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?
Leap Years 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 864th ComputerKWasTaken 🇺🇸 606 71 15ms 6 Jun 2024 864th That1GuyWhoSucks 606 71 9ms 5 Oct 2024 864th s30153 606 71 17ms 15 May 2025 864th rollsroyce0 606 71 10ms 8 Jul 2025 864th AstroOrbis 606 71 17ms 22 Feb 2026 886th ingdanko 597 72 10ms 5 Feb 2019 886th chriscconte 597 72 10ms 16 Apr 2019 886th jwade109 597 72 17ms 17 Jul 2019 886th babulibaba 597 72 10ms 15 Aug 2019 886th Akilles1 597 72 10ms 9 Oct 2019 886th scottJsonar 597 72 9ms 29 Nov 2019 886th oAsAo 597 72 10ms 18 Jan 2020 886th ArturLange 597 72 12ms 17 Apr 2020 886th CharbelAD 597 72 10ms 16 Aug 2020 886th zax2002 597 72 16ms 7 Sep 2020 886th nico-bachner 597 72 10ms 5 Dec 2020 886th SchmulRosenzwe1g 597 72 9ms 15 Mar 2021 886th befoster 597 72 16ms 10 Apr 2021 886th ethandhunt 597 72 15ms 20 Jul 2021 886th tetraxile 597 72 10ms 3 Oct 2021 886th ellygaytor 597 72 14ms 2 Nov 2021 886th KingSkyrock 🇺🇸 597 72 17ms 28 Jan 2022 886th realicraft 597 72 9ms 21 Mar 2022 886th 104210 597 72 15ms 11 May 2022 886th nmgetahun 597 72 9ms 4 Dec 2022 886th arinhyther 597 72 17ms 25 Dec 2022 886th jdszekeres 597 72 15ms 19 Jun 2023 886th MisterrLuck 597 72 17ms 9 Sep 2023 886th therealnumbers 597 72 16ms 16 Nov 2023 886th RoscoeDaWah 🇬🇧 597 72 9ms 23 Nov 2023 886th PrathamMehta08 597 72 13ms 6 Dec 2023 886th dmitrijslasko 🇱🇻 597 72 10ms 31 Jan 2024 886th jstechman 597 72 10ms 25 Feb 2024 886th NoneTheFewer 597 72 15ms 17 May 2024 886th xyangst 597 72 16ms 5 Oct 2024 886th SURAJMITTAL 597 72 10ms 13 Dec 2024 886th atazzam 🇺🇸 597 72 16ms 23 Jan 2025 886th pastelglowcloud 597 72 10ms 2 Apr 2025 919th suhasbharadwaj 589 73 10ms 23 Jan 2019 919th egelmex 589 73 10ms 15 Nov 2019 919th roniapple 589 73 9ms 30 May 2020 919th DavideFarina96 589 73 10ms 2 Nov 2020 919th xenufo 589 73 10ms 15 Nov 2020 919th cole-wilson 589 73 16ms 3 Dec 2020 919th HalvorOverby 589 73 9ms 22 Dec 2021 919th reni-hristova 589 73 9ms 28 Jan 2022 919th MathieuIko 589 73 10ms 20 Feb 2022 919th jamespeilunli 589 73 16ms 1 May 2022 919th MiranDaniel 🇨🇿 589 73 31ms 1 May 2023 930th EmadAIsmael 581 74 10ms 16 Jan 2019 930th DietOlive 581 74 16ms 23 Jan 2019 930th potato-jackson 581 74 14ms 5 Mar 2021 930th janga1 581 74 10ms 12 Aug 2021 930th natehoffmaster112503 581 74 9ms 12 Sep 2021 930th bwat2 581 74 10ms 27 Dec 2021 930th HassanAliKadhem 🇧🇭 581 74 10ms 4 Jan 2022 930th dankleeman 581 74 9ms 8 Aug 2022 930th Feniske 🇫🇷 581 74 15ms 7 Oct 2022 930th PATTRIM 581 74 9ms 24 Dec 2022 930th hackstreetboi 581 74 12ms 3 Feb 2023 930th gbutler01 581 74 10ms 5 May 2023 930th Bergschaf 581 74 9ms 24 Dec 2023 930th jrbud 581 74 10ms 7 Jan 2024 930th vtilde 581 74 10ms 8 Mar 2024 945th pineapplehunter 573 75 9ms 13 May 2019 945th dddthedark 573 75 10ms 23 Jul 2019 945th reubengann 573 75 9ms 15 Feb 2020 945th Psirving 573 75 9ms 23 Jul 2020 945th aeonsablaze 573 75 10ms 22 Nov 2022 945th siddhantdube1 573 75 10ms 8 Oct 2023 945th XioR112 🇵🇱 573 75 19ms 19 Apr 2024 945th mattsoh 573 75 9ms 20 Jun 2024 945th KHezez 573 75 16ms 8 Jun 2025 945th ImCasuall 573 75 15ms 15 Jul 2025 945th Ledgehanger 573 75 10ms 24 Oct 2025 956th dahrens 566 76 10ms 4 Jul 2019 956th ashwinvis 566 76 10ms 20 Apr 2020 956th volpi-m 🇫🇷 566 76 17ms 31 Aug 2020 956th underscorelior 566 76 10ms 18 Sep 2021 956th ezhereshchin 566 76 10ms 1 May 2022 First Prev 881–960 of 1,123 Next Last
