The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 5 days. Why not try and solve them ahead of time?
Repeating Decimals 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 81st codewrite 🇬🇧 521 211 10ms 27 Jun 2025 82nd knutae 🇳🇴 519 212 18ms 13 Nov 2023 83rd elgan65536 🇺🇸 516 213 10ms 9 Nov 2024 83rd sciencejiho 516 213 10ms 11 Feb 2025 85th yzhs 🇩🇪 514 214 10ms 22 Jun 2023 85th CutSandstone 514 214 11ms 7 Jul 2024 85th croc54 514 214 11ms 30 Jan 2025 88th inverseLorentz 🇦🇺 512 215 11ms 19 Oct 2023 89th guilhem-roy 🇫🇷 509 216 11ms 6 Feb 2023 90th quimey 507 217 12ms 16 Mar 2023 90th BREMAUCY 🇫🇷 507 217 11ms 19 Mar 2024 90th albanian-laundromat 507 217 13ms 14 Sep 2025 93rd galloj 🇨🇿 495 222 11ms 1 Feb 2023 93rd TobyBoyne 🇬🇧 495 222 12ms 2 Feb 2023 93rd Bulmenisaurus 495 222 11ms 8 Sep 2025 96th aksyristos 493 223 11ms 6 Feb 2023 96th Lv0Sys 🇵🇱 493 223 11ms 25 Feb 2026 98th jmerle 🇳🇱 485 227 17ms 1 Feb 2023 99th trist224 🇫🇷 480 229 11ms 12 Aug 2024 99th Program-Pi 480 229 17ms 5 days ago 101st suwat513 478 230 10ms 16 Jun 2023 102nd jatloe 474 232 10ms 20 Sep 2024 103rd msbranicky 468 235 21ms 27 Aug 2023 104th luuumine 🇫🇷 455 242 11ms 24 Nov 2025 105th wuduculfre 453 243 12ms 22 Jul 2025 106th RDShah 449 245 13ms 3 Feb 2023 107th qwjhvbxi 447 246 11ms 24 Feb 2024 108th retrohun 445 247 10ms 11 Mar 2023 108th AtengChen 445 247 9ms 8 Aug 2024 110th CedricGebistorf 438 251 11ms 5 May 2023 111th fgrosshans 🇫🇷 433 254 10ms 5 May 2023 112th celiendonze 🇨🇭 430 256 10ms 25 May 2023 112th nooberitess 430 256 11ms 8 Apr 2025 114th driri85 425 259 11ms 15 Dec 2025 115th LostSyntax21 🇬🇧 423 260 10ms 27 Nov 2024 116th wh3n3v3r 🇨🇿 407 270 11ms 13 Nov 2024 117th alemelis 406 271 11ms 17 Oct 2024 118th RaBa21 🇭🇺 403 273 10ms 18 Jul 2025 119th ItsMeNoobieboy 390 282 11ms 19 Feb 2023 120th FlorianCassayre 🇫🇷 387 284 350ms 2 Feb 2023 121st yuchuehw 383 287 10ms 13 Feb 2024 121st dokutan 383 287 11ms 22 Oct 2025 123rd jtaxen 375 293 11ms 10 May 2024 124th eiburns 369 298 18ms 27 Oct 2023 125th Andrey2001 367 300 18ms 31 Jan 2026 126th JesseNoEyes 🇺🇸 364 302 11ms 19 Jan 2026 127th TaserTheFox 🇺🇸 358 307 17ms 24 Mar 2023 128th robin-scragg 357 308 10ms 10 Oct 2025 129th nstearns96 🇬🇧 354 311 12ms 13 Oct 2025 130th TheZwierzLF 🇵🇱 343 321 10ms 7 Dec 2025 131st mbittner20 333 330 11ms 27 May 2023 131st mathisfun271 333 330 16ms 19 Feb 2024 133rd ComputerKWasTaken 🇺🇸 329 334 10ms 8 Jun 2024 134th rollershutter 325 338 1,015ms 21 Jun 2023 135th KenanHanke 323 341 11ms 17 Aug 2025 136th cros107 🇦🇺 322 342 17ms 31 Aug 2023 137th adamnielson42 🇺🇸 310 355 11ms 1 Dec 2023 138th tomh1012 291 378 12ms 20 days ago 139th muser-logiccpu 🇺🇦 285 386 11ms 19 Aug 2025 140th Thestralos 279 394 11ms 24 Feb 2023 141st brimstonetrader 163 675 11ms 28 Feb 2024 142nd Zhenyu-Bo 139 794 11ms 1 Aug 2025 143rd atazzam 🇺🇸 111 987 13ms 12 Feb 2023 144th AidanWalter 110 1,004 10ms 3 Jan 2025 First Prev 81–144 of 144
