Collatz in Python in bytes. 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 Bytes Time 350th tpasfieldERAU 895 76 18 May 2024 350th khavik 895 76 29 May 2024 350th Ythaenagor 895 76 5 Aug 2024 350th martion2007 895 76 9 Aug 2024 350th sjrct 895 76 10 Aug 2024 350th Mathrew2012 895 76 9 Nov 2024 350th kawrei 895 76 4 May 2025 350th RaBa21 🇭🇺 895 76 19 Jul 2025 384th cooljoseph1 883 77 6 May 2022 384th krcs 🇵🇱 883 77 11 May 2022 384th kenballus 883 77 13 Jul 2022 384th 104210 883 77 29 Jul 2022 384th andre-de-lorde 883 77 1 Sep 2022 384th zstephe 883 77 2 Dec 2022 384th badboj40 883 77 27 Dec 2022 384th henrytranter 883 77 11 Jan 2023 384th DragonaireM 883 77 6 Feb 2023 384th steffan-polygolf 883 77 19 Feb 2023 384th kellantech 883 77 21 May 2023 384th Ty-Cyr 883 77 14 Jul 2023 384th camieac 🇬🇧 883 77 14 Jul 2023 384th nathsou 🇫🇷 883 77 2 Sep 2023 384th MisterrLuck 883 77 7 Sep 2023 384th alexjurkiewicz 🇦🇺 883 77 7 Nov 2023 384th askipio 883 77 22 Nov 2023 384th trinityy-7 883 77 17 Dec 2023 384th zwxzwxzwx21 883 77 30 Jan 2024 384th PyryL 🇫🇮 883 77 23 Aug 2024 384th CyberTapir 883 77 27 Aug 2024 384th junten1 883 77 20 Oct 2024 384th croc54 883 77 24 Dec 2024 384th za3k 883 77 3 Jun 2025 384th mossiegoat 883 77 17 Aug 2025 409th AGoyet 872 78 29 Jul 2022 409th RYNO8 872 78 16 Aug 2022 409th TheCod-r 🇦🇶 872 78 28 Sep 2022 409th Marthe-CC 872 78 9 Oct 2022 409th Wildst 872 78 2 Nov 2022 409th nmgetahun 872 78 4 Dec 2022 409th Techdude01 872 78 13 Dec 2022 409th tvcv901 872 78 22 Mar 2023 409th oceko 872 78 24 Mar 2023 409th yoyoyonono 872 78 15 May 2023 409th Nic0M 872 78 13 Aug 2023 409th ssbhatt4321 872 78 14 Oct 2023 409th wyarde 872 78 7 Nov 2023 409th EthanJ-Brady 872 78 24 Dec 2023 409th adamreidsmith 872 78 16 Feb 2024 409th Jacob385 872 78 5 Mar 2024 409th DGipe 872 78 13 May 2024 409th cyxv 872 78 2 Aug 2024 409th gallium-gonzollium 872 78 26 Aug 2024 409th Europe2048 872 78 24 Nov 2024 409th GeneralFabian 872 78 14 Dec 2024 430th kevdah 861 79 27 May 2022 430th jacklynnepenick 861 79 22 Jun 2022 430th james-downey 861 79 9 Jul 2022 430th andre-lameirinhas 🇵🇹 861 79 26 Jul 2022 430th hamsterskywalker 861 79 7 Sep 2022 430th Pena86 861 79 14 Sep 2022 430th hymanimy 861 79 24 Nov 2022 430th Demonarchet 861 79 18 Apr 2023 430th dtaylor0 861 79 23 May 2023 430th bac0id 861 79 26 Sep 2023 430th neonchickens 861 79 6 Oct 2023 430th MWI-polygolf 861 79 6 Dec 2023 430th eddvrs 861 79 22 Dec 2023 430th tknight00 861 79 7 Mar 2024 430th thienudomsrirungruang 861 79 3 May 2024 430th IsaacAlexBarden 861 79 6 Feb 2025 430th taesungh 861 79 7 Jun 2025 430th benvreeves 861 79 25 Jul 2025 430th saturzay 861 79 19 Aug 2025 449th j-Ewan 850 80 13 May 2022 449th osmith93 850 80 14 Jun 2022 Prev 376–450 of 779 Next