The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 2 days. Why not try and solve them ahead of time?
Rock-paper-scissors-Spock-lizard 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 hymanimy 451 244 10ms 20 Aug 2021 160th twocatsinatrenchcoat 451 244 13ms 25 Nov 2022 160th mathisfun271 451 244 11ms 7 Feb 2024 160th Pyroan 451 244 12ms 27 Feb 2025 165th sambirnbaum1 449 245 10ms 12 Oct 2019 165th kypi 449 245 24ms 22 Feb 2020 165th guilhem-roy 🇫🇷 449 245 11ms 7 Mar 2022 165th BREMAUCY 🇫🇷 449 245 12ms 3 days ago 169th Emutis 🇱🇹 445 247 10ms 24 Oct 2024 169th luuumine 🇫🇷 445 247 10ms 6 Oct 2025 171st BrenSchaap 444 248 11ms 21 Oct 2021 171st resoNathan 444 248 11ms 19 Jun 2024 171st tomh1012 444 248 10ms 25 days ago 174th argusdusty 🇺🇸 442 249 10ms 27 Dec 2020 174th ffelixm 442 249 11ms 31 May 2025 176th Indivicivet 440 250 10ms 19 Oct 2021 177th yuchuehw 437 252 10ms 11 Jan 2024 178th camieac 🇬🇧 435 253 11ms 20 Aug 2023 178th professor-l 435 253 15ms 22 hours ago 180th marcin7Cd 433 254 12ms 17 Dec 2020 180th inverseLorentz 🇦🇺 433 254 10ms 21 Jun 2022 180th bbnumber2 433 254 17ms 29 Oct 2023 180th TheZwierzLF 🇵🇱 433 254 13ms 24 Nov 2025 184th guliyevemil1 🇦🇿 431 255 11ms 16 Apr 2020 184th j21marshall 431 255 14ms 7 Aug 2020 184th MaxElf999 431 255 13ms 28 Sep 2022 187th OSYCh314 🇦🇺 425 259 11ms 16 Feb 2026 188th Florian-Mt 423 260 10ms 20 Nov 2023 189th DarkTemplar5 421 261 17ms 22 Feb 2020 190th lmolteno 420 262 11ms 9 Mar 2021 191st pascscha 418 263 11ms 28 Mar 2022 191st Vilzku 418 263 15ms 14 Oct 2022 193rd RandGuy 417 264 11ms 16 Nov 2022 193rd roguh 🇬🇹 417 264 11ms 25 Jan 2024 195th akira-aizawa 🇯🇵 412 267 10ms 29 Oct 2020 195th kenny14231 412 267 12ms 5 Aug 2022 197th Fracture17 410 268 10ms 15 Apr 2023 197th chichha 410 268 10ms 30 Jan 2024 197th 4ndyJ 🇬🇧 410 268 13ms 31 Jan 2024 200th mbittner20 409 269 13ms 27 May 2023 201st AkashTandon167 407 270 11ms 29 Dec 2020 201st kayaulai 407 270 17ms 23 Nov 2025 203rd NicoAdams 406 271 13ms 22 Nov 2021 203rd Stockoh 🇫🇷 406 271 10ms 1 May 2024 203rd codingisgreatbutiamnot 406 271 15ms 23 Aug 2024 206th staehlii 404 272 11ms 16 Jun 2022 207th ian-h-chamberlain 🇺🇸 403 273 10ms 29 Dec 2019 207th mrmena 🇦🇺 403 273 11ms 19 Jun 2021 207th eddvrs 403 273 31ms 22 Dec 2023 210th mothcolada 🇺🇸 400 275 11ms 4 Dec 2020 210th Trunksistor 🇫🇷 400 275 11ms 9 May 2022 210th hiichbindermax 400 275 11ms 8 Sep 2024 213th stordev 399 276 11ms 26 Feb 2021 213th FortuiteMan 🇫🇷 399 276 10ms 8 Sep 2023 213th fgrosshans 🇫🇷 399 276 10ms 22 Jul 2024 216th janga1 397 277 14ms 22 Aug 2021 216th joonaspu 397 277 12ms 4 Jun 2023 218th haydenridd 396 278 11ms 2 Jul 2020 218th P-Quentin 🇫🇷 396 278 11ms 5 Aug 2022 218th Starwort 🇬🇧 396 278 11ms 11 Nov 2022 218th PotatoSaladOverlord 396 278 11ms 21 May 2025 222nd skps2010 394 279 17ms 19 Jun 2019 222nd madex 🇩🇪 394 279 12ms 7 Mar 2024 224th dranjohn 391 281 10ms 24 Sep 2023 224th yokasuretsu 391 281 10ms 11 Jul 2025 226th HerLovelyTentacles 390 282 11ms 8 Feb 2021 226th jameslindesay 390 282 10ms 25 Feb 2021 226th myleopard 390 282 12ms 13 Oct 2021 229th cros107 🇦🇺 389 283 10ms 26 Sep 2024 230th BraedenMooreDev 386 285 16ms 29 Oct 2023 230th wh3n3v3r 🇨🇿 386 285 11ms 8 Nov 2024 230th KadinSchultz 386 285 10ms 3 days ago 233rd sciencejiho 385 286 10ms 26 Apr 2024 233rd RedzGoose 🇦🇺 385 286 11ms 23 Oct 2024 235th n1LS 383 287 14ms 25 Sep 2019 236th hellwue 382 288 12ms 14 Feb 2023 237th DrPrettyman 381 289 16ms 24 Jul 2023 238th Kloppermand 🇩🇰 378 291 13ms 1 Dec 2021 238th abba23 378 291 11ms 26 May 2022 240th epic-programmer-guy 377 292 10ms 31 Dec 2023 First Prev 161–240 of 323 Next Last
