The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 4 days. Why not try and solve them ahead of time?
Morse Encoder 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 160th knutae 🇳🇴 302 315 17ms 20 Jul 2019 160th TobyBoyne 🇬🇧 302 315 11ms 14 Apr 2022 163rd bbakersmith 301 316 10ms 19 Jul 2021 164th Haksell 🇦🇶 298 319 19ms 1 Dec 2019 164th Florian-Mt 298 319 10ms 13 Nov 2023 166th Emutis 🇱🇹 296 321 11ms 12 Aug 2025 167th PaulMWeiser 295 322 11ms 3 Mar 2023 168th garrisonhh 294 323 17ms 19 Nov 2020 169th qwjhvbxi 292 325 10ms 12 Feb 2024 170th dahrens 290 328 11ms 13 May 2021 171st mrmena 🇦🇺 289 329 19ms 11 Jun 2021 171st tomh1012 289 329 9ms 26 Feb 2026 173rd Edjyzod 288 330 11ms 31 Mar 2023 173rd MarshalX 🇵🇱 288 330 9ms 14 Nov 2024 175th lomarbrick 287 331 10ms 17 May 2023 175th Mathrew2012 287 331 10ms 9 Nov 2024 177th TaserTheFox 🇺🇸 285 333 13ms 5 Apr 2023 178th MaxElf999 283 336 11ms 28 Sep 2022 179th za3k 281 338 11ms 8 Oct 2022 179th CheeseCake628 🇳🇴 281 338 10ms 19 Jun 2025 181st Psirving 280 339 10ms 2 Aug 2020 181st TheZwierzLF 🇵🇱 280 339 10ms 8 Dec 2025 183rd TheAristos 279 341 11ms 30 Oct 2019 184th vgamula 🇺🇦 277 343 10ms 7 Jul 2025 185th OllieBoyne 🇬🇧 275 345 11ms 23 Jan 2021 186th codewrite 🇬🇧 274 347 10ms 12 Jul 2025 187th SoliGhost 273 348 12ms 8 Jun 2025 188th jfallon1997 271 350 10ms 13 May 2024 189th dzshn 270 352 10ms 25 Nov 2020 189th stordev 270 352 12ms 26 Feb 2021 189th 77Tigers 270 352 10ms 28 May 2021 192nd betaveros 266 357 9ms 1 Jan 2023 193rd richard-oelze 🇩🇪 265 358 10ms 20 Mar 2021 194th CaedenHarper 🇨🇦 262 362 10ms 10 Oct 2024 195th eiburns 260 365 10ms 8 May 2023 195th PotatoSaladOverlord 260 365 9ms 16 Jan 2024 197th temoto 259 367 10ms 20 Sep 2018 198th brochmann 🇸🇪 257 370 10ms 9 Feb 2022 198th m42km 257 370 12ms 23 Oct 2023 198th ridingqwerty 🇺🇸 257 370 11ms 3 Dec 2023 198th klixel 🇨🇦 257 370 9ms 23 Jan 2025 202nd 4ndyJ 🇬🇧 255 372 10ms 19 Jun 2025 203rd ragerin 255 373 17ms 21 Feb 2018 204th mokymok 🇺🇸 254 374 11ms 1 Dec 2021 205th croc54 253 376 10ms 14 Jan 2025 206th wrhm 247 385 11ms 12 Dec 2020 207th jhpaques 🇫🇷 246 386 10ms 29 Jul 2022 208th michelebastione 🇮🇹 245 388 11ms 21 Mar 2022 209th Openstreetmapler 244 390 11ms 23 Nov 2019 210th madex 🇩🇪 242 393 10ms 23 Jun 2024 211th Pena86 241 395 11ms 30 Dec 2021 211th ellis-rix 241 395 10ms 12 Jun 2023 213th jotslo 🇬🇧 238 399 12ms 5 Jul 2021 214th Mikey-Beep 🇬🇧 235 404 11ms 25 Aug 2023 215th bsoyka 🇺🇸 234 406 10ms 9 Jan 2022 216th eddvrs 232 410 11ms 20 Aug 2022 217th lrustand 231 412 11ms 19 Feb 2018 218th markbyrne 226 421 11ms 25 Oct 2020 219th HassanAliKadhem 🇧🇭 219 433 18ms 4 Jan 2022 220th Vaekor 217 437 10ms 16 Nov 2020 221st Trunksistor 🇫🇷 215 441 11ms 19 Apr 2022 222nd NanduBC 213 445 12ms 23 Mar 2021 223rd CutSandstone 213 446 16ms 5 Jul 2024 224th b4dpxl 210 452 10ms 4 Dec 2019 224th Andrey2001 210 452 11ms 31 Jan 2026 226th Starwort 🇬🇧 208 457 12ms 4 Mar 2019 226th RJFuller 208 457 10ms 23 Feb 2024 228th rollershutter 201 472 10ms 19 Jul 2023 228th HumanoidCPU 201 472 11ms 11 Jan 2026 230th 21zz 200 475 10ms 2 Dec 2022 231st aglahir1 197 483 13ms 21 Jul 2022 232nd vonKrafft 195 486 10ms 26 Mar 2020 233rd mothcolada 🇺🇸 195 487 10ms 11 Mar 2021 234th moshiba 194 490 10ms 18 Apr 2018 235th jtaxen 190 500 10ms 6 May 2024 236th twocatsinatrenchcoat 189 502 10ms 10 May 2022 237th valgardg 🇮🇸 188 504 10ms 10 Aug 2021 238th befoster 187 507 11ms 8 May 2021 239th JeromeSchweitzer 186 511 18ms 7 Sep 2020 239th Drew-j-Smith 186 511 10ms 29 Mar 2022 First Prev 161–240 of 286 Next Last
