The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 3 days. Why not try and solve them ahead of time?
Happy Numbers 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 641st qewdweftr4g 390 159 11ms 16 Oct 2024 642nd rajlath 388 160 10ms 9 Apr 2018 643rd peculiarination 383 162 17ms 11 May 2021 643rd Ugoran 383 162 10ms 1 Dec 2022 645th Ty-Cyr 380 163 10ms 13 Jul 2023 646th tbadun 378 164 14ms 8 Oct 2022 646th Natz12 378 164 10ms 27 Jan 2023 648th Pimveha 376 165 12ms 11 Jan 2023 649th EB-Brown 373 166 11ms 23 Aug 2019 650th tombs4 369 168 11ms 8 Jun 2020 651st YoungjuneKwon 365 170 11ms 6 Dec 2018 652nd hotmanga 363 171 9ms 7 Nov 2023 652nd xbxbxb007 363 171 10ms 10 Jan 2024 654th janga1 360 172 17ms 12 Aug 2021 654th GitQuick 360 172 11ms 9 Mar 2024 656th chriscconte 358 173 11ms 16 Apr 2019 656th jjbvtk 358 173 12ms 3 Sep 2021 658th skps2010 344 180 9ms 4 Jan 2019 658th devRND-ess 344 180 14ms 30 Apr 2020 658th GlennHA 344 180 9ms 15 May 2021 658th theunofficialcoder 344 180 10ms 12 Jan 2024 662nd willzywiec 343 181 9ms 5 Aug 2018 662nd Unknownuserfrommars 343 181 11ms 20 Nov 2024 664th zuparnowa 341 182 17ms 23 Jan 2019 664th henrytranter 341 182 16ms 20 Sep 2019 666th dylanjones92 337 184 10ms 17 Jan 2024 667th shinylego 335 185 11ms 19 Oct 2022 668th Aniketgautam 330 188 10ms 6 Apr 2018 668th schmisev 330 188 11ms 11 Oct 2018 668th alfonsoalves 330 188 10ms 27 Feb 2024 671st Bananapants22 328 189 11ms 16 Aug 2022 672nd jmmographer 326 190 12ms 20 Oct 2023 673rd AbuzarN 323 192 10ms 4 Oct 2023 674th rohan335 316 196 11ms 24 Jul 2024 675th newc0m 305 203 19ms 7 Dec 2018 676th muser-logiccpu 🇺🇦 304 204 10ms 9 Aug 2025 677th ariesmarinus 298 208 10ms 3 Dec 2024 678th itljan30 287 216 13ms 6 Oct 2024 679th janedoloris 283 219 10ms 14 Feb 2021 679th RobinStevenMartinez 283 219 10ms 27 Aug 2021 679th atazzam 🇺🇸 283 219 11ms 2 Apr 2022 682nd eje24 278 223 20ms 22 Jul 2020 683rd BLD933 🇲🇦 273 227 12ms 2 Sep 2023 684th kevinnaviapaiva 272 228 9ms 13 Feb 2025 685th DylanGodfrey 267 232 11ms 5 Jun 2018 686th clodalala 265 234 11ms 13 Nov 2019 687th dens558 262 237 9ms 25 May 2019 688th fl3ur1nestimable 258 240 10ms 3 Apr 2022 689th PrestonWin 249 249 10ms 20 Nov 2021 690th twrogers1 240 258 10ms 17 Aug 2020 691st rschwa6308 🇺🇸 238 260 18ms 6 Aug 2020 692nd kpasc 237 262 10ms 13 Jul 2018 693rd scottJsonar 230 269 9ms 29 Nov 2019 694th wrhm 225 276 9ms 12 Dec 2020 695th sayloren 218 284 11ms 11 Jun 2021 696th EmadAIsmael 214 290 10ms 16 Jan 2019 697th cybermoonman 212 293 24ms 23 Aug 2020 698th Emsi7 207 299 9ms 14 Jun 2023 699th Zhenyu-Bo 203 306 10ms 1 Aug 2025 700th NuqieNoila 197 314 12ms 1 Feb 2019 701st breeezi 185 335 10ms 3 Feb 2020 702nd Noooiz 183 338 12ms 30 Dec 2018 703rd valdemarsoegaard 182 341 10ms 2 Dec 2020 704th gregorywood99 174 356 9ms 20 Sep 2021 705th 1isaaclaryea 171 362 10ms 29 May 2020 706th cva 159 391 10ms 16 Apr 2020 707th sandybeachum 145 429 11ms 19 Mar 2021 708th somT-oss 141 440 10ms 28 Nov 2024 709th Crankbrother 139 446 11ms 25 Jun 2020 710th enok82 137 453 16ms 3 Sep 2019 711th Balaji-Jag 115 541 10ms 12 Nov 2019 712th nikkipinky 65 947 12ms 4 Jan 2021 First Prev 641–712 of 712
