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 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 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 Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel 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 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 ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel 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 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 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 Multitap Input NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Chars Time Submitted 435th cyxv 731 78 24ms 2 Aug 2024 435th Europe2048 731 78 19ms 24 Nov 2024 435th GeneralFabian 731 78 25ms 14 Dec 2024 454th kevdah 722 79 24ms 27 May 2022 454th jacklynnepenick 722 79 17ms 22 Jun 2022 454th james-downey 722 79 25ms 9 Jul 2022 454th andre-lameirinhas 🇵🇹 722 79 22ms 26 Jul 2022 454th hamsterskywalker 722 79 19ms 7 Sep 2022 454th Pena86 722 79 25ms 14 Sep 2022 454th hymanimy 722 79 26ms 24 Nov 2022 454th Demonarchet 722 79 19ms 18 Apr 2023 454th dtaylor0 722 79 20ms 23 May 2023 454th neonchickens 722 79 25ms 6 Oct 2023 454th MWI-polygolf 722 79 19ms 6 Dec 2023 454th eddvrs 722 79 22ms 22 Dec 2023 454th tknight00 722 79 26ms 7 Mar 2024 454th thienudomsrirungruang 722 79 44ms 3 May 2024 454th IsaacAlexBarden 722 79 23ms 6 Feb 2025 454th taesungh 722 79 24ms 7 Jun 2025 454th benvreeves 722 79 20ms 25 Jul 2025 454th saturzay 722 79 25ms 19 Aug 2025 454th tomh1012 722 79 23ms 13 days ago 473rd j-Ewan 713 80 20ms 13 May 2022 473rd osmith93 713 80 32ms 14 Jun 2022 473rd hjcafaroUC 713 80 25ms 21 Jun 2022 473rd dankleeman 713 80 20ms 8 Aug 2022 473rd dillon-duncando 713 80 24ms 4 Oct 2022 473rd DrPiranoid 713 80 22ms 11 Nov 2022 473rd mdnestor 713 80 23ms 23 Dec 2022 473rd Edjyzod 713 80 16ms 7 Mar 2023 473rd henry-von-wichert 713 80 24ms 31 Mar 2023 473rd Hortaros 713 80 22ms 16 Apr 2023 473rd ankeetparikh 713 80 18ms 5 May 2023 473rd Neonader 713 80 25ms 9 May 2023 473rd nickgza 713 80 16ms 17 Aug 2023 473rd MiranDaniel 🇨🇿 713 80 25ms 30 Aug 2023 473rd Fanrco 713 80 17ms 31 Aug 2023 473rd nyoshe 713 80 19ms 10 Oct 2023 473rd AzroyAr 713 80 26ms 28 Dec 2023 473rd Alex-Huggett 🇬🇧 713 80 56ms 13 Apr 2024 473rd RobertHoeh 713 80 27ms 27 May 2024 473rd LorenzoDeGaspari 713 80 23ms 27 May 2024 473rd AstroOrbis 713 80 25ms 7 May 2025 473rd vgamula 🇺🇦 713 80 23ms 16 Jul 2025 473rd imoxyg 713 80 23ms 29 Aug 2025 473rd Tristanchaang 713 80 21ms 13 Nov 2025 497th abba23 704 81 25ms 26 May 2022 497th docd 704 81 20ms 8 Aug 2022 497th Smetalo 704 81 24ms 25 Aug 2022 497th glesnick 704 81 22ms 6 Sep 2022 497th Yareeeema 704 81 27ms 3 Nov 2022 497th RandGuy 704 81 25ms 23 Nov 2022 497th GWStuart 704 81 25ms 19 Dec 2022 497th wa1ker38552 704 81 20ms 22 May 2023 497th LimaoC 704 81 22ms 11 Aug 2023 497th robertovers 704 81 22ms 2 Oct 2023 497th HanaEndUser 704 81 18ms 15 Feb 2024 497th Loag 704 81 17ms 22 Sep 2024 497th julian-hoelz 704 81 17ms 23 Sep 2024 497th JesseNoEyes 🇺🇸 704 81 19ms 4 Oct 2024 497th GoldStar184 704 81 23ms 27 Nov 2024 497th ihatethefrench 704 81 22ms 5 Jan 2025 497th csharpython 704 81 17ms 2 Aug 2025 514th Ailko 🇧🇪 695 82 24ms 12 May 2022 514th joshmoody24 695 82 25ms 12 May 2022 514th andrewgopher 695 82 18ms 25 Jun 2022 514th estomagordo 🇳🇱 695 82 23ms 26 Oct 2022 514th ThatAlo 695 82 23ms 14 Nov 2022 514th twocatsinatrenchcoat 695 82 18ms 29 Nov 2022 514th aid-f 695 82 23ms 21 Mar 2023 514th nooby31415 695 82 19ms 3 Nov 2023 514th henrydukepickle 695 82 18ms 8 Dec 2023 514th amollberg 🇸🇪 695 82 22ms 3 Jan 2024 514th mrmena 🇦🇺 695 82 27ms 19 Mar 2024 514th rifatx 695 82 24ms 16 Jul 2024 First Prev 451–525 of 810 Next Last