Collatz in Python in bytes. Cheevos Holes Recent Holes Langs Medals Misc 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 Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz 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 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 Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Binary Lambda Calculus Calendar 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 Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz 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 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 Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Binary Lambda Calculus Calendar 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 Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 516th ComputerKWasTaken 🇺🇸 795 83 27ms 20 Jan 2025 516th Vexxter9 🇳🇱 795 83 71ms 4 Feb 2025 516th CodyKlingler 795 83 24ms 7 Feb 2025 516th OyuDays 795 83 19ms 17 Mar 2025 516th julianreece 795 83 22ms 29 Apr 2025 516th rustykitty 🇺🇸 795 83 20ms 20 days ago 532nd Feniske 🇫🇷 786 84 23ms 7 Oct 2022 532nd Eilonlif 🇮🇱 786 84 30ms 29 Mar 2023 532nd mhsaul 786 84 17ms 11 Apr 2023 532nd Phyisis 786 84 20ms 30 Apr 2024 532nd MaxCastella 🇫🇷 786 84 23ms 11 Oct 2024 532nd SURAJMITTAL 786 84 27ms 17 Dec 2024 532nd simplylu 786 84 20ms 5 Jan 2025 532nd WillowWispy 786 84 20ms 14 Mar 2025 532nd VedJosh 786 84 25ms 3 May 2025 532nd hetz2625 786 84 22ms 4 May 2025 542nd aazuspan 776 85 20ms 15 Jun 2022 542nd myleopard 776 85 22ms 20 Jul 2022 542nd LukasFolwarczny 🇨🇿 776 85 30ms 16 Sep 2022 542nd SB-945 776 85 25ms 7 Feb 2024 542nd aaardwark 776 85 23ms 1 Jun 2025 542nd kmathis22 776 85 20ms 10 Sep 2025 548th MichaelMBradley 🇨🇦 767 86 24ms 5 Jun 2022 548th Lemonz-13223 767 86 27ms 21 Sep 2022 548th Bodo171 767 86 24ms 24 Nov 2022 548th shibacho 🇯🇵 767 86 19ms 25 Nov 2022 548th Vaekor 767 86 21ms 9 Jul 2023 548th LeoVanderSteege 767 86 17ms 18 Nov 2023 548th Pale-Vessel 767 86 20ms 18 Dec 2023 548th tik25 767 86 25ms 28 Mar 2024 548th willschremmer 767 86 18ms 27 Apr 2024 548th jamiloBBKing 767 86 24ms 27 Jan 2025 548th AsishKunta 767 86 19ms 1 Apr 2025 548th Hemanthred2005 767 86 18ms 1 Apr 2025 548th Voltrifrodec 🇸🇰 767 86 23ms 19 Apr 2025 548th lurey99 767 86 26ms 23 Apr 2025 548th Alban-Boissard 767 86 24ms 14 Jun 2025 548th Arkadios200 767 86 26ms 21 Sep 2025 564th ToE42 759 87 19ms 19 Oct 2022 564th omri2001 759 87 18ms 19 Oct 2022 564th Skallos-s 759 87 23ms 5 Dec 2022 564th damoc1es 759 87 17ms 16 Apr 2023 564th michelebastione 🇮🇹 759 87 26ms 20 Dec 2023 564th clampcorder 759 87 16ms 24 Jan 2024 564th GitQuick 759 87 20ms 23 Feb 2024 564th EricSchraf 759 87 22ms 21 Mar 2024 564th salvatore-abello 759 87 22ms 5 Sep 2024 564th PotatoSaladOverlord 759 87 19ms 21 May 2025 564th Ibozz91 759 87 24ms 8 Jun 2025 575th Andre3582 750 88 21ms 29 Oct 2022 575th Darknova2468 750 88 21ms 20 Nov 2022 575th Solsticely 750 88 20ms 20 Nov 2022 575th goGuru 750 88 22ms 21 Dec 2022 575th msbranicky 750 88 36ms 9 Aug 2023 575th gussy420 750 88 19ms 28 Oct 2023 575th Shynif 750 88 19ms 21 Feb 2024 575th asterized 750 88 31ms 24 Aug 2024 575th hippopotam00sehead 🇨🇦 750 88 22ms 11 Sep 2024 575th 08jne01 750 88 19ms 21 Nov 2024 575th davidludwik2370 750 88 21ms 14 Sep 2025 586th lovernj 742 89 23ms 23 Aug 2022 586th Roj 742 89 21ms 20 Nov 2022 586th aeonsablaze 742 89 18ms 22 Nov 2022 586th buddyw 742 89 20ms 9 Mar 2023 586th VV1Git 742 89 22ms 28 Mar 2023 586th dranjohn 742 89 22ms 17 Sep 2023 586th ArenaGrenade 742 89 24ms 19 Feb 2024 586th NanduBC 742 89 22ms 6 Sep 2024 586th TheAtrossian 742 89 21ms 5 Jan 2025 586th KimJua41 742 89 19ms 4 May 2025 586th Upload-and-View 🇺🇦 742 89 16ms 20 Aug 2025 597th StoverGitHub 733 90 23ms 16 Jun 2022 597th jamespeilunli 733 90 25ms 4 Jul 2022 597th TrentGlimp 733 90 19ms 3 Sep 2022 597th Ugoran 733 90 26ms 19 Nov 2022 First Prev 526–600 of 798 Next Last