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 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 319th aonkeeper4 664 110 10ms 27 Sep 2022 319th CatsAreFluffy 664 110 10ms 5 Feb 2023 319th Wildst 664 110 18ms 7 Jul 2023 319th mstang107 664 110 10ms 20 Dec 2023 319th smokestacklightnin 🇺🇸 664 110 16ms 23 Feb 2024 319th kejcao 🇨🇦 664 110 10ms 10 May 2024 319th CutSandstone 664 110 10ms 2 Jul 2024 319th jasonxue1 664 110 17ms 8 Aug 2025 319th Andre3582 664 110 10ms 8 Oct 2025 319th ethanlchristensen 664 110 11ms 18 Oct 2025 331st face0xff 658 111 10ms 3 Nov 2021 331st lzahray 658 111 10ms 22 Oct 2022 331st jameswmccarty 658 111 16ms 10 Jul 2024 331st gthayden23 658 111 10ms 4 Oct 2024 331st wh3n3v3r 🇨🇿 658 111 9ms 11 Nov 2024 336th yzhs 🇩🇪 652 112 10ms 5 Nov 2021 336th Anonymousellama21 652 112 11ms 9 Dec 2021 336th shibacho 🇯🇵 652 112 17ms 17 Dec 2021 336th Drew-j-Smith 652 112 10ms 4 Jun 2022 336th eddvrs 652 112 10ms 21 Aug 2022 336th Yareeeema 652 112 16ms 29 Sep 2022 336th Marthe-CC 652 112 11ms 16 Oct 2022 336th Programmer-Arvind 652 112 10ms 9 Dec 2023 336th tobyLovick 652 112 10ms 26 Dec 2023 336th Masttest 652 112 18ms 31 Jan 2024 336th davecame 652 112 10ms 28 Feb 2024 336th PurkkaKoodari 🇫🇮 652 112 10ms 23 Nov 2024 336th lelbal 652 112 18ms 24 hours ago 349th WilliamKeating 646 113 18ms 14 Jan 2022 349th Pena86 646 113 10ms 18 Jan 2022 349th martinnorling 🇸🇪 646 113 10ms 20 Apr 2022 349th hjcafaroUC 646 113 11ms 25 Aug 2022 349th retrohun 646 113 14ms 3 Jan 2023 349th shersch 646 113 17ms 21 Jan 2023 349th Hebelub 646 113 10ms 5 Jan 2024 349th jayadithya-v 646 113 17ms 6 Jan 2024 349th ei14 646 113 10ms 23 May 2024 349th Apfelvater 646 113 11ms 21 days ago 359th Arridian 640 114 10ms 10 Oct 2021 359th BrenSchaap 640 114 10ms 22 Oct 2021 359th sleepyStick 640 114 19ms 11 Mar 2022 359th S-Ruban 640 114 11ms 25 Feb 2023 359th dranjohn 640 114 11ms 10 Sep 2023 359th christensendaniel 640 114 10ms 14 May 2024 359th mishak-sys 640 114 10ms 13 Mar 2025 366th tnecio 635 115 10ms 8 Oct 2021 366th mhsaul 635 115 10ms 10 Apr 2023 366th ComputerKWasTaken 🇺🇸 635 115 10ms 9 Jun 2024 366th MamoonUddin 635 115 10ms 3 Dec 2024 370th glesnick 629 116 10ms 6 Sep 2022 370th Ripick 629 116 10ms 29 Jan 2023 370th mbittner20 629 116 10ms 27 May 2023 370th midnattssol 🇸🇪 629 116 10ms 27 Jul 2023 370th cmccandless 629 116 12ms 16 Oct 2023 370th henrydukepickle 629 116 10ms 4 Dec 2023 370th robin-scragg 629 116 10ms 27 Jul 2025 377th Omega65536 🇩🇪 624 117 10ms 23 Nov 2022 377th inverseLorentz 🇦🇺 624 117 16ms 22 Apr 2024 379th dtaylor0 619 118 17ms 28 Apr 2023 379th codingisgreatbutiamnot 619 118 9ms 14 Aug 2024 381st ankeetparikh 613 119 11ms 5 May 2023 381st willdaspit 613 119 17ms 5 Aug 2023 381st PyryL 🇫🇮 613 119 10ms 23 Aug 2024 384th elephantpanda 608 120 10ms 10 Aug 2022 384th jfallon1997 608 120 16ms 16 Aug 2022 384th jroscoe5 608 120 11ms 5 Aug 2023 384th HunterC14 608 120 11ms 17 Nov 2025 384th kitotch 608 120 12ms 6 days ago 389th Indivicivet 603 121 29ms 22 Oct 2021 389th cafehaine 🇫🇷 603 121 16ms 23 May 2022 389th shacharrr 603 121 10ms 22 Dec 2022 389th Igyeom 🇰🇷 603 121 11ms 6 Jun 2023 389th Stockoh 🇫🇷 603 121 10ms 5 Nov 2023 389th SodiumFluoride 603 121 11ms 4 Dec 2023 389th UriyaBA 603 121 11ms 6 Dec 2023 389th epic-programmer-guy 603 121 10ms 31 Dec 2023 389th DavidVadnais 603 121 10ms 13 Feb 2024 389th Mathrew2012 603 121 9ms 15 Aug 2024 399th Amheus 598 122 18ms 7 Oct 2023 399th dtbao20 🇻🇳 598 122 14ms 1 Oct 2024 First Prev 321–400 of 573 Next Last
