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 all languages 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 801st BrenSchaap 711 48 36ms 12 Nov 2021 801st jared-hughes 711 48 36ms 20 Jan 2023 801st DialFrost 🇸🇬 711 48 75ms 27 Dec 2024 804th Schmitt-Very-Cool 710 88 473ms 3 Oct 2025 804th raphaelimahorn 710 88 400ms 13 days ago 806th lynn 709 225 219ms 4 Aug 2023 807th markus-rekdal 708 68 23ms 31 May 2019 807th qoqosz 708 68 12ms 6 Jun 2019 807th giacomogallina 708 68 12ms 6 Jun 2019 807th skps2010 708 68 14ms 14 Jun 2019 807th hoodadam 708 68 13ms 19 Jul 2019 807th dzhang314 708 68 13ms 14 Aug 2019 807th sk- 708 68 12ms 11 Sep 2019 807th handisb 708 68 12ms 2 Nov 2019 807th amishtal 708 68 13ms 27 Nov 2019 807th Haksell 🇦🇶 708 68 12ms 1 Dec 2019 807th Matistjati 708 68 11ms 3 Dec 2019 807th yzhs 🇩🇪 708 68 12ms 19 Jan 2020 807th Daniel-Martin576 708 68 13ms 1 Apr 2020 807th Jviscus1 708 68 12ms 24 Apr 2020 807th GalladeGuy 🇺🇸 708 68 12ms 23 May 2020 807th aliakseikalosha 708 68 13ms 9 Jun 2020 807th Jumprocks1 708 68 13ms 11 Jun 2020 807th itiievskyi 🇺🇦 708 68 12ms 30 Jul 2020 807th dev-loop0 708 68 12ms 20 Aug 2020 807th linstr13 708 68 12ms 29 Sep 2020 807th mueller14003 708 68 12ms 8 Oct 2020 807th thisishowmymindworks 🇳🇴 708 68 47ms 14 Oct 2020 807th davidverweij 708 68 12ms 21 Oct 2020 807th martinsifrar 708 68 12ms 23 Oct 2020 807th KatieLG 🇬🇧 708 68 12ms 1 Nov 2020 807th Dazza314 🇬🇧 708 68 12ms 6 Nov 2020 807th austinrwarner 708 68 12ms 25 Dec 2020 807th Tess2662 708 68 12ms 11 Jan 2021 807th fynnkroeger 708 68 12ms 20 Jan 2021 807th ydevor 🇮🇱 708 68 13ms 22 Feb 2021 807th asadullayev 708 68 12ms 3 Mar 2021 807th orifu 708 68 12ms 19 Mar 2021 807th josephjojoe 708 68 12ms 19 Mar 2021 807th enbyte 708 68 12ms 21 May 2021 807th harrymwilkins 🇬🇧 708 68 12ms 18 Jul 2021 807th RYNO8 708 68 12ms 7 Aug 2021 807th ngocbd 🇻🇳 708 68 12ms 31 Aug 2021 807th potato-jackson 708 68 13ms 6 Sep 2021 807th ToE42 708 68 13ms 7 Sep 2021 807th ehulinsky 🇺🇸 708 68 12ms 16 Sep 2021 807th redbeancola 708 68 12ms 11 Oct 2021 807th walterfeyman 708 68 12ms 30 Oct 2021 807th xy3 🇮🇪 708 68 13ms 18 Nov 2021 807th sleepyStick 708 68 12ms 7 Dec 2021 807th akshatj27 🇦🇶 708 68 11ms 11 Jan 2022 807th Bonjour27891 🇻🇳 708 68 13ms 10 Feb 2022 807th LeeCamp 708 68 12ms 15 Feb 2022 807th SomeKitten 🇺🇸 708 68 12ms 20 Aug 2022 807th suwat513 708 68 12ms 23 Sep 2022 807th ValentinCassayre 708 68 12ms 9 Oct 2022 807th tpasfieldERAU 708 68 12ms 9 Nov 2022 807th Omega65536 🇩🇪 708 68 11ms 23 Nov 2022 807th jfallon1997 708 68 12ms 3 Jan 2023 807th Smoncko 708 68 13ms 1 Feb 2023 807th DragonaireM 708 68 11ms 6 Feb 2023 807th m3nt0ras 🇬🇷 708 68 12ms 16 Feb 2023 807th crispshaker 708 68 24ms 18 Mar 2023 807th MiranDaniel 🇨🇿 708 68 12ms 29 Apr 2023 807th sd3b 708 68 11ms 1 May 2023 807th ZoeyKD 708 68 12ms 14 May 2023 807th Ripick 708 68 12ms 22 May 2023 807th msbranicky 708 68 12ms 10 Jul 2023 807th cingulataluke 708 68 12ms 26 Aug 2023 807th bac0id 708 68 12ms 20 Sep 2023 807th Stockoh 🇫🇷 708 68 14ms 5 Nov 2023 807th keelimeguy 🇺🇸 708 68 13ms 6 Nov 2023 807th firegene 🇮🇪 708 68 12ms 24 Nov 2023 807th m42km 708 68 12ms 8 Dec 2023 807th zwxzwxzwx21 708 68 13ms 13 Dec 2023 807th epic-programmer-guy 708 68 12ms 17 Dec 2023 807th smokestacklightnin 🇺🇸 708 68 12ms 29 Dec 2023 807th Dataen 708 68 13ms 12 Jan 2024 807th scpchicken 🇵🇼 708 68 12ms 1 Feb 2024 807th Just4FunCoder 708 68 12ms 26 Feb 2024 First Prev 801–880 of 2,924 Next Last
