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) Taxicab Numbers 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 Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic 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) Taxicab Numbers 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 Dragon Curve Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers Huffman Encoder NFA Simulator Nim Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 187th YAJUE114514 792 72 17ms 15 Aug 2025 187th madex 🇩🇪 792 72 25ms 15 Mar 2026 187th solisolu 792 72 19ms 19 days ago 204th AdamHe17 781 73 22ms 31 May 2022 204th AliceFord 781 73 20ms 2 Jun 2022 204th Natanaelel 🇸🇪 781 73 17ms 16 Jun 2022 204th marcin7Cd 781 73 20ms 27 Jun 2022 204th vhoulbreque 🇫🇷 781 73 22ms 18 Aug 2022 204th tkr-sh 🇰🇵 781 73 22ms 8 Sep 2022 204th jroscoe5 781 73 21ms 15 Sep 2022 204th OhmNomNom 781 73 26ms 7 Oct 2022 204th 0-4849 781 73 22ms 1 Nov 2022 204th M0PKOBKA 781 73 24ms 19 Dec 2022 204th calumacutt 781 73 25ms 19 Dec 2022 204th thehylian 781 73 23ms 2 Jan 2023 204th fynnkroeger 781 73 24ms 6 Jan 2023 204th hunt-g 781 73 20ms 4 Feb 2023 204th jmerle 🇳🇱 781 73 21ms 16 Feb 2023 204th TaserTheFox 🇺🇸 781 73 30ms 14 Mar 2023 204th pinguicula 781 73 20ms 6 Apr 2023 204th TheoKeller1 781 73 24ms 11 Jun 2023 204th eiburns 781 73 24ms 9 Oct 2023 204th htareque 781 73 25ms 13 Oct 2023 204th wearsunscreen 781 73 20ms 18 Oct 2023 204th Grrisly 781 73 20ms 10 Nov 2023 204th m42km 781 73 23ms 11 Nov 2023 204th GeneralPoxter 781 73 20ms 7 Dec 2023 204th logvp 781 73 26ms 12 Jan 2024 204th JoaoFelipe3 781 73 23ms 13 Jan 2024 204th ehulinsky 🇺🇸 781 73 20ms 16 Feb 2024 204th Lewenhaupt 781 73 20ms 23 Feb 2024 204th stertooy 🇧🇪 781 73 22ms 9 Jun 2024 204th jipsong 🇩🇪 781 73 21ms 23 Jul 2024 204th mattyhempstead 781 73 24ms 6 Oct 2024 204th wh3n3v3r 🇨🇿 781 73 20ms 18 Nov 2024 204th klixel 🇨🇦 781 73 21ms 18 Nov 2024 204th tjwrenn 781 73 22ms 10 Dec 2024 204th nullie 781 73 19ms 19 Dec 2024 204th maxgodfrey2004 🇨🇦 781 73 21ms 13 Feb 2025 204th andrewjc2000 781 73 21ms 23 Feb 2025 204th Bulmenisaurus 781 73 23ms 2 Mar 2025 204th souta-1326 781 73 31ms 1 Apr 2025 204th BenjaminHGong 781 73 21ms 26 May 2025 204th FEZfan 🇦🇺 781 73 23ms 11 Jul 2025 204th wuduculfre 781 73 21ms 28 Jul 2025 204th BREMAUCY 🇫🇷 781 73 21ms 24 Aug 2025 204th FortuiteMan 🇫🇷 781 73 21ms 28 Sep 2025 204th miaoaixuan 781 73 22ms 30 Sep 2025 204th Lv0Sys 🇵🇱 781 73 24ms 7 Dec 2025 204th zacharysfrazee 781 73 21ms 11 Jan 2026 204th bpharaldsson 781 73 22ms 6 Feb 2026 204th Zin9zan9 781 73 19ms 31 Mar 2026 204th Jakob-L-M 781 73 19ms 13 days ago 254th TobyBoyne 🇬🇧 770 74 20ms 4 May 2022 254th RDShah 770 74 21ms 6 May 2022 254th Indivicivet 770 74 21ms 9 May 2022 254th CedricGebistorf 770 74 20ms 9 May 2022 254th ophact 770 74 23ms 11 May 2022 254th ImpressedByRocks 770 74 20ms 17 May 2022 254th LHuitre 770 74 20ms 2 Jun 2022 254th neihousaigaai 770 74 18ms 8 Jun 2022 254th rowboat1 770 74 21ms 10 Jun 2022 254th inverseLorentz 🇦🇺 770 74 19ms 13 Jun 2022 254th clementblaudeau 770 74 24ms 29 Jun 2022 254th adoxography 770 74 19ms 13 Jul 2022 254th Attero 🇸🇪 770 74 21ms 20 Jul 2022 254th Heathcorp 🇦🇺 770 74 23ms 27 Jul 2022 254th jfallon1997 770 74 20ms 11 Aug 2022 254th VictorFordham 770 74 26ms 26 Aug 2022 254th georgehulme 770 74 20ms 1 Sep 2022 254th smartiel 770 74 21ms 15 Sep 2022 254th trist224 🇫🇷 770 74 19ms 21 Sep 2022 254th Kloppermand 🇩🇰 770 74 22ms 7 Oct 2022 254th knutae 🇳🇴 770 74 20ms 9 Oct 2022 254th Troon 770 74 20ms 14 Oct 2022 254th MaxElf999 770 74 21ms 14 Oct 2022 254th SniperSmiley 🇺🇸 770 74 20ms 6 Dec 2022 254th elephantpanda 770 74 21ms 10 Dec 2022 254th ArthurBond 770 74 21ms 19 Dec 2022 254th Larspolo 770 74 19ms 25 Dec 2022 254th dcc5480 770 74 19ms 12 Jan 2023 254th Ripick 770 74 20ms 1 Feb 2023 254th m3nt0ras 🇬🇷 770 74 21ms 3 Feb 2023 254th Skwerl23 770 74 20ms 5 Feb 2023 254th frankgraziano 770 74 19ms 19 Feb 2023 254th KenanHanke 770 74 23ms 21 Feb 2023 254th DanielPeterssonAI 770 74 19ms 13 Mar 2023 254th jiaminglimjm 🇲🇾 770 74 20ms 20 Mar 2023 254th ejini6969 770 74 20ms 22 Mar 2023 254th GulgDev 770 74 20ms 22 Mar 2023 254th vrnprkh 770 74 21ms 30 Mar 2023 254th RuyiLi 770 74 20ms 1 Apr 2023 254th StardustGogeta 770 74 20ms 7 May 2023 254th zbreit 🇺🇸 770 74 20ms 7 May 2023 254th kyleclaassen 770 74 21ms 20 May 2023 254th mbittner20 770 74 20ms 27 May 2023 254th tweska 🇳🇱 770 74 19ms 5 Jun 2023 254th cros107 🇦🇺 770 74 19ms 11 Aug 2023 254th yourlefthandman 770 74 21ms 16 Aug 2023 254th daisyyedda 770 74 20ms 17 Aug 2023 First Prev 201–300 of 853 Next Last