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 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 Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Knight 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 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 Groovy Harbour Hare Haxe Hush Hy iogii Knight 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 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 Hilbert Curve Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 449th hjcafaroUC 713 80 21 Jun 2022 449th dankleeman 713 80 8 Aug 2022 449th dillon-duncando 713 80 4 Oct 2022 449th DrPiranoid 713 80 11 Nov 2022 449th mdnestor 713 80 23 Dec 2022 449th Edjyzod 713 80 7 Mar 2023 449th henry-von-wichert 713 80 31 Mar 2023 449th Hortaros 713 80 16 Apr 2023 449th ankeetparikh 713 80 5 May 2023 449th Neonader 713 80 9 May 2023 449th nickgza 713 80 17 Aug 2023 449th MiranDaniel 🇨🇿 713 80 30 Aug 2023 449th Fanrco 713 80 31 Aug 2023 449th nyoshe 713 80 10 Oct 2023 449th AzroyAr 713 80 28 Dec 2023 449th Alex-Huggett 🇬🇧 713 80 13 Apr 2024 449th RobertHoeh 713 80 27 May 2024 449th LorenzoDeGaspari 713 80 27 May 2024 449th AstroOrbis 713 80 7 May 2025 449th vgamula 🇺🇦 713 80 16 Jul 2025 471st abba23 704 81 26 May 2022 471st docd 704 81 8 Aug 2022 471st Smetalo 704 81 25 Aug 2022 471st glesnick 704 81 6 Sep 2022 471st Yareeeema 704 81 3 Nov 2022 471st RandGuy 704 81 23 Nov 2022 471st GWStuart 704 81 19 Dec 2022 471st wa1ker38552 704 81 22 May 2023 471st LimaoC 704 81 11 Aug 2023 471st robertovers 704 81 2 Oct 2023 471st HanaEndUser 704 81 15 Feb 2024 471st Loag 704 81 22 Sep 2024 471st julian-hoelz 704 81 23 Sep 2024 471st JesseNoEyes 🇺🇸 704 81 4 Oct 2024 471st GoldStar184 704 81 27 Nov 2024 471st ihatethefrench 704 81 5 Jan 2025 471st csharpython 704 81 21 days ago 488th Ailko 🇧🇪 695 82 12 May 2022 488th joshmoody24 695 82 12 May 2022 488th andrewgopher 695 82 25 Jun 2022 488th estomagordo 🇳🇱 695 82 26 Oct 2022 488th ThatAlo 695 82 14 Nov 2022 488th twocatsinatrenchcoat 695 82 29 Nov 2022 488th aid-f 695 82 21 Mar 2023 488th nooby31415 695 82 3 Nov 2023 488th henrydukepickle 695 82 8 Dec 2023 488th amollberg 🇸🇪 695 82 3 Jan 2024 488th mrmena 🇦🇺 695 82 19 Mar 2024 488th rifatx 695 82 16 Jul 2024 488th NicoH76 695 82 24 Apr 2025 488th 0dyse 695 82 29 Apr 2025 488th some-function 695 82 2 Jul 2025 503rd bonevbs 687 83 8 May 2022 503rd feherd 687 83 20 May 2022 503rd pbleich 687 83 24 Aug 2022 503rd RoscoeSmith 687 83 20 Nov 2022 503rd amadeusdotpng 687 83 22 Apr 2023 503rd ross-i 687 83 5 Jul 2023 503rd anonymaew 687 83 2 Aug 2023 503rd mstang107 687 83 20 Dec 2023 503rd LHLaurini 🇧🇷 687 83 26 Jun 2024 503rd C0derX3 🇺🇸 687 83 18 Sep 2024 503rd ComputerKWasTaken 🇺🇸 687 83 20 Jan 2025 503rd Vexxter9 🇳🇱 687 83 4 Feb 2025 503rd CodyKlingler 687 83 7 Feb 2025 503rd OyuDays 687 83 17 Mar 2025 503rd julianreece 687 83 29 Apr 2025 518th Feniske 🇫🇷 679 84 7 Oct 2022 518th Eilonlif 🇮🇱 679 84 29 Mar 2023 518th mhsaul 679 84 11 Apr 2023 518th Phyisis 679 84 30 Apr 2024 518th MaxCastella 🇫🇷 679 84 11 Oct 2024 518th SURAJMITTAL 679 84 17 Dec 2024 518th simplylu 679 84 5 Jan 2025 518th WillowWispy 679 84 14 Mar 2025 Prev 451–525 of 769 Next