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?
Seven Segment 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 239th Tess2662 412 194 9ms 31 Aug 2022 242nd LogicalJoe 410 195 10ms 11 Oct 2022 242nd JTHCode 410 195 10ms 23 Oct 2025 244th Fanrco 408 196 10ms 4 Sep 2023 244th RedzGoose 🇦🇺 408 196 10ms 25 Oct 2024 246th CheeseCake628 🇳🇴 406 197 10ms 3 Mar 2024 247th omgardner 404 198 10ms 11 Aug 2019 247th martinnorling 🇸🇪 404 198 10ms 22 Jun 2022 249th BrenSchaap 402 199 10ms 21 Oct 2021 249th sleepyStick 402 199 16ms 7 Dec 2021 249th adamnielson42 🇺🇸 402 199 9ms 18 May 2023 249th TheZwierzLF 🇵🇱 402 199 10ms 14 Dec 2025 253rd PhysicDev 🇫🇷 400 200 10ms 18 Mar 2022 253rd twocatsinatrenchcoat 400 200 9ms 5 Jun 2022 255th ArturLange 398 201 9ms 12 Sep 2018 255th Omega65536 🇩🇪 398 201 10ms 7 Jan 2021 255th RDShah 398 201 9ms 11 May 2022 255th aalec 398 201 9ms 25 Apr 2024 259th djtuBIG-MaliceX 396 202 10ms 30 Jan 2018 259th michelebastione 🇮🇹 396 202 10ms 19 Feb 2020 261st denkyuu1 394 203 10ms 2 Feb 2026 262nd simon-thornton_pace 392 204 9ms 26 Jan 2024 262nd vhoulbreque 🇫🇷 392 204 10ms 3 Dec 2025 264th jrdallen97 390 205 10ms 4 Oct 2017 264th timchu 390 205 10ms 4 Mar 2021 264th amollberg 🇸🇪 390 205 9ms 25 Jan 2022 264th NerdyMcNerd42 390 205 9ms 11 Jun 2023 264th ThijsLuttikhuis 390 205 10ms 3 Mar 2024 264th julian-hoelz 390 205 9ms 22 Sep 2024 270th AIn0n 388 206 9ms 27 Aug 2021 270th r-benson 🇬🇧 388 206 10ms 1 Feb 2023 270th celiendonze 🇨🇭 388 206 10ms 16 Apr 2023 273rd HumanEquivalentUnit 386 207 17ms 30 Dec 2021 273rd nemoyatpeace 386 207 10ms 19 Jan 2026 275th alangodfrey 383 209 9ms 18 Feb 2019 276th bbakersmith 381 210 10ms 14 Jul 2021 276th cubed-guy 381 210 10ms 17 Oct 2021 278th nstearns96 🇬🇧 379 211 10ms 18 Jan 2023 279th vishwathg 377 212 10ms 16 Sep 2022 279th LostSyntax21 🇬🇧 377 212 10ms 30 Nov 2025 281st Vaekor 376 213 10ms 16 Nov 2020 281st MaxElf999 376 213 10ms 30 Sep 2022 281st eiburns 376 213 9ms 21 Jan 2023 281st chartung17 376 213 9ms 24 Mar 2025 285th caerbannogwhite 374 214 10ms 14 Apr 2018 285th ellis-rix 374 214 10ms 25 Feb 2022 285th RandGuy 374 214 10ms 2 Apr 2022 288th orifu 372 215 16ms 19 Mar 2021 288th ethandhunt 372 215 29ms 16 Aug 2021 290th decorator-factory 370 216 10ms 16 Jun 2019 290th argusdusty 🇺🇸 370 216 10ms 2 Jan 2021 290th galloj 🇨🇿 370 216 16ms 31 Aug 2022 290th firegene 🇮🇪 370 216 10ms 13 Apr 2024 294th SimonPeatman 369 217 10ms 29 Dec 2018 294th mrmena 🇦🇺 369 217 10ms 29 May 2021 294th jfallon1997 369 217 10ms 7 Sep 2022 294th zt14427 369 217 10ms 18 Nov 2023 298th bsoyka 🇺🇸 367 218 10ms 16 Jul 2022 298th gXLg 🇩🇪 367 218 10ms 19 Sep 2023 300th markus-rekdal 365 219 9ms 4 Jun 2019 300th andre-lameirinhas 🇵🇹 365 219 17ms 15 Jan 2020 300th aksyristos 365 219 10ms 20 Jan 2023 303rd richard-oelze 🇩🇪 364 220 16ms 12 Sep 2021 304th AkashTandon167 362 221 12ms 11 Jan 2021 305th sciencedjinn 360 222 10ms 8 Nov 2024 306th Visckmart 359 223 10ms 23 Jul 2018 306th sambirnbaum1 359 223 10ms 11 Oct 2019 306th Anonymousellama21 359 223 10ms 16 May 2024 306th muser-logiccpu 🇺🇦 359 223 9ms 9 Aug 2025 310th trist224 🇫🇷 357 224 10ms 28 Nov 2022 310th CyberTapir 357 224 10ms 28 Aug 2024 312th Trunksistor 🇫🇷 356 225 10ms 26 Apr 2022 313th TimHuisman1703 354 226 10ms 7 Jan 2022 313th htprogras 354 226 9ms 15 May 2022 313th johndixon01 354 226 10ms 22 Sep 2022 313th Mikey-Beep 🇬🇧 354 226 10ms 1 Jun 2024 317th slopey112 352 227 10ms 11 Nov 2020 318th hellwue 351 228 10ms 4 Sep 2024 319th DarkTemplar5 348 230 10ms 2 Mar 2020 319th TheYMI 348 230 10ms 20 May 2020 First Prev 241–320 of 429 Next Last
