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 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 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 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 Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 451st j-Ewan 713 80 13 May 2022 451st osmith93 713 80 14 Jun 2022 451st hjcafaroUC 713 80 21 Jun 2022 451st dankleeman 713 80 8 Aug 2022 451st dillon-duncando 713 80 4 Oct 2022 451st DrPiranoid 713 80 11 Nov 2022 451st mdnestor 713 80 23 Dec 2022 451st Edjyzod 713 80 7 Mar 2023 451st henry-von-wichert 713 80 31 Mar 2023 451st Hortaros 713 80 16 Apr 2023 451st ankeetparikh 713 80 5 May 2023 451st Neonader 713 80 9 May 2023 451st nickgza 713 80 17 Aug 2023 451st MiranDaniel 🇨🇿 713 80 30 Aug 2023 451st Fanrco 713 80 31 Aug 2023 451st nyoshe 713 80 10 Oct 2023 451st AzroyAr 713 80 28 Dec 2023 451st Alex-Huggett 🇬🇧 713 80 13 Apr 2024 451st RobertHoeh 713 80 27 May 2024 451st LorenzoDeGaspari 713 80 27 May 2024 451st AstroOrbis 713 80 7 May 2025 451st vgamula 🇺🇦 713 80 16 Jul 2025 451st imoxyg 713 80 11 days ago 474th abba23 704 81 26 May 2022 474th docd 704 81 8 Aug 2022 474th Smetalo 704 81 25 Aug 2022 474th glesnick 704 81 6 Sep 2022 474th Yareeeema 704 81 3 Nov 2022 474th RandGuy 704 81 23 Nov 2022 474th GWStuart 704 81 19 Dec 2022 474th wa1ker38552 704 81 22 May 2023 474th LimaoC 704 81 11 Aug 2023 474th robertovers 704 81 2 Oct 2023 474th HanaEndUser 704 81 15 Feb 2024 474th Loag 704 81 22 Sep 2024 474th julian-hoelz 704 81 23 Sep 2024 474th JesseNoEyes 🇺🇸 704 81 4 Oct 2024 474th GoldStar184 704 81 27 Nov 2024 474th ihatethefrench 704 81 5 Jan 2025 474th csharpython 704 81 2 Aug 2025 491st Ailko 🇧🇪 695 82 12 May 2022 491st joshmoody24 695 82 12 May 2022 491st andrewgopher 695 82 25 Jun 2022 491st estomagordo 🇳🇱 695 82 26 Oct 2022 491st ThatAlo 695 82 14 Nov 2022 491st twocatsinatrenchcoat 695 82 29 Nov 2022 491st aid-f 695 82 21 Mar 2023 491st nooby31415 695 82 3 Nov 2023 491st henrydukepickle 695 82 8 Dec 2023 491st amollberg 🇸🇪 695 82 3 Jan 2024 491st mrmena 🇦🇺 695 82 19 Mar 2024 491st rifatx 695 82 16 Jul 2024 491st NicoH76 695 82 24 Apr 2025 491st 0dyse 695 82 29 Apr 2025 491st some-function 695 82 2 Jul 2025 506th bonevbs 687 83 8 May 2022 506th feherd 687 83 20 May 2022 506th pbleich 687 83 24 Aug 2022 506th RoscoeSmith 687 83 20 Nov 2022 506th amadeusdotpng 687 83 22 Apr 2023 506th ross-i 687 83 5 Jul 2023 506th anonymaew 687 83 2 Aug 2023 506th mstang107 687 83 20 Dec 2023 506th LHLaurini 🇧🇷 687 83 26 Jun 2024 506th C0derX3 🇺🇸 687 83 18 Sep 2024 506th ComputerKWasTaken 🇺🇸 687 83 20 Jan 2025 506th Vexxter9 🇳🇱 687 83 4 Feb 2025 506th CodyKlingler 687 83 7 Feb 2025 506th OyuDays 687 83 17 Mar 2025 506th julianreece 687 83 29 Apr 2025 521st Feniske 🇫🇷 679 84 7 Oct 2022 521st Eilonlif 🇮🇱 679 84 29 Mar 2023 521st mhsaul 679 84 11 Apr 2023 521st Phyisis 679 84 30 Apr 2024 521st MaxCastella 🇫🇷 679 84 11 Oct 2024 Prev 451–525 of 774 Next