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?
ASCII Table 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 391st Tha-vivid-one 243 284 16ms 16 Dec 2022 391st GWStuart 243 284 17ms 26 Dec 2022 391st retrohun 243 284 16ms 27 Dec 2022 391st Squidled 243 284 17ms 3 Jan 2023 391st C3P-Oops 243 284 16ms 24 Jan 2023 391st EnisEfe0 243 284 16ms 21 Feb 2023 391st UriyaBA 243 284 17ms 20 Mar 2023 391st markusgraube 243 284 19ms 14 Apr 2023 391st Gweronx 243 284 16ms 23 Apr 2023 391st Marsolo1 243 284 17ms 1 May 2023 391st vinkami 243 284 16ms 5 Jun 2023 391st Pyro569 243 284 18ms 4 Jul 2023 391st Mch47 243 284 17ms 29 Oct 2023 391st kurkale6ka 243 284 17ms 19 Nov 2023 391st HumanEquivalentUnit 243 284 16ms 25 Nov 2023 391st mstang107 243 284 16ms 20 Dec 2023 391st klixel 🇨🇦 243 284 16ms 22 Jan 2024 391st EvyGithub 243 284 16ms 27 Jan 2024 391st RJFuller 243 284 17ms 9 Feb 2024 391st Bit125 243 284 16ms 23 Feb 2024 391st alfonsoalves 243 284 17ms 27 Feb 2024 391st qwjhvbxi 243 284 16ms 5 Mar 2024 391st Pale-Vessel 243 284 17ms 7 Mar 2024 391st VictorStenvers 🇳🇱 243 284 16ms 15 May 2024 391st codingisgreatbutiamnot 243 284 16ms 19 Jul 2024 391st AtengChen 243 284 16ms 18 Aug 2024 391st nikifkon 243 284 16ms 30 Oct 2024 391st undefinedRyan 243 284 17ms 19 Apr 2025 391st realhackcraft 243 284 18ms 3 May 2025 391st madeforlosers 243 284 16ms 8 May 2025 391st Ivanchik-cyber 243 284 17ms 28 May 2025 391st benmuth 243 284 15ms 29 Aug 2025 391st rustykitty 🇺🇸 243 284 17ms 24 Oct 2025 391st webmiche 243 284 17ms 3 Nov 2025 391st averagepythondev 243 284 17ms 2 Jan 2026 391st NicoPlayZ9002-YT 243 284 16ms 6 Jan 2026 391st mossiegoat 243 284 17ms 27 Jan 2026 438th felixcroc 242 285 17ms 17 Apr 2022 438th MichaelClasby0 🇬🇧 242 285 17ms 16 Oct 2023 438th Unknownuserfrommars 242 285 10ms 7 Oct 2024 438th calum12345 242 285 17ms 25 Mar 2025 438th jacekwladzinski 242 285 10ms 8 Oct 2025 438th LesBoys43 242 285 16ms 9 Nov 2025 444th JKfromHMS 241 286 9ms 20 May 2024 444th cuboids 241 286 9ms 10 Jul 2024 444th liam824css 241 286 9ms 2 Mar 2025 447th jbrry 240 288 15ms 4 Jul 2022 447th Mewnojs 240 288 16ms 7 Mar 2024 447th kevinnaviapaiva 240 288 16ms 18 Feb 2025 450th NyuraDubu 239 289 10ms 10 Sep 2024 451st Brain-Boy-53 237 291 16ms 17 Jun 2024 452nd dillon-duncando 234 295 17ms 19 Oct 2022 453rd jaxmattfair 🇺🇸 232 298 16ms 14 Jan 2023 453rd Dejgz 232 298 17ms 11 Sep 2023 455th KatieLG-Transpiler 🇬🇧 231 299 10ms 23 Jun 2022 455th b-smyers 231 299 9ms 30 Jan 2025 457th ShaneReid91 230 300 10ms 10 Dec 2022 457th Noah-Fox 230 300 9ms 24 Jan 2025 459th carlsoncorey16 220 314 16ms 29 Oct 2023 460th muser-logiccpu 🇺🇦 205 336 10ms 19 Aug 2025 461st Yareeeema 202 341 16ms 23 Sep 2022 462nd christensendaniel 202 342 10ms 15 May 2024 463rd Giridesh 198 349 10ms 6 Sep 2022 464th plainoldcheese 🇦🇶 197 351 10ms 18 Jan 2024 465th bthalheim 191 362 16ms 3 Sep 2022 466th Jonson26 189 365 16ms 13 Feb 2026 467th Frowny 182 380 17ms 27 Mar 2022 468th vektech 162 425 16ms 9 Jul 2022 469th returnitynet 162 427 10ms 2 Jan 2025 470th esnethen 159 433 17ms 20 Feb 2023 471st sayloren 147 468 16ms 26 Feb 2023 472nd Zhenyu-Bo 136 509 10ms 30 Jul 2025 473rd AidanWalter 131 528 10ms 2 Jan 2025 First Prev 401–473 of 473
