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?
Fractions 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 718th 051 🇸🇬 762 93 18ms 6 Jan 2024 718th cros107 🇦🇺 762 93 16ms 27 Jun 2024 718th shellbertt 🇨🇦 762 93 17ms 23 Aug 2024 718th abhishekg999 762 93 17ms 21 Sep 2024 718th commandz0 🇺🇸 762 93 17ms 23 Mar 2025 718th FortuiteMan 🇫🇷 762 93 17ms 25 Jan 2026 718th SectorCorruptor 762 93 19ms 3 Feb 2026 728th Lydxn 🇨🇦 762 163 421ms 8 Sep 2021 728th primo-ppcg 🇹🇭 762 163 434ms 16 Sep 2021 730th Shanethegamer 🇺🇸 761 54 2ms 5 Nov 2022 731st Ocisaac 761 114 2ms 22 Mar 2024 731st LHLaurini 🇧🇷 761 114 2ms 3 Jul 2024 733rd revlayle 🇺🇸 761 137 417ms 21 Jun 2022 733rd stefangimmillaro 761 137 434ms 19 May 2024 733rd MeWhenI 🇻🇦 761 137 427ms 29 Dec 2025 736th voytxt 🇨🇿 761 307 1,489ms 26 Jan 2025 737th emgordon154 760 79 12ms 23 Nov 2021 737th Salutations45 760 79 11ms 30 Dec 2024 739th MeWhenI 🇻🇦 760 86 445ms 24 May 2024 740th albanian-laundromat 759 160 150ms 28 Nov 2025 741st nents 758 143 2,961ms 24 Jan 2025 742nd DialFrost 🇸🇬 757 64 62ms 10 Apr 2025 743rd jared-hughes 757 97 2ms 6 Apr 2022 743rd GrayJoKing 🇦🇺 757 97 2ms 10 Nov 2023 745th ScottHamper 755 138 397ms 19 Apr 2022 745th Shanethegamer 🇺🇸 755 138 405ms 16 Oct 2022 745th amazingalek 🇳🇴 755 138 428ms 5 Jan 2026 748th jmerle 🇳🇱 754 94 17ms 21 Jan 2022 748th jakobkordez 🇸🇮 754 94 32ms 24 Oct 2022 748th jeff-at-tamer-dot-codes 🇺🇸 754 94 17ms 12 Mar 2023 748th vgamula 🇺🇦 754 94 17ms 7 Nov 2023 748th SB-945 754 94 18ms 23 Jan 2024 748th agreegious 754 94 16ms 17 Nov 2024 748th keelimeguy 🇺🇸 754 94 33ms 17 May 2025 748th blaztoma 🇱🇹 754 94 16ms 18 Dec 2025 756th MeWhenI 🇻🇦 754 310 1,436ms 10 Feb 2025 757th Yewzir 🇧🇪 753 115 105ms 28 Mar 2024 758th neel11235813 751 87 392ms 27 Mar 2024 759th GolfingSuccess 🇬🇷 751 311 1,423ms 18 Jan 2025 760th Daniel-Ellison 750 65 272ms 9 Sep 2025 761st LukeBridges 🇬🇧 750 80 10ms 3 Nov 2022 761st a1exeysv 🇺🇦 750 80 10ms 15 Mar 2023 763rd ovs-code 🇩🇪 750 100 2ms 10 Jun 2024 763rd GolfingSuccess 🇬🇷 750 100 2ms 19 Dec 2024 765th LS2021 750 139 421ms 24 Nov 2023 766th bstrat 749 40 7ms 9 Jul 2024 767th lynn 748 49 33ms 3 Sep 2021 768th not-a-pokemon 748 116 1ms 5 Jul 2025 768th solisolu 748 116 1ms 10 Nov 2025 770th inventshah 747 55 2ms 26 Jan 2023 770th MaliPatuljak 747 55 3ms 19 Apr 2023 772nd 1231234md5 🇨🇳 747 145 2,830ms 10 Dec 2023 772nd LHLaurini 🇧🇷 747 145 450ms 3 Jul 2024 774th jared-hughes 746 95 16ms 4 Sep 2021 774th prplz 🇦🇺 746 95 17ms 1 Oct 2021 774th redbeancola 746 95 18ms 11 Oct 2021 774th Bonjour27891 🇻🇳 746 95 16ms 11 Mar 2022 774th AliceFord 746 95 17ms 4 Jun 2022 774th RDShah 746 95 17ms 12 Jun 2022 774th tri1212 🇻🇳 746 95 18ms 24 Aug 2022 774th FlorianCassayre 🇫🇷 746 95 17ms 30 Oct 2022 774th QuincyNash 🇺🇸 746 95 18ms 5 Dec 2022 774th scpchicken 🇵🇼 746 95 17ms 10 Jan 2023 774th aVitness 746 95 19ms 14 Jan 2023 774th randolchance 746 95 18ms 19 Jan 2023 774th CheeseCake628 🇳🇴 746 95 16ms 19 Jan 2023 774th 4ndyJ 🇬🇧 746 95 17ms 19 Jan 2023 774th TaserTheFox 🇺🇸 746 95 16ms 11 May 2023 774th janbehrens 🇩🇪 746 95 16ms 17 Jun 2023 774th fkantelberg 746 95 17ms 7 Aug 2023 774th Grrisly 746 95 16ms 25 Mar 2024 774th RobertHoeh 746 95 18ms 29 Apr 2024 774th NickTheEASDude 🇺🇸 746 95 16ms 17 May 2024 774th aaa123git 746 95 16ms 18 Jul 2024 774th Mabeloid 🇳🇴 746 95 17ms 8 Sep 2024 774th SirBogman 🇺🇸 746 95 16ms 14 Aug 2025 774th CommandLeo 🇮🇹 746 95 17ms 25 Nov 2025 774th Lv0Sys 🇵🇱 746 95 16ms 5 Dec 2025 774th Languag3 746 95 17ms 8 Dec 2025 774th zhaohm14 746 95 17ms 9 Jan 2026 First Prev 721–800 of 2,002 Next Last