Collatz in Python in chars. 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 Gray Code Decoder Gray Code Encoder 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 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 Gray Code Decoder Gray Code Encoder 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 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 Chars Time Submitted 128th 5cw 🇺🇸 814 70 21ms 13 Jul 2024 128th lgrandco 814 70 18ms 9 Oct 2024 128th snydej 814 70 20ms 21 Nov 2024 128th erikji 814 70 20ms 4 Feb 2025 128th CutSandstone 814 70 19ms 4 Feb 2025 128th xsot 🇸🇬 814 70 22ms 3 May 2025 128th smilesformiles3 814 70 21ms 14 Jun 2025 128th KasperKivimaeki 🇫🇮 814 70 20ms 30 Jun 2025 128th adaGrad1 814 70 19ms 10 Aug 2025 128th EthanJantz 814 70 19ms 10 Aug 2025 128th qpwoeirut 814 70 16ms 10 Aug 2025 128th intgrah 814 70 20ms 23 Sep 2025 128th ryyyn 🇺🇸 814 70 19ms 29 Oct 2025 128th bzijlema 🇳🇱 814 70 20ms 3 Dec 2025 128th blaztoma 🇱🇹 814 70 21ms 16 Feb 2026 128th Googolplexo 🇷🇺 814 70 19ms 14 days ago 128th edsrzf 🇳🇿 814 70 21ms 2 days ago 128th Mikey-Beep 🇬🇧 814 70 20ms 4 hours ago 179th StefanHabel 🇨🇦 803 71 18ms 29 Nov 2022 179th nstearns96 🇬🇧 803 71 21ms 11 Jan 2023 179th lelbal 803 71 20ms 26 Aug 2025 179th HETHAT 🇩🇿 803 71 23ms 23 Sep 2025 179th 09cf 803 71 18ms 18 Nov 2025 179th CommandLeo 🇮🇹 803 71 23ms 8 Jan 2026 185th scpchicken 🇵🇼 792 72 20ms 4 May 2022 185th sultan 792 72 17ms 6 Jun 2022 185th BlankSpruce 792 72 24ms 9 Sep 2022 185th ValentinCassayre 792 72 21ms 8 Oct 2022 185th mathb0y512 792 72 22ms 1 Dec 2022 185th NoahBolohan 🇨🇦 792 72 22ms 28 Feb 2023 185th Kacarott 🇦🇺 792 72 16ms 24 Mar 2023 185th Fracture17 792 72 19ms 8 Apr 2023 185th ayushdewan 792 72 25ms 7 May 2023 185th cingulataluke 792 72 20ms 27 Aug 2023 185th PeterTillema 🇳🇱 792 72 25ms 17 Oct 2023 185th Glinte 792 72 24ms 11 Dec 2023 185th nanatsu8 792 72 25ms 11 May 2024 185th thej10n 792 72 20ms 12 Jun 2024 185th tobeannouncd 792 72 18ms 25 Apr 2025 185th YAJUE114514 792 72 17ms 15 Aug 2025 185th madex 🇩🇪 792 72 23ms 23 days ago 202nd AdamHe17 781 73 20ms 31 May 2022 202nd AliceFord 781 73 21ms 2 Jun 2022 202nd Natanaelel 🇸🇪 781 73 16ms 16 Jun 2022 202nd marcin7Cd 781 73 21ms 27 Jun 2022 202nd vhoulbreque 🇫🇷 781 73 20ms 18 Aug 2022 202nd tkr-sh 🇰🇵 781 73 20ms 8 Sep 2022 202nd jroscoe5 781 73 20ms 15 Sep 2022 202nd OhmNomNom 781 73 23ms 7 Oct 2022 202nd 0-4849 781 73 21ms 1 Nov 2022 202nd M0PKOBKA 781 73 24ms 19 Dec 2022 202nd calumacutt 781 73 24ms 19 Dec 2022 202nd thehylian 781 73 20ms 2 Jan 2023 202nd fynnkroeger 781 73 22ms 6 Jan 2023 202nd hunt-g 781 73 21ms 4 Feb 2023 202nd jmerle 🇳🇱 781 73 20ms 16 Feb 2023 202nd TaserTheFox 🇺🇸 781 73 20ms 14 Mar 2023 202nd pinguicula 781 73 21ms 6 Apr 2023 202nd TheoKeller1 781 73 24ms 11 Jun 2023 202nd eiburns 781 73 22ms 9 Oct 2023 202nd htareque 781 73 21ms 13 Oct 2023 202nd wearsunscreen 781 73 20ms 18 Oct 2023 202nd Grrisly 781 73 20ms 10 Nov 2023 202nd m42km 781 73 20ms 11 Nov 2023 202nd GeneralPoxter 781 73 20ms 7 Dec 2023 202nd logvp 781 73 24ms 12 Jan 2024 202nd JoaoFelipe3 781 73 22ms 13 Jan 2024 202nd ehulinsky 🇺🇸 781 73 21ms 16 Feb 2024 202nd Lewenhaupt 781 73 19ms 23 Feb 2024 202nd stertooy 🇧🇪 781 73 20ms 9 Jun 2024 202nd jipsong 🇩🇪 781 73 20ms 23 Jul 2024 202nd mattyhempstead 781 73 21ms 6 Oct 2024 202nd wh3n3v3r 🇨🇿 781 73 20ms 18 Nov 2024 202nd klixel 🇨🇦 781 73 20ms 18 Nov 2024 202nd tjwrenn 781 73 20ms 10 Dec 2024 202nd nullie 781 73 20ms 19 Dec 2024 202nd maxgodfrey2004 🇨🇦 781 73 21ms 13 Feb 2025 202nd andrewjc2000 781 73 21ms 23 Feb 2025 202nd Bulmenisaurus 781 73 23ms 2 Mar 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