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?
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 danwley 323 167 10ms 29 Jul 2019 802nd UriyaBA 305 177 9ms 19 Jun 2023 803rd twrogers1 302 179 10ms 17 Aug 2020 804th themtamejaws 295 183 10ms 27 May 2020 805th RobertPoienar 293 184 10ms 18 Oct 2019 805th XavierRex 293 184 10ms 27 Dec 2023 805th quentinete 293 184 11ms 16 Feb 2024 808th AlesandAlexander 290 186 10ms 26 Dec 2018 809th AlexOgn 289 187 10ms 2 Dec 2020 810th PrestonWin 284 190 10ms 9 Nov 2021 811th fastaire29 278 194 9ms 8 Oct 2022 812th Zhenyu-Bo 263 205 10ms 30 Jul 2025 813th dachrillz 260 208 10ms 14 Oct 2018 814th Visckmart 248 218 11ms 22 Jul 2018 815th jmmographer 237 228 10ms 22 Oct 2023 816th Eugen-str 236 229 10ms 31 Oct 2023 817th Amheus 235 230 10ms 7 Oct 2023 818th sayloren 232 233 9ms 23 Jun 2021 819th KiwiLT 230 235 10ms 29 Nov 2022 820th minecire 224 241 10ms 20 Nov 2019 821st rmap202 212 255 10ms 16 Dec 2022 822nd kpasc 208 260 10ms 18 Jul 2018 823rd clodalala 176 306 10ms 1 Nov 2019 824th jcfizzler 174 311 10ms 3 Jun 2020 825th DylanGodfrey 165 327 9ms 7 Jun 2018 826th damienbowersock 163 331 10ms 22 Dec 2022 827th Cynopolis 158 341 10ms 26 Oct 2023 828th fl3ur1nestimable 133 405 9ms 30 Mar 2022 829th AidanWalter 120 450 9ms 3 Jan 2025 830th RobinStevenMartinez 108 502 10ms 27 Aug 2021 831st bignamehyp 99 545 10ms 14 Nov 2024 832nd IndyFS8 🇬🇧 97 557 10ms 1 Feb 2021 832nd kurkale6ka 97 557 9ms 25 Jul 2021 832nd theunofficialcoder 97 557 10ms 3 Aug 2021 832nd CatsAreFluffy 97 557 9ms 29 Jul 2023 832nd JKfromHMS 97 557 10ms 20 May 2024 832nd my-company-my 🇲🇽 97 557 11ms 22 Apr 2025 832nd madeforlosers 97 557 10ms 9 May 2025 832nd averagepythondev 97 557 10ms 2 Jan 2026 832nd NicoPlayZ9002-YT 97 557 10ms 6 Jan 2026 832nd jameswmccarty 97 557 10ms 26 Jan 2026 842nd ElevatorShaft 97 558 9ms 19 Jun 2019 842nd LocNgu 97 558 9ms 21 Jul 2023 844th dddthedark 97 559 9ms 5 Feb 2018 845th KatieLG-Transpiler 🇬🇧 89 607 10ms 23 Jun 2022 845th zt14427 89 607 10ms 18 Nov 2023 845th Carlos-EAC 89 607 9ms 1 Feb 2026 848th joshuamkite 84 645 11ms 15 Aug 2023 849th infinityTheorist 83 654 11ms 24 Jan 2024 850th Joe-V2 73 738 10ms 19 Apr 2022 First Prev 801–850 of 850
