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 1st khvdm 1,000 63 2,480ms 22 hours ago 2nd JayXon 🇺🇸 940 67 2,389ms 15 hours ago 3rd Lydxn 🇨🇦 926 68 437ms 5 May 2022 3rd GrayJoKing 🇦🇺 926 68 15ms 15 Nov 2022 3rd Bubbler-4 926 68 15ms 15 Nov 2022 3rd Rubiksmath 926 68 15ms 14 Aug 2023 7th nwellnhof 🇩🇪 913 69 22ms 4 May 2022 7th m-tkach 🇺🇦 913 69 18ms 4 May 2022 7th GolfingSuccess 🇬🇷 913 69 16ms 5 May 2022 7th jared-hughes 913 69 34ms 5 May 2022 7th ovs-code 🇩🇪 913 69 22ms 5 May 2022 7th btnlq 913 69 16ms 5 May 2022 7th sisyphus-ppcg 🇦🇺 913 69 15ms 6 May 2022 7th lynn 913 69 17ms 22 Aug 2022 7th Steffan153 🇫🇮 913 69 18ms 15 Nov 2022 7th AlexanderFair 913 69 24ms 19 Jul 2023 7th pardouin 🇫🇷 913 69 16ms 11 Nov 2023 7th AlephSquirrel 913 69 16ms 30 Dec 2023 7th kg583 🇺🇸 913 69 16ms 28 Jan 2024 7th davecame 913 69 25ms 20 Aug 2024 7th zacjl 913 69 17ms 19 Sep 2024 7th starfihs 913 69 16ms 12 Oct 2024 7th kops-cg 913 69 22ms 9 Feb 2025 7th sean-niemann 🇺🇸 913 69 17ms 7 Mar 2025 7th plcc0 913 69 15ms 26 Mar 2025 7th yujh-yujh 🇬🇸 913 69 57ms 28 Mar 2025 7th moustave 913 69 17ms 10 Jun 2025 7th 4atj 913 69 3,399ms 30 Jun 2025 7th dirckvdende 913 69 16ms 11 Jul 2025 7th xnor-gate 913 69 26ms 19 Aug 2025 7th BrunoVisnadi 🇧🇷 913 69 16ms 1 Oct 2025 7th Mukundan314 913 69 18ms 3 days ago 33rd MichalMarsalek 🇨🇿 900 70 19ms 5 May 2022 33rd primo-ppcg 🇹🇭 900 70 23ms 5 May 2022 33rd SirBogman 🇺🇸 900 70 29ms 5 May 2022 33rd prplz 🇦🇺 900 70 18ms 5 May 2022 33rd Irratix 🇳🇱 900 70 16ms 7 May 2022 33rd rak1507 🇬🇧 900 70 20ms 7 May 2022 33rd inventshah 900 70 16ms 9 May 2022 33rd k3w1k0d3r 900 70 19ms 22 Jun 2022 33rd ZakkkkAttackkkk 🇵🇭 900 70 16ms 14 Jul 2022 33rd Bonjour27891 🇻🇳 900 70 19ms 14 Jul 2022 33rd OllieBoyne 🇬🇧 900 70 19ms 19 Jul 2022 33rd bricknellj 900 70 21ms 25 Jul 2022 33rd wen1now 900 70 21ms 8 Aug 2022 33rd 051 🇸🇬 900 70 23ms 8 Aug 2022 33rd Sp3000 🇦🇺 900 70 25ms 8 Aug 2022 33rd betaveros 900 70 18ms 9 Aug 2022 33rd shelerr 900 70 20ms 9 Sep 2022 33rd stewSquared 🇺🇸 900 70 30ms 27 Sep 2022 33rd orthoplex 🇨🇽 900 70 24ms 9 Oct 2022 33rd 5quiwyrm 900 70 21ms 19 Oct 2022 33rd myfatemi04 900 70 18ms 4 Nov 2022 33rd kevinmchung 900 70 19ms 4 Nov 2022 33rd FlorianCassayre 🇫🇷 900 70 19ms 7 Nov 2022 33rd fourth-bit 900 70 21ms 29 Nov 2022 33rd QuincyNash 🇺🇸 900 70 19ms 29 Nov 2022 33rd aksyristos 900 70 31ms 25 Dec 2022 33rd thizanne 900 70 19ms 27 Dec 2022 33rd Alex-x90 🇺🇸 900 70 26ms 20 Jan 2023 33rd bob-th 900 70 20ms 24 Jan 2023 33rd SirFireball3521 900 70 19ms 25 Jan 2023 33rd stefangimmillaro 900 70 20ms 6 Feb 2023 33rd Seek64 🇩🇪 900 70 18ms 7 Feb 2023 33rd FieryIceStickie 900 70 19ms 3 Apr 2023 33rd MeWhenI 🇻🇦 900 70 18ms 30 Apr 2023 33rd fgrosshans 🇫🇷 900 70 20ms 5 May 2023 33rd Shanethegamer 🇺🇸 900 70 21ms 25 May 2023 33rd InigoK 🇺🇸 900 70 18ms 14 Jun 2023 33rd quimey 900 70 16ms 15 Jun 2023 33rd CornerMercury 🇬🇧 900 70 20ms 19 Jun 2023 33rd ndren 900 70 19ms 2 Aug 2023 33rd bizy-coder 900 70 22ms 14 Aug 2023 33rd janbehrens 🇩🇪 900 70 19ms 24 Nov 2023 33rd namelessiw 900 70 19ms 9 Jan 2024 1–75 of 801 Next Last