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 Decoder 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 80th andrewjc2000 574 230 10ms 16 Jul 2025 82nd bastienvoirin 🇫🇷 569 232 10ms 5 Apr 2020 83rd marcin7Cd 552 239 15ms 14 Mar 2020 84th jacklynnepenick 548 241 11ms 28 Aug 2021 84th ImpressedByRocks 548 241 14ms 20 Sep 2022 84th jameswmccarty 548 241 10ms 7 Mar 2025 87th benwilliamgraham 545 242 11ms 10 Nov 2021 87th Troon 545 242 16ms 21 Oct 2022 87th jakobkordez 🇸🇮 545 242 11ms 31 Oct 2022 90th ArmaanAS 543 243 11ms 25 Mar 2021 90th CLOStrophobic 🇮🇹 543 243 10ms 26 Jan 2025 92nd yuchuehw 534 247 11ms 4 Jan 2024 93rd annaproxy 530 249 9ms 15 Jan 2023 93rd adamnielson42 🇺🇸 530 249 10ms 16 Nov 2023 95th Indivicivet 526 251 10ms 18 Oct 2021 96th Mabeloid 🇳🇴 520 254 10ms 12 Sep 2024 96th CopperyMarrow15 520 254 15ms 24 Aug 2025 98th Ted-Barrett 🇦🇺 518 255 10ms 1 Oct 2021 98th InigoK 🇺🇸 518 255 10ms 6 Sep 2025 100th cellobix 516 256 17ms 15 Aug 2019 100th scpchicken 🇵🇼 516 256 16ms 7 Apr 2022 102nd daedals 506 261 17ms 21 Jun 2019 103rd hiichbindermax 498 265 10ms 22 Nov 2025 104th Phanabani 🇺🇸 496 266 10ms 22 Oct 2020 104th krcs 🇵🇱 496 266 10ms 30 Jun 2023 106th Evan-Robotics 493 268 10ms 28 Jan 2022 107th vezzick 485 272 10ms 6 Mar 2021 107th knutae 🇳🇴 485 272 11ms 21 Aug 2021 107th glesnick 485 272 10ms 15 Jul 2022 110th NerdyMcNerd42 484 273 10ms 18 Feb 2023 111th bkshrader 482 274 16ms 27 Dec 2018 112th geofft 480 275 10ms 13 Dec 2020 113th myfatemi04 478 276 10ms 20 Sep 2018 114th kevinmchung 477 277 11ms 24 Feb 2018 114th yokasuretsu 477 277 10ms 26 Apr 2018 114th mbittner20 477 277 10ms 21 Jan 2024 117th naveenarun 473 279 10ms 6 Jun 2019 117th Starwort 🇬🇧 473 279 12ms 10 Feb 2020 119th NanduBC 471 280 11ms 22 Mar 2021 119th DrakeSeteraO 471 280 10ms 10 Nov 2025 121st skps2010 463 285 16ms 28 Dec 2018 121st amollberg 🇸🇪 463 285 17ms 15 Jan 2022 123rd dtbao20 🇻🇳 460 287 11ms 1 Oct 2024 123rd Emutis 🇱🇹 460 287 10ms 14 Nov 2025 125th davecame 454 291 10ms 15 Mar 2024 126th karhuthebear 452 292 10ms 5 May 2022 127th petar-donchev 446 296 10ms 8 Sep 2019 127th JVerwolf 446 296 15ms 26 Aug 2021 129th SniperSmiley 🇺🇸 443 298 10ms 4 Jul 2022 130th msrawson 437 302 10ms 2 Sep 2018 130th Bonjour27891 🇻🇳 437 302 11ms 13 Mar 2022 132nd BenBanerjeeRichards 434 304 10ms 12 Nov 2021 133rd fgrosshans 🇫🇷 431 306 10ms 9 May 2023 134th eiburns 424 311 10ms 25 Aug 2023 135th patbassing 414 319 10ms 8 Jul 2019 135th dymowski 414 319 10ms 3 Jan 2020 137th mathisfun271 407 324 10ms 19 Feb 2024 138th NicoAdams 405 326 10ms 30 Dec 2021 139th edre 401 329 10ms 30 Apr 2018 140th relet 400 330 16ms 9 Aug 2018 140th TobyBoyne 🇬🇧 400 330 13ms 15 Apr 2022 140th neihousaigaai 400 330 10ms 14 Feb 2024 143rd mizuzimu 399 331 11ms 16 Mar 2021 144th LeeCamp 398 332 18ms 25 Dec 2021 145th albanian-laundromat 394 335 11ms 3 Apr 2025 146th kurkale6ka 393 336 15ms 28 Dec 2023 147th zdzc 392 337 11ms 1 Apr 2018 148th tpaxman 🇨🇦 388 340 11ms 17 Dec 2020 148th OllieBoyne 🇬🇧 388 340 10ms 14 Apr 2022 150th KatieLG 🇬🇧 383 345 10ms 19 Jul 2025 151st 77Tigers 382 346 10ms 2 Mar 2021 152nd GodlyProgrammer1 377 350 10ms 22 Nov 2025 153rd jfallon1997 376 351 10ms 24 Aug 2022 154th TaserTheFox 🇺🇸 371 356 12ms 4 Apr 2023 154th vgamula 🇺🇦 371 356 10ms 8 Jul 2025 156th dzshn 370 357 10ms 25 Nov 2020 156th Pena86 370 357 10ms 31 Dec 2021 158th inverseLorentz 🇦🇺 368 359 10ms 11 Mar 2024 159th Psirving 367 360 10ms 2 Aug 2020 159th fajost 367 360 15ms 8 Sep 2020 First Prev 81–160 of 258 Next Last
