The Gray Code Decoder and Gray Code Encoder holes will go live in approximately 6 days. Why not try and solve them ahead of time?
√2 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 230th yzhs 🇩🇪 721 68 12ms 19 Jan 2020 230th Daniel-Martin576 721 68 13ms 1 Apr 2020 230th Jviscus1 721 68 12ms 24 Apr 2020 230th GalladeGuy 🇺🇸 721 68 12ms 23 May 2020 230th aliakseikalosha 721 68 13ms 9 Jun 2020 230th Jumprocks1 721 68 13ms 11 Jun 2020 230th itiievskyi 🇺🇦 721 68 12ms 30 Jul 2020 230th dev-loop0 721 68 12ms 20 Aug 2020 230th linstr13 721 68 12ms 29 Sep 2020 230th mueller14003 721 68 12ms 8 Oct 2020 230th thisishowmymindworks 🇳🇴 721 68 47ms 14 Oct 2020 230th davidverweij 721 68 12ms 21 Oct 2020 230th martinsifrar 721 68 12ms 23 Oct 2020 230th KatieLG 🇬🇧 721 68 12ms 1 Nov 2020 230th Dazza314 🇬🇧 721 68 12ms 6 Nov 2020 230th austinrwarner 721 68 12ms 25 Dec 2020 230th Tess2662 721 68 12ms 11 Jan 2021 230th fynnkroeger 721 68 12ms 20 Jan 2021 230th ydevor 🇮🇱 721 68 13ms 22 Feb 2021 230th asadullayev 721 68 12ms 3 Mar 2021 230th orifu 721 68 12ms 19 Mar 2021 230th josephjojoe 721 68 12ms 19 Mar 2021 230th enbyte 721 68 12ms 21 May 2021 230th harrymwilkins 🇬🇧 721 68 12ms 18 Jul 2021 230th RYNO8 721 68 12ms 7 Aug 2021 230th ngocbd 🇻🇳 721 68 12ms 31 Aug 2021 230th potato-jackson 721 68 13ms 6 Sep 2021 230th ToE42 721 68 13ms 7 Sep 2021 230th ehulinsky 🇺🇸 721 68 12ms 16 Sep 2021 230th redbeancola 721 68 12ms 11 Oct 2021 230th walterfeyman 721 68 12ms 30 Oct 2021 230th xy3 🇮🇪 721 68 13ms 18 Nov 2021 230th sleepyStick 721 68 12ms 7 Dec 2021 230th akshatj27 🇦🇶 721 68 11ms 11 Jan 2022 230th Bonjour27891 🇻🇳 721 68 13ms 10 Feb 2022 230th LeeCamp 721 68 12ms 15 Feb 2022 230th SomeKitten 🇺🇸 721 68 12ms 20 Aug 2022 230th suwat513 721 68 12ms 23 Sep 2022 230th ValentinCassayre 721 68 12ms 9 Oct 2022 230th tpasfieldERAU 721 68 12ms 9 Nov 2022 230th Omega65536 🇩🇪 721 68 11ms 23 Nov 2022 230th jfallon1997 721 68 12ms 3 Jan 2023 230th Smoncko 721 68 13ms 1 Feb 2023 230th DragonaireM 721 68 11ms 6 Feb 2023 230th m3nt0ras 🇬🇷 721 68 12ms 16 Feb 2023 230th crispshaker 721 68 24ms 18 Mar 2023 230th MiranDaniel 🇨🇿 721 68 12ms 29 Apr 2023 230th sd3b 721 68 11ms 1 May 2023 230th ZoeyKD 721 68 12ms 14 May 2023 230th Ripick 721 68 12ms 22 May 2023 230th msbranicky 721 68 12ms 10 Jul 2023 230th cingulataluke 721 68 12ms 26 Aug 2023 230th bac0id 721 68 12ms 20 Sep 2023 230th Stockoh 🇫🇷 721 68 14ms 5 Nov 2023 230th keelimeguy 🇺🇸 721 68 13ms 6 Nov 2023 230th firegene 🇮🇪 721 68 12ms 24 Nov 2023 230th m42km 721 68 12ms 8 Dec 2023 230th zwxzwxzwx21 721 68 13ms 13 Dec 2023 230th epic-programmer-guy 721 68 12ms 17 Dec 2023 230th smokestacklightnin 🇺🇸 721 68 12ms 29 Dec 2023 230th Dataen 721 68 13ms 12 Jan 2024 230th scpchicken 🇵🇼 721 68 12ms 1 Feb 2024 230th Just4FunCoder 721 68 12ms 26 Feb 2024 230th roupiq 🇵🇱 721 68 13ms 27 Feb 2024 230th sultan 721 68 12ms 9 Mar 2024 230th vgamula 🇺🇦 721 68 12ms 18 May 2024 230th stertooy 🇧🇪 721 68 13ms 11 Jun 2024 230th LHLaurini 🇧🇷 721 68 12ms 5 Jul 2024 230th codingisgreatbutiamnot 721 68 11ms 14 Jul 2024 230th HumanoidCPU 721 68 13ms 29 Aug 2024 230th voytxt 🇨🇿 721 68 12ms 13 Sep 2024 230th starfihs 721 68 12ms 26 Feb 2025 230th gigaprofisi 🇺🇸 721 68 12ms 2 Mar 2025 230th 0dyse 721 68 13ms 29 Apr 2025 230th codewrite 🇬🇧 721 68 13ms 7 May 2025 230th Voltrifrodec 🇸🇰 721 68 12ms 14 May 2025 230th JOrE-Softwares 721 68 11ms 21 May 2025 230th BenjaminHGong 721 68 13ms 23 May 2025 230th sainiayush 721 68 13ms 14 Jul 2025 230th GoldStar184 721 68 13ms 17 Jul 2025 First Prev 241–320 of 581 Next Last
