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 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 Continued Fractions 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 Continued Fractions 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 Chars Time Submitted 74th fkantelberg 905 63 20ms 14 Jul 2023 74th snoozingnewt 🇺🇸 905 63 35ms 10 Sep 2023 74th VictorStenvers 🇳🇱 905 63 22ms 13 Nov 2023 74th 1231234md5 🇨🇳 905 63 21ms 14 Dec 2023 74th f-tucker 905 63 22ms 6 Feb 2024 74th JunkIce 905 63 22ms 24 Nov 2024 74th Kowalskiexe 🇵🇱 905 63 21ms 19 Apr 2025 74th 123mjb 905 63 22ms 2 Jun 2025 74th DrakeSeteraO 905 63 51ms 24 Oct 2025 85th NerdyMcNerd42 891 64 19ms 26 Oct 2022 85th tpasfieldERAU 891 64 23ms 14 Nov 2022 85th CheeseCake628 🇳🇴 891 64 23ms 6 Jan 2023 85th adamnielson42 🇺🇸 891 64 23ms 25 Apr 2023 85th nathsou 🇫🇷 891 64 19ms 2 Sep 2023 85th zwxzwxzwx21 891 64 23ms 30 Jan 2024 85th steffan-polygolf 891 64 26ms 8 Mar 2024 85th Jacob385 891 64 57ms 4 Apr 2024 85th gallium-gonzollium 891 64 25ms 26 Aug 2024 94th yzhs 🇩🇪 877 65 20ms 16 Jun 2022 94th rollershutter 877 65 25ms 9 Sep 2022 94th bac0id 877 65 19ms 26 Sep 2023 94th mossiegoat 877 65 22ms 8 Jun 2025 94th RaBa21 🇭🇺 877 65 39ms 11 Jul 2025 94th TransformLikeATensor 877 65 20ms 17 Oct 2025 100th moustave 851 67 22ms 7 Nov 2024 101st Bubbler-4 838 68 16ms 15 Nov 2022 101st neel11235813 838 68 24ms 31 Dec 2022 101st Rubiksmath 838 68 15ms 14 Aug 2023 101st SB-945 838 68 24ms 7 Feb 2024 105th nwellnhof 🇩🇪 826 69 22ms 4 May 2022 105th GolfingSuccess 🇬🇷 826 69 16ms 5 May 2022 105th jared-hughes 826 69 34ms 5 May 2022 105th sisyphus-ppcg 🇦🇺 826 69 15ms 6 May 2022 105th lynn 826 69 17ms 22 Aug 2022 105th AlexanderFair 826 69 24ms 19 Jul 2023 105th AlephSquirrel 826 69 14ms 30 Dec 2023 105th davecame 826 69 25ms 20 Aug 2024 105th salvatore-abello 826 69 20ms 5 Sep 2024 105th zacjl 826 69 17ms 19 Sep 2024 105th kops-cg 826 69 22ms 9 Feb 2025 105th 4atj 826 69 3,399ms 30 Jun 2025 105th dirckvdende 826 69 16ms 11 Jul 2025 105th xnor-gate 826 69 26ms 19 Aug 2025 105th BrunoVisnadi 🇧🇷 826 69 16ms 1 Oct 2025 105th bizy-coder 826 69 16ms 3 days ago 121st MichalMarsalek 🇨🇿 814 70 18ms 5 May 2022 121st primo-ppcg 🇹🇭 814 70 23ms 5 May 2022 121st prplz 🇦🇺 814 70 18ms 5 May 2022 121st rak1507 🇬🇧 814 70 20ms 7 May 2022 121st inventshah 814 70 16ms 9 May 2022 121st k3w1k0d3r 814 70 19ms 22 Jun 2022 121st Bonjour27891 🇻🇳 814 70 19ms 14 Jul 2022 121st OllieBoyne 🇬🇧 814 70 19ms 19 Jul 2022 121st bricknellj 814 70 17ms 25 Jul 2022 121st wen1now 814 70 21ms 8 Aug 2022 121st 051 🇸🇬 814 70 23ms 8 Aug 2022 121st Sp3000 🇦🇺 814 70 25ms 8 Aug 2022 121st betaveros 814 70 18ms 9 Aug 2022 121st shelerr 814 70 20ms 9 Sep 2022 121st stewSquared 🇺🇸 814 70 30ms 27 Sep 2022 121st myfatemi04 814 70 18ms 4 Nov 2022 121st kevinmchung 814 70 19ms 4 Nov 2022 121st fourth-bit 814 70 21ms 29 Nov 2022 121st aksyristos 814 70 31ms 25 Dec 2022 121st thizanne 814 70 19ms 27 Dec 2022 121st stefangimmillaro 814 70 20ms 6 Feb 2023 121st Seek64 🇩🇪 814 70 17ms 7 Feb 2023 121st FieryIceStickie 814 70 19ms 3 Apr 2023 121st MeWhenI 🇻🇦 814 70 18ms 30 Apr 2023 121st kellantech 814 70 22ms 15 May 2023 121st InigoK 🇺🇸 814 70 18ms 14 Jun 2023 121st quimey 814 70 16ms 15 Jun 2023 121st janbehrens 🇩🇪 814 70 19ms 24 Nov 2023 121st namelessiw 814 70 19ms 9 Jan 2024 121st mathisfun271 814 70 18ms 13 Feb 2024 First Prev 76–150 of 805 Next Last