Collatz in Python in chars. 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 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 United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Trinomial Triangle 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 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 United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 436th taesungh 722 79 7 Jun 2025 436th benvreeves 722 79 25 Jul 2025 436th saturzay 722 79 19 Aug 2025 454th j-Ewan 713 80 13 May 2022 454th osmith93 713 80 14 Jun 2022 454th hjcafaroUC 713 80 21 Jun 2022 454th dankleeman 713 80 8 Aug 2022 454th dillon-duncando 713 80 4 Oct 2022 454th DrPiranoid 713 80 11 Nov 2022 454th mdnestor 713 80 23 Dec 2022 454th Edjyzod 713 80 7 Mar 2023 454th henry-von-wichert 713 80 31 Mar 2023 454th Hortaros 713 80 16 Apr 2023 454th ankeetparikh 713 80 5 May 2023 454th Neonader 713 80 9 May 2023 454th nickgza 713 80 17 Aug 2023 454th MiranDaniel 🇨🇿 713 80 30 Aug 2023 454th Fanrco 713 80 31 Aug 2023 454th nyoshe 713 80 10 Oct 2023 454th AzroyAr 713 80 28 Dec 2023 454th Alex-Huggett 🇬🇧 713 80 13 Apr 2024 454th RobertHoeh 713 80 27 May 2024 454th LorenzoDeGaspari 713 80 27 May 2024 454th AstroOrbis 713 80 7 May 2025 454th vgamula 🇺🇦 713 80 16 Jul 2025 454th imoxyg 713 80 29 Aug 2025 477th abba23 704 81 26 May 2022 477th docd 704 81 8 Aug 2022 477th Smetalo 704 81 25 Aug 2022 477th glesnick 704 81 6 Sep 2022 477th Yareeeema 704 81 3 Nov 2022 477th RandGuy 704 81 23 Nov 2022 477th GWStuart 704 81 19 Dec 2022 477th wa1ker38552 704 81 22 May 2023 477th LimaoC 704 81 11 Aug 2023 477th robertovers 704 81 2 Oct 2023 477th HanaEndUser 704 81 15 Feb 2024 477th Loag 704 81 22 Sep 2024 477th julian-hoelz 704 81 23 Sep 2024 477th JesseNoEyes 🇺🇸 704 81 4 Oct 2024 477th GoldStar184 704 81 27 Nov 2024 477th ihatethefrench 704 81 5 Jan 2025 477th csharpython 704 81 2 Aug 2025 494th Ailko 🇧🇪 695 82 12 May 2022 494th joshmoody24 695 82 12 May 2022 494th andrewgopher 695 82 25 Jun 2022 494th estomagordo 🇳🇱 695 82 26 Oct 2022 494th ThatAlo 695 82 14 Nov 2022 494th twocatsinatrenchcoat 695 82 29 Nov 2022 494th aid-f 695 82 21 Mar 2023 494th nooby31415 695 82 3 Nov 2023 494th henrydukepickle 695 82 8 Dec 2023 494th amollberg 🇸🇪 695 82 3 Jan 2024 494th mrmena 🇦🇺 695 82 19 Mar 2024 494th rifatx 695 82 16 Jul 2024 494th NicoH76 695 82 24 Apr 2025 494th 0dyse 695 82 29 Apr 2025 494th some-function 695 82 2 Jul 2025 509th bonevbs 687 83 8 May 2022 509th feherd 687 83 20 May 2022 509th pbleich 687 83 24 Aug 2022 509th RoscoeSmith 687 83 20 Nov 2022 509th amadeusdotpng 687 83 22 Apr 2023 509th ross-i 687 83 5 Jul 2023 509th anonymaew 687 83 2 Aug 2023 509th mstang107 687 83 20 Dec 2023 509th LHLaurini 🇧🇷 687 83 26 Jun 2024 509th C0derX3 🇺🇸 687 83 18 Sep 2024 509th ComputerKWasTaken 🇺🇸 687 83 20 Jan 2025 509th Vexxter9 🇳🇱 687 83 4 Feb 2025 509th CodyKlingler 687 83 7 Feb 2025 509th OyuDays 687 83 17 Mar 2025 509th julianreece 687 83 29 Apr 2025 524th Feniske 🇫🇷 679 84 7 Oct 2022 524th Eilonlif 🇮🇱 679 84 29 Mar 2023 Prev 451–525 of 778 Next