPoienar 293 184 10ms 18 Oct 2019 804th XavierRex 293 184 10ms 27 Dec 2023 804th quentinete 293 184 11ms 16 Feb 2024 807th AlesandAlexander 290 186 10ms 26 Dec 2018 808th AlexOgn 289 187 10ms 2 Dec 2020 809th PrestonWin 284 190 10ms 9 Nov 2021 810th fastaire29 278 194 9ms 8 Oct 2022 811th Zhenyu-Bo 263 205 10ms 30 Jul 2025 812th dachrillz 260 208 10ms 14 Oct 2018 813th Visckmart 248 218 11ms 22 Jul 2018 814th jmmographer 237 228 10ms 22 Oct 2023 815th Eugen-str 236 229 10ms 31 Oct 2023 816th Amheus 235 230 10ms 7 Oct 2023 817th sayloren 232 233 9ms 23 Jun 2021 818th KiwiLT 230 235 10ms 29 Nov 2022 819th minecire 224 241 10ms 20 Nov 2019 820th rmap202 212 255 10ms 16 Dec 2022 821st kpasc 208 260 10ms 18 Jul 2018 822nd clodalala 176 306 10ms 1 Nov 2019 823rd jcfizzler 174 311 10ms 3 Jun 2020 824th DylanGodfrey 165 327 9ms 7 Jun 2018 825th damienbowersock 163 331 10ms 22 Dec 2022 826th Cynopolis 158 341 10ms 26 Oct 2023 827th fl3ur1nestimable 133 405 9ms 30 Mar 2022 828th AidanWalter 120 450 9ms 3 Jan 2025 829th RobinStevenMartinez 108 502 10ms 27 Aug 2021 830th bignamehyp 99 545 10ms 14 Nov 2024 831st IndyFS8 🇬🇧 97 557 10ms 1 Feb 2021 831st kurkale6ka 97 557 9ms 25 Jul 2021 831st theunofficialcoder 97 557 10ms 3 Aug 2021 831st CatsAreFluffy 97 557 9ms 29 Jul 2023 831st JKfromHMS 97 557 10ms 20 May 2024 831st my-company-my 🇲🇽 97 557 11ms 22 Apr 2025 831st madeforlosers 97 557 10ms 9 May 2025 831st averagepythondev 97 557 10ms 2 Jan 2026 831st NicoPlayZ9002-YT 97 557 10ms 6 Jan 2026 831st jameswmccarty 97 557 10ms 26 Jan 2026 841st ElevatorShaft 97 558 9ms 19 Jun 2019 841st LocNgu 97 558 9ms 21 Jul 2023 843rd dddthedark 97 559 9ms 5 Feb 2018 844th KatieLG-Transpiler 🇬🇧 89 607 10ms 23 Jun 2022 844th zt14427 89 607 10ms 18 Nov 2023 844th Carlos-EAC 89 607 9ms 1 Feb 2026 847th joshuamkite 84 645 11ms 15 Aug 2023 848th infinityTheorist 83 654 11ms 24 Jan 2024 849th Joe-V2 73 738 10ms 19 Apr 2022 First Prev 801–849 of 849
